Robert C. Dunbar: CURRICULUM VITAE

Anders LR Beauchamp JL Dunbar RC et al. Ion cyclotron double resonance. J Chem Phys 1966; 45: 1062.

Dunbar RC . Energy dependence of ion-molecule reactions. J Chem Phys 1967; 47: 5445.

Dunbar RC . Ion-molecule chemistry of diborane by ion cyclotron resonance. J Am Chem Soc 1968; 90: 5676–5682.

Beauchamp JL Dunbar RC . Identification of C₂H₅O⁺ structural isomers by ion cyclotron resonance. J Am Chem Soc 1970; 92: 1477–1485.

Dunbar RC . Energy dependence of methanol proton transfer reaction rate. J Chem Phys 1970; 52: 2780.

Dunbar RC . Transient ion cyclotron resonance method for studying ion-molecule collision and charge-transfer rates: N 2 + and CH 4 + . J Chem Phys 1971; 54: 711–719.

Dunbar RC . Positive and negative ions and ion-molecule reactions of several boron hydrides studied by ion cyclotron resonance. J Am Chem Soc 1971; 93: 4167–4172.

Dunbar RC . Photodissociation of the CH₃Cl⁺ and N₂O⁺ cations. J Am Chem Soc 1971; 93: 4354–4358.

McIver RT Dunbar RC . Pulsed ion cyclotron double resonance for the study of ion-molecule reactions. Int J Mass Spectrom Ion Phys 1971; 7: 471–483.

Dunbar RC Shen J Olah GA . Ion-molecule reactions of ethane at low electron energy. J Chem Phys 1972; 56: 3794–3797.

Kramer JM Dunbar RC . A gas-phase photon-induced ion-molecule reaction studied by ion cyclotron resonance spectroscopy. J Am Chem Soc 1972; 94: 4346–4348.

Dunbar RC . Ion-molecule reactions of diborane and oxygen-containing compounds. J Phys Chem 1972; 76: 2467–2469.

Dunbar RC Kramer JM . An ICR study of the angular dependence of photodissociation and the photodissociation transition moment orientation in gaseous CH₃Cl⁺. J Chem Phys 1973; 58: 1266.

Dunbar RC. Photodissociation of toluene parent cations. J Am Chem Soc 1973; 95: 472–476; Additions and corrections – Photodissociation of toluene parent cations. J Am Chem Soc 1973; 95: 6511.

Dymerski PP Dunbar RC . An ICR study of non-reactive collision rate constants. J Chem Phys 1972; 57: 4049–4050.

Dunbar RC Shen J Olah GA . Substituent effects in gas-phase nitration and acetylation of aromatics. J Am Chem Soc 1972; 94: 6862–6864.

Dunbar RC The study of gas-phase ions by ion cyclotron resonance. In: Klopman G (eds). Chemical reactivity and reaction paths, New York, NY: Wiley-Interscience, 1974. .

Kramer JM Dunbar RC . The photodissociation of gaseous olefinic cations. J Chem Phys 1973; 59: 3092–3100.

Dunbar RC Fu E . Photodissociation spectroscopy of gaseous C₇H₈⁺ cations. J Am Chem Soc 1973; 95: 2716–2718.

Dunbar RC Shen J Melby E et al. Gas-phase methylenation of benzene and substituted benzenes by C₂H₅O⁺ ion: A novel electrophilic aromatic substitution. J Am Chem Soc 1973; 95: 7200–7202.

Dunbar RC Ennever JJ Fackler JP Jr . ICR study of ion-molecule reactions of volatile organometallic compounds. Inorg Chem 1973; 12: 2734–2736.

Dunbar RC . Gas-phase photodissociation of alkylbenzene cations. J Am Chem Soc 1973; 95: 6191–6197.

Dunbar RC Bursey MM Chatfield DA . ICR single and double resonance signals for a complex reaction scheme. Int J Mass Spectrom Ion Phys 1974; 13: 195–206.

Dymerski PP Dunbar RC . An integral square-cell flat-cell system for an ion cyclotron resonance spectrometer. Rev Sci Instrum 1974; 45: 124.

Dymerski PP Dunbar RC Dugan JV . ICR study of non-reactive ion-molecule collision rate constants for Cl^- and Cr ( CO ) 5 - . J Chem Phys 1974; 61: 298–305.

Dymerski PP Fu E Dunbar RC . ICR-PDS spectra of substituted benzenes. J Am Chem Soc 1974; 96: 4109–4114.

Dunbar RC Hutchinson BB . Photodecomposition of gas-phase transition metal carbonyl anions. J Am Chem Soc 1974; 96: 3816–3820.

Kramer JM Dunbar RC . Flash photolysis of gas-phase toluene cations. J Chem Phys 1974; 60: 5122–5123.

Dymerski PP Dunbar RC . An integration circuit for photodiode pulse energy measurements. Rev Sci Instrum 1974; 45: 1293.

Shen J Dunbar RC Olah GA . Gas-phase benzyl cations from toluene precursors. J Am Chem Soc 1974; 96: 6227–6229.

Dunbar RC . Infrared radiative decay in complex molecules. Spectrochim Acta 1975; 31: 797–800.

Dunbar RC Photodissociation of gas-phase ions. In: Ausloos P (eds). Ion-molecule interactions, New York, NY: Plenum Press, 1975, pp. 579–593.

Dunbar RC . Nature of the C 7 H 7 + ions from toluene parent ion photodissociation. J Am Chem Soc 1975; 97: 1382–1384.

Riggin MT Dunbar RC . Photodissociation of CH 4 + via ion cyclotron resonance. Chem Phys Lett 1975; 31: 539–542.

Dunbar RC . Photodissociation spectra and the assignment of low-lying states in butadiene and toluene cations. Chem Phys Lett 1975; 32: 508–512.

Fu E Dymerski PP Dunbar RC . Photodissociation and high-resolution laser photodissociation of halogen substituted toluene cations. J Am Chem Soc 1976; 98: 337–342.

