A series of proton transfer reactions monitored in a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer allows the determination of the gas-phase basicity (GB) and the proton affinity (PA) of formaldehyde. The values determined by the thermokinetic method, GB(CH2O) = 681.5 ± 0.7 kJ mol−1 and PA(CH2O) = 711.5 ± 2.1 kJ mol−1 are in excellent agreement with data originating from proton transfer equilibrium constant determinations or from G2 calculations.
BouchouxG.SalpinJ-Y.LeblancD., Int. J. Mass Spectrom. Ion Processes153, 37 (1996).
3.
KofelP.AllemanM.KelerhalsH.P.WanczekK.P., Int. J. Mass Spectrom. Ion Processes65, 97 (1985).
4.
WolfJ.F.StaleyR.H.KoppelI.TaageperaM.McIverR.T.JrBeauchampJ.L.TaftR.W., J. Am. Chem. Soc.99, 5417 (1977).
5.
FreemanC.G.HarlandP.W.McEwanM.J., Int. J. Mass Spectrom. Ion Phys.28, 19 (1978).
6.
TanakaK.MackayG.I.BöhmeD.K., Can. J. Chem.56, 193 (1978).
7.
HunterE.P.L.LiasS.G., J. Phys. Chem. Ref. Data27, 413 (1998).
8.
EastA.L.L.SmithB.J.RadomL., J. Am. Chem. Soc.119, 9014 (1997). (Note that most of the entropy difference is accounted for by the rotational contribution to entropy, ΔS°rot = −8.5 J.mol−1.K−1.)
9.
TraegerJ.C.HolmesJ.L., J. Phys. Chem.97, 3453 (1993).
10.
LiasS.G.BartmessJ.E.LiebmanJ.F.HolmesJ.L.LevinR.D.MallardW.G., J. Phys. Chem. Ref. Data17, Suppl. 1 (1988).
11.
BouchouxG.SalpinJ-Y., Rapid Commun. Mass Spectrom.13, 932 (1999).
12.
SuT.BowersM.T., in Gas Phase Ion Chemistry, Vol.1, Ed by BowersM.T., Academic Press, New York (1979).
13.
SuT.ChesnavichW., J. Chem. Phys.76, 5183 (1982).
14.
McClellanA.C.FreemanW.H., Table of Experimental Dipole Moment, Vol. 1. Freeman, San Fransisco (1963); Vol. 2, Rahara Enterprises, El Cerrito, CA (1973).
