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Investigations on organotin compounds: Part XVIII. The basicity of triorganotin hydroxides

✍ Scribed by M. J. Janssen; J. G. A. Luijten

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 350 KB
Volume: 82
Category: Article
ISSN: 0165-0513
DOI: 10.1002/recl.19630821009

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✦ Synopsis

Abstract

The basicities of a number of triorganotin hydroxides have been compared by measuring the acid dissociation constants of aquotriorganotin cations in 44% aqueous ethanol (by weight) at 25°. The equilibrium constants are given in concentration constants K~c~, valid at an ionic strength of 0.01. Two series of organotin compounds were studied, namely trialkyltin hydroxides and mixed ethylphenyl derivatives. Basicities are influenced by inductive effects but also strongly by steric effects. Whether also an influence of d π ‐ p π overlap exists in the phenyltin series, cannot be clearly distinguished, because much if not all of the p__K__ shift on introduction of phenyl groups can be explained in terms of inductive and steric effects.

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