The Effect of Very Bulky Groups on the Equilibrium of Penta- and Hexacoordinated Phosphoranes
作者:A. Chandrasekaran、Natalya V. Timosheva、Robert R. Holmes
DOI:10.1080/10426500600683126
日期:2006.6.1
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