Conductivity of tetraphenylarsonium, tetraphenylphosphonium, triphenyltin and trioctyltin chloride and pertechnetate in nonaqueous solutions

Abstract

Conductivity of tetraphenylarsonium chloride (Ph4AsC1), tetraphenylphosphonium chloride (Ph4PC1), tetraphenylarsonium pertechnetate (Ph4AsTcO4), tetraphenylphosphonium pertechnetate (Ph4PTcO4) , triphenyltin chloride (Ph3SnC1) and trioctyltin chloride (Oct3SnC1) solutions in nitrobenzene and chloroform was studied. On the basis of determined molar conductivity A values at different concentrations of the electrolyte in solution, values of dissociation degree of the electrolyte ~x, molar conductivity at infinite dilution A 0 and dissociation costant K i for compounds of type Ph4(As or P) (C1 or TcO4) were calculated. It was shown that for some of the investigated systems the Kohlrausch's empirical relation applies. In chloroform solutions a parabolic dependence of molar conductivity on electrolyte concentration was observed which testifies that a formation of ion triplets at higher electrolyte concentration can occur.