Dunbar RC . Identification of characteristic chromophores in gas-phase ions by photodissociation spectroscopy. Anal Chem 1976; 48: 723–726.

Riggin MT Orth R Dunbar RC . Photodissociation of C 4 H 8 + ions: Comparison of experimental branching ratios with unimolecular decomposition theory. J Chem Phys 1976; 65: 3365–3371.

Orth RG Dunbar RC . Photodissociation of nitrous oxide cations. J Chem Phys 1977; 66: 1616–1620.

Dunbar RC . Laser photodissociation spectrum of gas-phase 1,3,5-hexatriene radical cation. J Am Chem Soc 1976; 98: 4671–4672.

Dunbar RC Klein R . Photodissociation spectroscopy of methylnaphthalene cations and the state assignment of naphthalene ions. J Am Chem Soc 1976; 98: 7994–7999.

Orth R Dunbar RC Riggin M . Measurements of the angular distribution and energy of ionic fragments from photodissociation of molecular ions. Chem Phys 1977; 19: 279–288.

Hemberger PH Dunbar RC . Gas-phase formation of ionic sandwich complexes of iron. Inorg Chem 1977; 16: 1246–1247.

Dunbar RC Armentrout PB . Laser photodissociation of ions in a bendix time of flight mass spectrometer. Int J Mass Spectrom Ion Phys 1977; 24: 465–468.

Dunbar RC Klein R . Spectroscopy of radical cations: The McLafferty rearrangement product in fragmentation of n-butylbenzene and 2-phenylethanol ions. J Am Chem Soc 1977; 99: 3744–3746.

Serianz A Shelton JR Urbach FL et al. Two ESR systems for the advanced undergraduate lab. J Chem Ed 1976; 53: 394–395.

Dunbar RC Analytical aspects of ion cyclotron resonance. In: Kuwana T (eds). Physical methods of modern chemical analysis 1980; Vol. 2New York, NY: Academic Press, pp. 277–335. .

Dunbar RC Fu EW . Ion photodissociation in the two-photon region: Spectroscopy and collisional quenching of bromobenzene cations. J Phys Chem 1977; 81: 1531–1536.

Dunbar RC Fu EW Olah GA . Gas-phase spectroscopy of protonated hexamethylbenzene and hexamethyl (dewar benzene). J Am Chem Soc 1977; 99: 7502–7503.

Orth RG Dunbar RC . Photofragmentation of CH₃Cl⁺ at 366 nm. J Chem Phys 1978; 68: 3254–3259.

Dunbar RC . Substituent effects in benzene cation spectroscopy: I. Perturbation theory. J Chem Phys 1978; 68: 3125–3132.

Teng HH Dunbar RC . Substituent effects in benzene cation spectroscopy: II. Photodissociation spectra of methylbenzene ions. J Chem Phys 1978; 68: 3133–3138.

Dunbar RC Teng HH . Photodissociation spectroscopy of hexatriene cations. J Am Chem Soc 1978; 100: 2279–2283.

Fu EW Dunbar RC . Photodissociation spectroscopy and structural rearrangements in ions of cyclooctatetraene, styrene, and related molecules. J Am Chem Soc 1978; 100: 2283–2288.

Orth RG Dunbar RC . Structure of reactively produced chloropropene cations by laser photodissociation. J Am Chem Soc 1978; 100: 5949–5951.

Dunbar RC . On the coupling of ion cyclotron motion to ion internal degrees of freedom. Int J Mass Spectrom Ion Phys 1979; 29: 77–84.

Kim MS Dunbar RC . Study of collisional relaxation of ions by two-photon photodissociation. Chem Phys Lett 1979; 60: 247–250.

Kim MS and Dunbar RC. Multiphoton photodissociation of naphthalene cations. J Photochem 1978; 9: 142 (Abstract of preliminary report); J Chem Phys 1980; 72: 4405−4411.

Dunbar RC Ion photodissociation. In: Bowers MT (eds). Gas phase ion chemistry 1979; Vol. IINew York, NY: Academic Press, pp. 182–220. .

Benz RC Dunbar RC . Photodissociation spectroscopy of alkane radical cations. J Am Chem Soc 1979; 101: 6363–6366.

Dunbar RC . On the photodissociation spectroscopy of alkylbenzene cations. J Phys Chem 1979; 83: 2376–2378.

Dunbar RC Teng HH Fu EW . Photodissociation spectroscopy of halogen-substituted benzene ions. J Am Chem Soc 1979; 101: 6506–6510.

Kim MS Dunbar RC McLafferty FW . Fragmentation of butyrophenone ions. J Am Chem Soc 1978; 100: 4600–4601.

Dunbar RC Kim MS Olah GA . Rearrangement among gas-phase ions of C₈H₈ isomers. A photodissociation spectroscopic investigation. J Am Chem Soc 1979; 101: 1368–1370.

Orth RG Dunbar RC . Photofragmentation of OCS⁺ and CS 2 + . Chem Phys 1980; 45: 195–201.

Dunbar RC. Ion photodissociation. In: Ausloos PJ (ed.) Kinetics of ion-molecule reactions. NATO Sci Series: B 1979; 40: 463−485.

Takenoshita Y Dunbar RC . Photodissociation spectroscopy and photoreactions in t-butylbenzene cation and its daughter cations. Bull Chem Soc Jpn 1980; 53: 2185–2187.

Dunbar RC Hays JD Honovich J et al. Two-laser multiphoton dissociation of iodobenzene cation. J Am Chem Soc 1980; 102: 3950–3951.

Dunbar RC Turner DW . Ionic and neutral optical emission induced by He(Iα) excitation of nitriles. J Chem Soc Faraday II, Mol Chem Phys 1980; 76: 1079–1083.

Hays JD Dunbar RC . Photodissociation study of the electrocyclic interconversion of 1,3-cyclohexadiene and 1,3,5-hexatriene radical cations. J Phys Chem 1979; 83: 3183–3184.

Benz RC Claspy PC Dunbar RC . Photodissociation spectroscopy of hexadiene radical ions: Structural rearrangements in the gas-phase ions. J Am Chem Soc 1981; 103: 1799–1802.

