CONDUCTOMETRIC AND THERMAL STUDIES OF FUSED ZN(II) SALTS CONTAINING METHYL-SUBSTITUTED PYRIDINIUM CATIONS

Alkyl-substituted pyridinium salts each possessing a bulky polyatomic zincate ion have been synthesized with the objective of measuring thei r electrical conductivity and investigating their thermal stability. T he influence of hydrogen bonding and methyl substituent(s) located at different positions in the aromatic fragment in the molecule on the st ructure-conductivity relationship has been studied. It has been experi mentally verified that the mechanism by which the protonic conductivit y is enhanced or diminished depends to a certain degree on steric fact ors, i.e. the proximity of the large orthochlorozincate ion and methyl substituents.