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  Home > JCE Print > Journal of Chemical Education > Issues > 1995  > October  >
Features
The Microscale Laboratory
The Conversion of Triphenylphosphine to the Oxide: A Simple Experiment to Illustrate Catalytic Oxotransfer
Francisco J. Arnáiz and Rafael Aguado
Laboratorio de Quimica Inorganica, Universidad de Burgos, 09001 Burgos, Spain
Cover
October 1995
Vol. 72 No. 10
p. A196
Abstract
Most synthetic complexes that mimic oxotransferases contain sterically demanding sulfur ligands since two of the criteria for relevant models are the sulfur environment and hindrance to irreversible mu-oxo dimer formation. However, some molybdenum complexes lacking these requisites show a remarkable ability to act as oxotransfer agents. Here we describe the simple synthesis of an easy, very active, catalyst [MoO2Cl2(DMSO)2, (DMSO = dimethylsulphoxide)] and its application in the oxidation of triphenylphosphine (PPh3) to triphenylphosphine oxide (OPPh3) by DMSO. This oxidation of PPh3 provides a good example of the catalytic oxotransfer process since PPh3 is inexpensive, resistant to aerial oxidation, widely used in oxotransfer studies, and has a low volatility.
More Information
*  Citation
 Arnaiz, Francisco J.; Aguado, Rafael. J. Chem. Educ. 1995 72 A196.
*  Keywords
*  History
 Created:
Last Updated:		 10/1/1999
5/22/2006
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