Reactions of trimeric 1-benzyl-2-gold(I)imidazole leading to AuI carbene complexes. Crystal structure of [1-benzyl-3-benzoyl-imidazolin-2-yliden]chlorogold(I)
摘要:
The crystal structure determination of a compound previously described as tris-[{mu-(N1-benzyl)imidazolato-N3,C2}(chloro)benzoylgold(III)], which turned out to be a gold(I) mononuclear carbene derivative, has led to a reconsideration of the reactions of [Au3im3] (im = mu-(N1-benzyl)imidazolato-N3,C2) with reagents X-Y. The mononuclear or trinuclear nature of other Au imidazolyl derivatives is discussed and the compounds obtained by reaction with X-Y = Cl-COOEt, I-Et or Cl-p-tosyl and chlorobenzoyl appear to e mononuclear, whereas those obtained by reaction with Me3SiI, SOCl2 or I2 appear to be trinuclear mixed valence or gold(III) compounds.