Honovich JP Dunbar RC . Photodissociation spectroscopy of gas-phase protonated acrolein derivatives. J Phys Chem 1981; 85: 1558–1562.

Dunbar RC. Interaction of electromagnetic radiation with gas-phase ions. In: Johnstone RAW (ed.) Mass spectrometry, Vol. 6. Specialist Periodical Reports. London, England: The Royal Society, 1981, p.100.

Dunbar RC . Deriving the Maxwell distribution. J Chem Ed 1982; 59: 22.

Dunbar RC Turner DW . Wavelength-resolved fluorescence lifetimes of gas-phase ions: CO 2 + and CS 2 + . Chem Phys 1981; 57: 377–383.

Lev NB Dunbar RC . Pulsed vs. continuous laser multiphoton dissociation of iodobenzene cations. Chem Phys Lett 1981; 84: 483–486.

Honovich JP Dunbar RC . Structure of benzyl chloride parent ions: An unusual bimolecular isomerization process. Int J Mass Spectrom Ion Phys 1982; 42: 33–42.

Dunbar RC. Topics in ion photodissociation. In: Hartmann H and Wanczek KP (eds) Lecture notes in chemistry: ion cyclotron resonance spectrometry II. Berlin, Heidelberg, Germany: Springer Verlag, 1982, pp.1–26.

Orth RG Dunbar RC . Photodissociation of isomeric chloropropene cations and the structure of reactively produced chloropropene ions. J Am Chem Soc 1982; 104: 5617–5621.

Dunbar RC Honovich JP . Threshold ion photodissociation: Bromobenzene and iodobenzene ions. Int J Mass Spectrom Ion Processes 1984; 58: 25–41.

Honovich JP Dunbar RC . Vibrational spectroscopy and photodissociation properties of ions as determined by two-laser photodissociation techniques. J Phys Chem 1983; 87: 3755–3758.

Lev NB Dunbar RC . Infrared-enhanced multiphoton dissociation of iodobenzene cations. Chem Phys 1983; 80: 367–378.

Honovich JP Dunbar RC . Radiative lifetime of vibrationally excited iodo-and bromobenzene ions by two-laser photodissociation spectroscopy. J Am Chem Soc 1982; 104: 6220–6224.

Lev NB Dunbar RC . Collisional relaxation of iodobenzene ions. J Phys Chem 1983; 87: 1924–1928.

Dunbar RC . Pulse-rate effects in the photochemistry of gas-phase bromobenzene ions: A study of ion relaxation mechanisms. J Phys Chem 1983; 87: 3105–3108.

Dunbar RC . What are the slowest metastable ion decompositions. Int J Mass Spectrom Ion Proc 1983; 54: 109–118.

Dunbar RC. Photodissociation in the ICR ion trap. In: Bowers MT (ed.) Gas phase ion chemistry. Vol. 3. Academic Press, 1984, pp.130−166.

Dunbar RC. Photofragmentation of molecular ions. In: Miller TA and Bondybey VE Molecular ions: Spectroscopy, structure, and chemistry. New York, NY: North Holland, 1983..

Dunbar RC Chen J-H . Two-pulse photodissociation measurement of infrared-fluorescence relaxation in bromobenzene ion. J Phys Chem 1984; 88: 1401–1404.

Dunbar RC . The effect of ion position on ICR signal strength. Int J Mass Spectrom Ion Processes 1984; 56: 1–9.

Dunbar RC Chen JH Hays JD . Magnetron motion of ions in the cubical ICR cell. Int J Mass Spectrom Ion Processes 1984; 57: 39–56.

Hays JD Dunbar RC . An array-processor based Fourier-transform ion cyclotron resonance mass spectrometer. Rev Sci Instrum 1984; 55: 1116–1119.

Dunbar RC Ion cyclotron resonance and Fourier-transform mass spectrometry. In: Bernasconi CF (eds). Investigation of rates and mechanisms of reactions, New York, NY: Wiley, 1986, pp. 903–950. .

Chen JH Hays JD Dunbar RC . Competitive two-channel photodissociation of n-butylbenzene ions in the Fourier-transform ICR mass spectrometer. J Phys Chem 1984; 88: 4759–4764.

Dunbar RC . Collisional quenching of iodobenzene ion one-photon photofragmentation. Chem Phys Lett 1985; 115: 349–352.

Honovich JP Dunbar RC Lehman T . Laser studies of energy relaxation in gas-phase ion photodissociation. J Phys Chem 1985; 89: 2513–2517.

Honovich JP Segall J Dunbar RC . Fragmentation thermochemistry of gas-phase ions by threshold photodissociation and charge-exchange ionization. Methylnaphthalene and methylstyrene ions. J Phys Chem 1985; 89: 3617–3622.

Dunbar RC Fitzgerald GB Hays JD . Photodissociation spectroscopic observation of some hydrocarbon ion rearrangements. Int J Mass Spectrom Ion Processes 1985; 66: 313–326.

Dunbar RC Ferrara J . Collisional quenching of photoexcited iodobenzene ions: Effect of collision-partner size and deuteration. J Chem Phys 1985; 83: 6229–6233.

Dunbar RC. Gas-phase photodissociation. In: Almoster-Ferreira MA (ed.) Ionic processes in the gas phase. NATO ASI Series, Ser. C, H8, 1984, pp.179–203. Dordrecht, The Netherlands.

Dunbar RC . Collisionless relaxation of photoexcited benzene ions. Chem Phys Lett 1986; 125: 543–546.

Chen JH Dunbar RC . Fragmentation of n-heptane ions by photodissociation. Int J Mass Spectrom Ion Processes 1986; 72: 115–123.

Chen JH Dunbar RC . Photodissociation of 1,4-dioxane ions: Competitive formation of two fragment ions. Int J Mass Spectrom Ion Processes 1987; 76: 1–10.

Dunbar RC Chen JH So HY et al. Infrared fluorescence relaxation of photoexcited gas phase ions by chopped-laser two-photon dissociation. J Chem Phys 1987; 86: 2081–2086.

