Synthesis and Characterization of Gold(I) and Gold(III) Complexes Derived from Benzimidazolin-2-ylidene Ligands

Ekkehardt Hahn (1) , Mareike Jahnke (2) , Tania Pape (2)

1 Institut fuer Anorganische Chemie
2 Institut fuer Anorganische Chemie

Substitution of the chloro ligand in (N,N'-dialkylbenzimidazolin-2-ylidene)gold(I) chlorides (alkyl = methyl, ethyl, propyl, butyl) succeeded by treatment of the gold chloride complexes with lithium bromide in acetone leading to the gold complexes of type [AuBr(L)] 1-4. Furthermore, the Au-Ccarbene bond in complexes 1-4 is inert towards a change of the oxidation state of the metal center. Complexes 1-4 have been oxidized chemically with elemental bromine leading to the gold(III) carbene complexes of type [AuBr3(L)] 5-8. The molecular structures of the gold(I) complexes 1, 2 and 4 exhibiting a linear topology are presented together with the two molecular structures of the square-planar gold(III) complexes 6 and 8.

Mots clés: Physical Sciences

Ekkehardt Hahn, Mareike Jahnke, Tania Pape. Synthesis and Characterization of Gold(I) and Gold(III) Complexes Derived from Benzimidazolin-2-ylidene Ligands. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2010, 636 (13-14), pp.2309. ⟨10.1002/zaac.201000234⟩. ⟨hal-00599880⟩