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The interaction of an osmium-carbon triple bond with copper(I), silver(I) and gold(I) to give mixed dimetallocyclopropene species and the structures of Os(AgCl) (CR) Cl(CO) (PPh3)2
Authors:GR Clark  CM Cochrane  WR Roper  LJ Wright
Institution:Department of Chemistry, University of Auckland, Auckland New Zealand
Abstract:The osmium carbyne complex, Os(CR)Cl(CO)(PPh3)2, (R  p-tolyl) reacts with Group I halides to form the mixed dimetallocyclopropene species, Os(Cul)(CR)Cl(CO)(PPh3)2, Os(AgCl)(CR)Cl(CO)(PPh3)2, Os(AuCl)(CR)Cl(CO)(PPh3)2, and OsAg(OClO3)](CR)Cl(CO)(MeCN)(PPh3)2] ClO4 X-ray crystal structure determination of Os(AgCl)(CR)Cl(CO)(PPh3)2 confirms the presence of a three-membered ring and the structure can be viewed as the “acetylene-like” interaction of an osmium—carbon triple bond with AgCl. In acid solution AgCl is precipitated and an alkylidene complex results from proton addition to the carbyne ligand.
Keywords:To whom correspondence should be addressed at Virginia Polytechnic Institute and State University  
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