Coggiola MJ Cosby PC Helm H et al. One-photon IR photodissociation of polyatomic ions in a fast beam. J Phys Chem 1987; 91: 2794–2800.

Asamoto B Dunbar RC . Observation of the infrared radiative relaxation of iodobenzene ions using two-light-pulse photodissociation. J Phys Chem 1987; 91: 2804–2807.

Ahmed MS Dunbar RC . Collisional relaxation of photoexcited bromobenzene ions by various neutral partners. J Am Chem Soc 1987; 109: 3215–3219.

Dunbar RC . Time-resolved photodissociation of chlorobenzene ion in the ICR spectrometer. J Phys Chem 1987; 91: 2801–2804.

Asamoto B Dunbar RC . Internal energy effects in photodissociation: Relaxation of excited thiophenol ions formed by electron impact ionization. Chem Phys Lett 1987; 139: 225–231.

Dunbar RC. Laser photodissociation techniques for studying ion spectroscopy and structure. Analytical Instrumentation 1988; 17: 113–130.

Dunbar RC Photodissociation of metal-containing gas-phase ions. In: Russell DH (eds). Gas phase inorganic chemistry, New York, NY: Plenum, 1989, pp. 323–352.

Dunbar RC So HY . Photodissociation of conjugated diene radical cations: Methyl substituent band shifts. J Am Chem Soc 1988; 110: 2726–2730.

So HY Dunbar RC . Time-resolved slow dissociation of benzonitrile ions by trapped-ion ICR photodissociation. J Am Chem Soc 1988; 110: 3080–3083.

Dunbar RC Honovich JP Asamoto B . Photodissociation thermochemistry as a probe of halotoluene ion potential surfaces. J Phys Chem 1988; 92: 6935–6939.

Asamoto B Dunbar RC . Photodissociation spectroscopy of several C 5 H 6 + isomeric ions. Int J Mass Spectrom Ion Processes 1988; 86: 387–400.

Ahmed MS So HY Dunbar RC . Infrared radiative relaxation of benzene ion. ICR photodissociation study of the deuterium isotope effect. Chem Phys Lett 1988; 151: 128–132.

Ahmed MS Dunbar RC . Chopped-laser two-photon photodissociation measurement of collisional relaxation in benzene ion. J Chem Phys 1988; 89: 4829–4832.

Dunbar RC . Time-resolved unimolecular dissociation of styrene ion: Rates and activation parameters. J Am Chem Soc 1989; 111: 5572–5576.

Dunbar RC Weddle GH . Ion cyclotron resonance time-of-flight spectroscopy. Kinetic energy of p-iodotoluene photodissociation fragment ions. J Phys Chem 1988; 92: 5706–5709.

So HY Dunbar RC . Photodissociation of gas-phase halogenated benzene radical cations. J Chem Phys 1989; 90: 2192–2200.

Huang FS Dunbar RC . Gas-phase ion thermometry: internal energy and cooling processes in dioxane ion measured using competitive photodissociation. J Am Chem Soc 1989; 111: 6497–6500.

Dunbar RC . Infrared radiative cooling of isolated polyatomic molecules. J Chem Phys 1989; 90: 7369–7375.

Dunbar RC . The influence of electron motions on each other in a molecule: Correlation of electron motions in H₂. J Chem Ed 1989; 66: 463–466.

Faulk JD Dunbar RC . ICR ion trap measurements of energy relaxation in gas-phase ions: Three techniques compared for thiophenol ion. J Phys Chem 1989; 93: 7785–7789.

Faulk JD Dunbar RC . Photodissociation spectroscopy of gas-phase 2-methyl-l-penten-3-yne radical cation. J Phys Chem 1990; 94: 2324–2327.

Dunbar RC . Time-resolved photodissociation study of relaxation processes in gas-phase styrene ion. J Chem Phys 1989; 91: 6080–6085.

Uechi GT Dunbar RC . Radiative relaxation rate determination by competitive photodissociation of n-butylbenzene ion. J Chem Phys 1990; 93: 1626–1631.

Dunbar RC . Kinetic parameters for the unimolecular dissociation of styrene ion. J Phys Chem 1990; 94: 3283–3286.

Snodgrass JT Dunbar RC Bowers MT . Photodissociation of the benzene dimer cation in the gas phase. J Phys Chem 1990; 94: 3648–3651.

Dunbar RC . Treatment of noise in magnitude-mode FT-ICR spectra. Appl Spectrosc 1990; 44: 1547–1551.

Faulk JD Dunbar RC Lifshitz C . Slow dissociations of thiophenol molecular ion study by TRPD and TPIMS. J Am Chem Soc 1990; 112: 7893–7899.

Dunbar RC Lifshitz C . Slow time-resolved photodissociation of p-iodotoluene ion. J Chem Phys 1991; 94: 3542–3547.

Huang FS Dunbar RC . Time-resolved photodissociation of methylnaphthalene ion. An illustration of kinetic shifts in large-ion dissociations. J Am Chem Soc 1990; 112: 8167–8169.

Faulk JD Dunbar RC . Photodissociation spectroscopy of gas-phase ferrocene cation. J Am Soc Mass Spectrom 1991; 2: 97–102.

Lifshitz C Levin I Kababia S et al. Time-dependent mass spectra and breakdown graphs. 14. Iodotoluene isomers. J Phys Chem 1991; 95: 1667–1671.

Dunbar RC . Polyatomic ion-molecule radiative association. Theoretical framework and predictions: observations of NO⁺ + C₆H₅CN as an example. Int J Mass Spectrom Ion Processes 1990; 100: 423–443.

Dunbar RC Solooki D Tessier CA et al. Gas-phase synthesis of metallocyclotriynes. Organometallics 1991; 10: 52–54.

Dunbar RC FT-ICR: History and general introduction. In: Asamoto B (eds). Analytical applications of FT-ICR mass spectrometry, New York, NY: VCH, 1991, pp. 1–28.

