The Effect of Very Bulky Groups on the Equilibrium of Penta-and Hexacoordinated Phosphoranes 1

A Chandrasekaran, NV Timosheva…

Index: Chandrasekaran; Timosheva, Natalya V.; Holmes, Robert R. Phosphorus, Sulfur and Silicon and the Related Elements, 2006 , vol. 181, # 7 p. 1493 - 1511

Full Text: HTML

Citation Number: 9

Abstract

The synthesis of dithio-diphenol 4 and sulfonyl-diphenol 5, both with very bulky groups, provided starting materials for reaction sequences that led to the formation of the very stable hexacoordinated phosphorane 2 and sensitive pentacoordinated phosphorane 3. Hexacoordination was established in 2 by an intramolecular donor interaction at the phosphorus center from an oxygen atom of the sulfonyl group present as part of the eight- ...