Nuclear quadrupole resonance investigation of the comparative differences between hexachloro-stannate, -tellurate, and -plumbate resulting from cationic effects
Abstract
N.q.r. frequencies of 14 salts of SnCl62–, TeCl62–, and PbCl62– have been recorded in an effort to observe possible differences in anion distortion which could result from the ‘inert’ pair electrons of TeIV. There is no evidence of stereochemical activity of the TeIV‘inert’ pair as might be indicated by an increase in the number of chlorine resonance frequencies and/or anomalous changes in bond ionicity in any of the compounds studied. PbCl62– appears to be more sensitive to the cation than SnCl62– but the TeCl62– ion is less sensitive. It is concluded that anion sensitivity to the cation is not readily predictable on the basis of the size alone.