Dunbar RC and Asamoto B. Instrumentation. In: Asamoto B (ed.) Analytical applications of FT-ICR mass spectrometry. New York, NY: VCH, 1991, pp.29–48.

Dunbar RC . Kinetics of low-intensity infrared laser photodissociation. The thermal model and applications of the Tolman theorem. J Chem Phys 1991; 95: 2537–2548.

Huang FS Dunbar RC . Time-resolved photodissociation of toluene ion. Int J Mass Spectrom Ion Processes 1991; 109: 151–170.

Faulk JD Dunbar RC . Time-resolved photodissociation of three tert-butylbenzene ions. J Phys Chem 1991; 95: 6932–6936.

Uechi GT Dunbar RC . The kinetics of infrared laser photodissociation of n-butylbenzene ions at low pressure. J Chem Phys 1992; 96: 8897–8905.

Herbst E Dunbar RC . A global view of radiative association as a function of product size: Interstellar implications. Mon Not R Astronom Soc 1991; 253: 341–349.

Huang FS Dunbar RC . The breakdown pattern of n-heptane ion by photodissociation: An excellent thermometric ion. Int J Mass Spectrom Ion Processes 1992; 112: 101–109.

Dunbar RC. Radiative association workshop. In: Jennings KR (ed.) Fundamentals of gas-phase ion chemistry. NATO ASI Series, Ser. C, 347, Dordrecht: Kluwer, 1991, pp.209–218; Uechi GT and Dunbar RC. IR radiative relaxation of n-butylbenzene ions. ibid.

Uechi GT Dunbar RC . Space charge effects on relative peak heights in FT-ICR spectra. J Am Soc Mass Spectrom 1992; 3: 734–741.

Dunbar RC Zaniewski RC . Infrared multiphoton dissociation of styrene ions by low-power continuous CO₂ laser irradiation. J Chem Phys 1992; 96: 5069–5075.

Dunbar RC . Infrared radiative cooling of gas-phase ions. Mass Spectrom Rev 1992; 11: 309–399.

Klippenstein SJ Faulk JD Dunbar RC . A combined theoretical and experimental study of the dissociation of benzene cation. J Chem Phys 1993; 98: 243–256.

Faulk JD Dunbar RC . Time-resolved photodissociation of gas-phase ferrocene cation: Energetics of fragmentation and radiative rate at near-thermal energies. J Am Chem Soc 1992; 114: 8596–8600.

van de Guchte WJ van der Hart WJ de Koning LJ et al. Formation of long-lived benzene ions during charge exchange ionization of 1,5-hexadiyne in an ion cyclotron resonance spectrometer. Int J Mass Spectrom Ion Processes 1993; 123: 11–17.

Uechi GT Dunbar RC . Thermometric study of CO₂ laser heating and radiative cooling of n-butylbenzene ions. J Chem Phys 1993; 98: 7888–7897.

Dunbar RC. Ion-molecule radiative association. In: Ng CY, Baer T and Powis I (eds) Current topics ion chemistry and physics. Vol. II. New York, NY: Wiley, Chapter 5, 1994.

Dunbar RC Huang F-S Klippenstein SJ . The fragmentation pattern of 1,4-dioxane ion. Int J Mass Spectrom Ion Processes 1993; 128: 21–30.

Gotkis Y Naor M Laskin J et al. Time-resolved dissociation of bromonaphthalene ion studied by TPIMS and TRPD. Heat of formation of naphthyl ion. J Am Chem Soc 1993; 115: 7402–7406.

Pozniak B Dunbar RC . Photodissociation and photodetachment of small carbon cluster anions. Int J Mass Spectrom Ion Processes 1994; 133: 97–110.

Dunbar RC Uechi GT Solooki D et al. Reactions of gas-phase atomic metal ions with the macrocyclic ligand tribenzocyclyne. J Am Chem Soc 1993; 1115: 12477–12482.

Pozniak B Dunbar RC . Reactivity of carbon cluster ions with benzene: Fourfold periodicity and possible aromaticity effects. J Am Chem Soc 1994; 116: 4113–4114.

Ho Y-P Dunbar RC . Cooling of tri-t-butylbenzene ions: A TRPD thermometric study. J Phys Chem 1993; 97: 11474–11479.

Dunbar RC Uechi GT Asamoto B . Radiative association reactions of silicon and transition metal cations with the PAH compounds benzene naphthalene and anthracene. J Am Chem Soc 1994; 116: 2466–2470.

Dunbar RC Faulk JD . Radiative and collisional association of mesitylene ion with parent neutral at 196 K. Chem Phys Lett 1993; 214: 5–9.

Lin CY Dunbar RC . Time-resolved photodissociation rates and kinetic modeling for unimolecular dissociation of iodotoluene ions. J Phys Chem 1994; 98: 1369–1375.

Weddle GH Dunbar RC . Efficiencies and size effects in radiative association of NO⁺ with Lewis bases. Int J Mass Spectrom Ion Processes 1994; 134: 73–82.

Dunbar RC . Kinetics of thermal unimolecular dissociation by ambient infrared radiation. J Phys Chem 1994; 98: 8705–8712.

Faulk JD Dunbar RC . Low-temperature association kinetics of CF₂CH_2⁺ with parent neutral. J Phys Chem 1994; 98: 11727–11732.

Weddle GH Dunbar RC Song K et al. Time-resolved photodissociation of the molecular ions of propyl phenyl ethers. J Am Chem Soc 1995; 117: 2573–2580.

Lin CY Dunbar RC . Time-resolved photodissociation of gas phase nickelocene cation: Determination of bond strength and radiative relaxation rate. J Phys Chem 1995; 99: 1754–1759.

Ho Y-P Dunbar RC Lifshitz C . The C-H bond strength of naphthalene ion. Reevaluation of existing information and new TRPD results. J Am Chem Soc 1995; 117: 6504–6508.

Dunbar RC McMahon TB Tholmann D et al. Zero-pressure thermal radiation induced dissociation (ZTRID) of gas-phase cluster ions: comparison of theory and experiment for (H₂O)₂C1⁻ and (H₂O)₃C1⁻. J Am Chem Soc 1995; 117: 12819–12825.

