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The Complexed Triphosphaallyl Radical, Cation, and Anion Family [Eine Familie mit komplexiertem Triphosphaallyl-Radikal, -Kation und -Anion]

Scheer, Manfred ; Kuntz, Christian ; Stubenhofer, Markus ; Linseis, Michael ; Winter, Rainer F. ; Sierka, Marek
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Date of publication of this fulltext: 07 Jun 2010 12:16


Abstract

Radically complex: The photolytic reaction of [Cp*P{W(CO)5}2] (Cp*=C5Me5) with a diphosphene produces, via a radical intermediate, an air-stable complexed triphosphaallyl radical, in which the unpaired electron is evenly distributed over both terminal P atoms. Oxidation of the radical leads to a triphosphaallyl cation, which is only stable at low temperatures in solution, whereas the stable triphosphaallyl anion is formed by reduction (see picture, Mes*=2,4,6-tri-tert-butylphenyl).


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