Free accessResearch articleFirst published online 1999-2
Comparison of Thermodynamic Hydrogen Bonding,Brönsted and Gas-phase Basicity with Spectroscopic Hydrogen Bonding Basicity of N 1,N 1 -Dimethylformamidines. Similarities and Differences in Substituent Effects †
Comparison of the thermodynamic (logKHB with 4-fluorophenol in CCI4, pKa in azeotropic ethanol and GB in the gas phase) with spectroscopic basicities (ΔvOH of methanol in CCI4) for N1, N1-dimethylformamidines shows good correlation only between the pKa and ΔVOH values; no general simple linear model can be applied to the logKHB/ΔvOH and GB/ΔVOH relations.
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