Cheng YW Dunbar RC . Radiative association kinetics of methyl-substituted benzene ions. J PhysChem 1995; 99: 10802–10807.

Dunbar RC Klippenstein SJ Hrusak J et al. Binding energy of A1(C₆H₆)⁺ from kinetic analysis of radiative association data. J Am Chem Soc 1996; 118: 5277–5283.

Dunbar RC New approaches to ion thermochemistry via dissociation and association. In: L. Babcock M Adams NG (eds). Advances in gas phase ion chemistry 1996; Vol. 2Greenwich, CT: JAI Press, pp. 87–124.

Ho Y-P Yang Y-C Klippenstein SJ et al. Infrared spectral properties of naphthalene cation: radiative cooling kinetics experiments and density functional calculations. J Phys Chem 1995; 99: 12115–12124.

Lin C-Y Dunbar RC . Zero-pressure thermal-radiation induced dissociation of tetraethylsilane cation. J Phys Chem 1996; 100: 655–659.

Ryzhov V Klippenstein SJ Dunbar RC . Radiative association of NO⁺ with 3-pentanone: Rate, binding energy and temperature dependence. J Am Chem Soc 1996; 118: 5462–5468.

Klippenstein SJ Yang Y-C Ryzhov V et al. Theory and modeling of ion-molecule radiative association kinetics. J Chem Phys 1996; 104: 4502–4516.

Ho Y-P Dunbar RC . Radiative cooling rate of 9-cyanophenanthrene ions by time-resolved photodissociation thermometry. Int J Mass Spectrom Ion Processes 1996; 154: 133–144.

Pozniak BP Dunbar RC . Reactivity patterns of carbon cluster cations with nitrogen-containing molecules. J Am Chem Soc 1997; 119: 7343–7349.

Dunbar RC . Modeling radiative association kinetics. Int J Mass Spectrom Ion Processes 1997; 160: 1–16.

Lin C-Y Dunbar RC Haynes CL et al. Dissociation thermochemistry of tetramethylsilane ion. Comparative determination by thermal dissociation and threshold collisional dissociation. J Phys Chem 1996; 100: 19659–19665.

Ho Y-P Yang Y-C Klippenstein SJ et al. Binding energies of Ag⁺ and Cd⁺ complexes from analysis of radiative association kinetics. J Phys Chem 1997; 101: 3338–3347.

Lin Y-C Dunbar RC . Radiative association kinetics and binding energies of chromium ions with benzene and benzene derivatives. Organometallics 1997; 16: 2691–2697.

Pozniak BP Dunbar RC . Monomer and dimer complexes of coronene with atomic ions. J Am Chem Soc 1997; 119: 10439–10445.

Ryzhov V Dunbar RC . Size dependence of radiative association rates. Int J Mass Spectrom Ion Processes 1997; 167/168: 627–635.

Pozniak BP Dunbar RC . Photodissociation studies of C n + at 193 nm (n = 5-19). Int J Mass Spectrom Ion Processes 1997; 165/166: 299–314.

Dunbar RC McMahon TB . Activation of unimolecular reactions by ambient black-body radiation. Science 1997; 279: 194–197. (Invited review).

Anderson C Hrabovsky S McKinley Y et al. Phthalocyanine photodynamic therapy: Disparate effects of pharmacologic inhibitors on cutaneous photosensitivity and on tumor regression. Photochem Photobiol 1997; 65: 895–901.

Dunbar RC . Binding of Na⁺, Mg⁺ and A1⁺ to the Pi faces of naphthalene and indole: An ab initio mapping study. J Phys Chem A 1998; 102: 8946–8952.

Ryzhov V Yang C-N Klippenstein SJ et al. Binding energies of chromium cations with fluorobenzenes from radiative association kinetics. Int J Mass Spectrom 1999; 185/186/187: 913–923.

Ryzhov V Yang Y-C Klippenstein SJ et al. Temperature dependence of radiative association rates. J Phys Chem A 1998; 102: 8865–8870.

Ho Y-P Dunbar RC . Reactions of Au⁺ and Au^- with benzene and fluorine-substituted benzenes. Int J Mass Spectrom Ion Processes 1999; 182/183: 175–184.

Ryzhov V Dunbar RC . Interactions of phenol and indole with metal ions in the gas phase: Models for Tyr and Trp side-chain binding. J Am Chem Soc 1999; 121: 2259–2268.

Ryzhov V Dunbar RC . Direct associative equilibrium in the FT-ICR ion trap: The hydration equilibrium of protonated 18-Crown-6. J Am Soc Mass Spectrom 1999; 10: 862–868.

Gapeev A Yang C-N Klippenstein SJ et al. Binding energies of gas-phase metal ions with pyrrole: Experimental and quantum chemical results. J Phys Chem A 2000; 104: 3246–3256.

Petrie S Dunbar RC . Radiative association reactions of Na⁺, Mg⁺ and Al⁺ with abundant interstellar molecules. Variational transition state calculations. J Phys Chem A 2000; 104: 4480–4488.

Gapeev A Dunbar RC . Binding of alkaline earth halide ions to benzene and mesitylene. J Phys Chem A 2000; 104: 4084–4088.

Ryzhov V Dunbar RC Cerda B et al. Cation-π effects in the complexation of Na⁺ and K⁺ with Phe, Tyr, and Trp in the gas phase. J Am Soc Mass Spectrom 2000; 11: 1037–1046.

Dunbar RC . Complexation of Na⁺ and K⁺ to aromatic amino acids: A density functional computational study of cation-π interactions. J Phys Chem A 2000; 104: 8067–8074.

Dunbar RC . Photodissociation of trapped ions. Int J Mass Spectrom 2000; 200: 571–589.

Gapeev A Dunbar RC . Cation-Pi interactions and the gas-phase thermochemistry of the Na⁺/phenylalanine complex. J Am Chem Soc 2001; 123: 8360–8365.

