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Syntheses and Structures of Dinuclear Gold(I) Dithiophosphonate Complexes and the Reaction of the Dithiophosphonate Complexes with
 

Summary: Syntheses and Structures of Dinuclear Gold(I) Dithiophosphonate
Complexes and the Reaction of the Dithiophosphonate Complexes with
Phosphines: Diverse Coordination Types
Angelo Maspero,, Ibrahim Kani, Ahmed A. Mohamed, Mohammad A. Omary,*,
Richard J. Staples,| and John P. Fackler, Jr.*,
Department of Chemistry and Laboratory for Molecular Structure and Bonding,
Texas A&M UniVersity, P.O. Box 30012 College Station, Texas 77842-3012, Dipartimento di
Scienze Chimiche, Fisiche e Matematiche, UniVersita' dell'Insubria, Via Valleggio 11,
22100 Como, Italy, Department of Chemistry, UniVersity of North Texas, P.O. Box 305070,
Denton, Texas 76203, and Department of Chemistry and Chemical Biology, HarVard UniVersity,
12 Oxford Street, Cambridge, Massachusetts 02138
Received January 31, 2003
The dinuclear gold(I) dithiophosphonate complex, [Au2(dtp)2] (1), where dtp ) [S2P(R)(OR)]-
with R ) p-C6H4-
OCH3; R) c-C5H9, has been synthesized and its reaction studied with the phosphine ligands PPh3 and Ph2P(CH2)n-
PPh2 (n ) 1-4). Compound 1 contains two gold atoms homobridged by the anionic dithiophosphonate ligand,
forming an eight-membered ring complex in a chair form. After the reaction of 1 with diphosphine ligands, the
dinuclear open-ring complexes Au2(dppm)(dtp)2 (2), Au2(dppe)(dtp)2 (3), Au2(dppp)(dtp)2 (4), Au2(dppb)(dtp)2 (5)
were formed (dppm ) diphenylphosphinomethane; dppe ) diphenylphosphinoethane; dppp ) diphenylphosphi-
nopropane; dppb ) diphenylphosphinobutane). The reaction with dppm is stoichiometry-dependent. Thus, when 1

  

Source: Abdou, Hanan E. - Department of Chemistry, Texas A&M University

 

Collections: Chemistry