Steric and Stereoelectronic Effects in Aza Crown Ether Complexes[1]
作者:Vitally P. Solov'ev、Nadezhda N. Strakhova、Vladimir P. Kazachenko、Alexandr F. Solotnov、Vladimir E. Baulin、Oleg A. Raevsky、Volker Rüdiger、Frank Eblinger、Hans-Jörg Schneider
oxygen atoms. Replacement of the hydrogen by alkyl groups forces the lone pairs to an equatorial position, thus enabling better complex formation, as borne out by experiment. In line with these arguments the lgK differences are with some exceptions more due to ΔH than to TΔS differences. The calorimetric data show linear isoequilibrium correlationsbetween TΔS and ΔH, with slopes between those observed