Dunbar RC Petrie S . Interstellar and circumstellar reaction kinetics of Na⁺, Mg⁺ and Al⁺ with cyanopolyynes and polyynes. Astrophys J 2002; 564: 792–802.

Dunbar RC . Metal cation binding to phenol: DFT comparison of the competing sites. J Phys Chem A 2002; 106: 7328–7337.

Dunbar RC . Binding of transition metal ions to curved Pi surfaces: Corannulene vs. coronene. J Phys Chem A 2002; 106: 9809–9819.

Gapeev A Dunbar RC . Reactivity and binding energies of transition metal halide ions with benzene. J Am Soc Mass Spectrom 2002; 13: 477–484.

Stevens SM Jr. Dunbar RC Price WD et al. Blackbody infrared radiative dissociation of partially solvated tris(2,2′-bipyridine)ruthenium(II) complex ions. J Phys Chem A 2002; 106: 9686–9694.

Dunbar RC. Radiative association kinetics: ion-ligand binding thermochemistry. In: Gross ML and Caprioli R (eds) Encyclopedia of mass spectrometry. Vol. 1.; Armentrout PB (ed.) Chemistry and physics of gas-phase ions. Oxford: Elsevier, 2003, pp.362−370.

Dunbar RC. Photodissociation studies of ion thermochemistry. In: Gross ML and Caprioli R (eds) Encyclopedia of mass spectrometry. vol. 1; Armentrout PB (ed.) Chemistry and physics of gas-phase ions. Oxford: Elsevier, 2003; pp.403–416.

Dunbar RC. Photodissociation spectroscopy. In: Gross ML and Caprioli R (eds) Encyclopedia of mass spectrometry. Vol. 1; Armentrout PB (ed.) Chemistry and physics of gas-phase ions. Oxford: Elsevier, 2003, pp.249–261.

Dunbar RC. Black-body infrared radiative dissociation: BIRD. In: Gross ML and Caprioli R (eds) Encyclopedia of mass spectrometry. Vol. 1; Armentrout PB (ed.) Chemistry and physics of gas-phase ions. Oxford: Elsevier, 2003, pp. 371–380.

Gapeev A Dunbar RC . Na⁺ affinities of gas-phase amino acids by ligand exchange equilibrium. Int J Mass Spectrom 2003; 228: 825–839.

Dunbar RC . BIRD (blackbody infrared radiative dissociation). Mass Spectrom Rev 2004; 23: 127–158.

Oomens J Moore DT von Helden G et al. The site of Cr⁺ attachment to gas-phase aniline from infrared spectroscopy. J Am Chem Soc 2004; 126: 724–725.

Stevens SM Jr Dunbar RC Price WD et al. Blackbody infrared radiative dissociation of partially solvated mixed ligand Ru(II) complex ions. J Phys Chem A 2004; 108: 9892–9900.

Dunbar RC. Photochemistry and spectroscopy of organic ions. In: Gross ML and Caprioli R (eds) Encyclopedia of mass spectrometry. Vol. 4; Nibbering NMM (ed.) Fundamentals of and applications to organic (and organometallic) compounds. Oxford: Elsevier, 2005, pp.337−349.

Turner BE Petrie S Dunbar RC et al. A search for MgNC and AlNC in TMC-1: The status of metals in dark cloud cores. Astrophys J 2005; 621: 817–830.

Grimm RL Mangrum JB Dunbar RC . Complexation of gas-phase metal ions with furan: Experimental and quantum chemical binding energies. J Phys Chem A 2004; 108: 10897–10905.

Dunbar RC Petrie S . Magnesium monocationic complexes: A theoretical study of metal ion binding energies and gas-phase association kinetics. J Phys Chem A 2005; 109: 1411–419.

Moore DT Oomens J Eyler JR et al. Infrared spectroscopy of gas-phase Cr⁺ coordination complexes: Determination of binding sites and electronic states. J Am Chem Soc 2005; 127: 7243–7254.

Dunbar RC Photodissociation of biomolecule ions. In: Lifshitz C Laskin J (eds). Principles of mass spectrometry applied to biomolecules, Hoboken, NJ, USA: Wiley, 2006, pp. 337–377. .

Polfer NC Oomens J Moore DT et al. Infrared spectroscopy of phenylalanine Ag(I) and Zn(II) complexes in the gas phase. J Am Chem Soc 2006; 128: 517–525.

Dunbar RC Moore DT Oomens J . IR-spectroscopic characterization of acetophenone complexes with Fe⁺, Co⁺ and Ni⁺ using free-electron-laser IRMPD. J Phys Chem A 2006; 110: 8316–8326.

Polfer NC Oomens J Dunbar RC . IRMPD spectroscopy of metal-ion/tryptophan complexes. Phys Chem Chem Phys 2006; 8: 2744–2751.

Polfer NC Dunbar RC Oomens J . Observation of zwitterion formation in the gas-phase H/D-exchange with CH₃OD: solution-phase structures in the gas phase. J Am Soc Mass Spectrom 2007; 18: 512–516.

Dunbar RC Moore DT Oomens J . IR spectroscopic characterization of intermediates in a gas-phase ionic reaction: The decarbonylation of Co⁺(acetophenone). Int J Mass Spectrom 2007; 265: 182–186.

Dunbar RC and Petrie S. Main-group metal ion chemistry in cold interstellar and circumstellar environments. In: “Astrochemistry,” AIP proceedings, PacifiChem, Honolulu, 18–20 December 2005, pp.281–288.

Petrie S and Dunbar RC. Main-group metal ion chemistry in planetary atmospheres. In: “Astrochemistry,” AIP proceedings, PacifiChem, Honolulu, 18–20 December 2005, pp.272–280.

Forbes MW Bush MF Polfer NC et al. Infrared spectroscopy of arginine cation complexes: Direct observation of gas-phase zwitterions. J Phys Chem A 2007; 111: 11759–11770.

Dunbar RC Polfer NC Oomens J . Gas-phase zwitterion stabilization by a metal dication. J Am Chem Soc 2007; 129: 14562–14563.

