Consequences of proton‐transfer reactions in guanidine in the solid state, solution and gas phase are discussed. Y‐delocalization, resonance and symmetry strongly influence the basicity of guanidine in the gas phase. These effects are, however, insufficient to explain the basicity of guanidine which in aqueous solution is stronger than that of trisubstituted alkylamines and proton sponge (DMAN). The intrinsic (gas‐phase) basicity of guanidine is close to that of triethylamine. The large difference between the basicities of amines and guanidine in solution is attributed to the important role played by effects such as polarizability and internal and external solvation. Copyright © 2003 John Wiley & Sons, Ltd.

No abstract

Physical chemistry Physical chemistry Z 0225Consequences of Proton Transfer in Guanidine -[185 refs.]. -(RACZYNSKA, E. D.; CYRANSKI, M. K.; GUTOWSKI, M.; RAK, J.; GAL, J.-F.; MARIA, P.-C.; DAROWSKA, M.; DUCZMAL, K.; J. Phys. Org. Chem. 16 (2003) 2, 91-106; Inst. Chem., Agric. Univ., PL-02-776 Wroclaw, Pol.; Eng.) -Lindner 29-269

No abstract

No abstract