Ruthenium II -Chlorido Complexes of Dimethylsulfoxide

Submitted by IOANNIS BRATSOS and ENZO AUESSIO Checked by MARK E. RINGENBERG4 and THOMAS B. RAUCH FUSS  

Dipartimento di Scienze Chimiche, Universita di Trieste, 34127 Trieste, Italy. Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801. 

Inorganic Syntheses, Volume 35, edited by Thomas B. Rauchfuss Copyright 2010 John Wiley Sons, Inc. 

Herein, we present an improved, convenient, and highly reproducible synthesis of r/,v- RuCI2(dmso)4], as well as the routine synthesis of the trans isomer, trails-] RuCI2(dmso-S)4]. The first procedure is a modified and improved version of that given in the literature.3 It involves a preliminary, but essential, step the reflux of commercial hydrated RuC13 in ethanol. This procedure, compared to that originally established by Wilkinson and coworkers, besides being well reproducible, also avoids the tedious concentration of the hot DMSO solution. 

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