Polfer NC Oomens J Dunbar RC . Alkali metal complexes of the dipeptides PheAla and AlaPhe: IRMPD spectroscopy. Chem Phys Chem 2008; 9: 579–589.

Steill J Zhao J Siu C-K et al. Structure of the observable histidine radical cation in the gas phase: A captodative α-radical ion. Angew Chem Int Ed 2008; 47: 9666–9668.

Dunbar RC Steill J Polfer NC et al. Dimeric complexes of tryptophan with M²⁺ metal ions. J Phys Chem A 2009; 113: 845–851.

Dunbar RC Steill J Polfer NC et al. Gas-phase infrared spectroscopy of the protonated dipeptides H⁺PheAla and H⁺AlaPhe compared to condensed-phase results. Int J Mass Spectrom 2009; 283: 77–84.

Vala M Szczepanski J Dunbar RC et al. Infrared multiphoton dissociation spectrum of isolated protonated 1-azapyrene. Chem Phys Lett 2009; 473: 43–48.

Dunbar RC Hopkinson AC Oomens J et al. Conformation switching in gas-phase complexes of histidine with alkaline earth ions. J Phys Chem B 2009; 113: 10403–10408.

Dunbar RC Steill J Polfer NC et al. Peptide length, steric effects and ion solvation govern zwitterion stabilization in barium-chelated di- and tripeptides. J Phys Chem B 2009; 113: 10552–10554.

Baer T Dunbar RC . Ion spectroscopy: Where did it come from; where is it now; and where is it going?. J Am Soc Mass Spectrom 2010; 21: 681–693.

Dunbar RC Steill JD Oomens J . Conformations and vibrational spectroscopy of metal ion/polylalanine complexes. Int J Mass Spectrom 2010; 297: 107–115. (Special issue on Ion Spectroscopy).

Mino WK Jr. Sczcepanski J Pearson WL et al. Vibrational signatures of zwitterionic and charge solvated structures for alkaline earth-tryptophan dimer complexes in the gas phase. Int J Mass Spectrom 2010; 297: 131–138. (Special Issue on Ion Spectroscopy).

Dunbar RC Steill JD Oomens J . Cationized phenylalanine conformations characterized by IRMPD and computation for singly and doubly charged ions. Phys Chem Chem Phys 2010; 12: 13383–13393.

Dunbar RC Steill JD and Oomens J . Chirality-induced conformational preferences in peptide metal-ion binding revealed by IR spectroscopy. J Am Chem Soc 2011; 133: 1212–1215.

Green JR Dunbar RC . When do molecular bowls encapsulate metal cations?. J Phys Chem A 2011; 115: 4968–4975.

Dunbar RC Steill JD Oomens J . Encapsulation of metal cations by the PhePhe ligand: A cation-π cage. J Am Chem Soc 2011; 133: 9376–9386.

Dunbar RC Oomens J Orlova G et al. IRMPD spectroscopic investigation of gas-phase complexes of deprotonated penicillin G with Ba²⁺, Zn²⁺ and Cd²⁺. Int J Mass Spectrom 2011; 308: 330–337.

Dunbar RC, Steill JD, Polfer NC, et al. Peptide bond tautomerization induced by divalent metal ions: Emergence of the iminol configuration. Angew Chem Int Ed 2012; 51:, 4591−4593; Angew Chem 2012; 124: 4669−4671.

Dunbar RC Polfer NC Berden G et al. Metal ion binding to peptides: Oxygen or nitrogen sites?. Int J Mass Spectrom 2012; 330-332: 71–77.

Dunbar RC Steill JD Polfer NC et al. Metal cation binding to gas-phase pentaalanine: Divalent ions restructure the complex. J Phys Chem A 2013; 117: 1094–1101.

Dunbar RC Oomens J Berden G et al. Metal ion complexes with HisGly: Comparison with PhePhe and PheGly. J Phys Chem A 2013; 117: 5335–5343.

Dunbar RC Berden G Oomens J . How does a small peptide choose how to bind a metal ion? IRMPD and computational survey of CS versus iminol binding preferences. Int J Mass Spectrom 2013; 354/355: 356–364.

Dunbar RC Spectroscopy of metal-ion complexes with peptide-related ligands. In: Rijs A Oomens J (eds). Gas-phase IR spectroscopy and structure of biological molecules, Switzerland, 2015.

Dunbar RC Berden G Martens J et al. Divalent metal-ion complexes with dipeptide ligands having Phe and his side-chain anchors: Effects of sequence, metal ion, and anchor. J Phys Chem A 2015; 119: 9901–9909.

Dunbar RC . In the beginning was H 2 + : Mass spectrometry and the molecular spectroscopy of gas-phase ions. Int J Mass Spectrom 2015; 377: 159–171.

Dunbar RC Martens J Berden G et al. Complexes of Ni(II) and Cu(II) with small peptides: Deciding whether to deprotonate. Phys Chem Chem Phys 2016; 18: 26923–26932.

Peckelsen K Martens J Berden G et al. Gas-phase complexes of Ni²⁺ and Ca²⁺ with deprotonated histidylhistidine (HisHis): A model case for polyhistidyl-metal binding motifs. J Mol Spectrosc 2017; 332: 38–44.

Dunbar RC Martens J Berden G et al. Water microsolvation can switch the binding mode of Ni(II) with small peptides. J Phys Chem Lett 2017; 8: 2634–2638.

Dunbar RC Martens J Berden G et al. Transition metal(II) complexes of histidine-containing tripeptides: structures and infrared spectroscopy by IRMPD. Int J Mass Spectrom 2018; 429: 198–205.

Dunbar RC Martens J Berden G et al. Binding of divalent metal ions with deprotonated peptides: Do gas-phase anions parallel the condensed phase?. J Phys Chem A 2018; 122: 5589–5596.

Halim MA Clavier C Dagany X et al. Infrared laser dissociation of single megadalton polymer ions in a gated electrostatic ion trap: The added value of statistical analysis of individual events. Phys Chem Chem Phys 2018; 20: 11959–11966.