Additivity Parameters for Organotin ¹³C Chemical Shifts

Abstract

Twenty-four four-coordinate organotin derivatives have been examined by 13C n.m.r. and a set of 11 additive parameters computed to determine shielding effects of substituents. The chemical shift coefficients obtained are compared to their organic analogs.

A carbon‐13 NMR study of sterically hindered organotin derivatives

“…A more detailed discussion of I3C chemical shift variations has been given previously, together with the aromatic I3C shifts reported in an abbreviated form. 2 The individual shifts for the aromatic rings of the neophyl, benzyl and phenyl groups all occur within small identifiable limits, the largest variation being observed for the tinsubstituted carbon of the phenyl group, but even this is less than 2ppm. Thus, the peaks serve well for identification but, in our opinion, the small variations from one compound to another have no other useful interpretation.…”