SYNTHESIS AND CHARACTERIZATION OF NEW CYCLOPALLADATED CARBENE COMPLEXES

Di-μ-chlorobis(2-methyl-2-methoxy-3-t-butylthiopropyl)dipalladium(II) reacted with bis(1,3-diphenyl-2-imidazolidinylidene) to afford a new chlorobridged carbene complex [{PdCl(did)}2] (did 1,3-diphenyl-2-imidazolidinyl-idenato,2-C,2′-C) in 46.2% yield, which has a cyclopalladated chelate structure involving a Pd-carbene and a Pd-aryl bond; new carbene complexes, [{PdBr(did)}2], [{Pd(CH3COO)(did)}2], [Pd(acac)(did)], and [PdCl(did)Q] (Q 4-MePy, P[OCHMe2]3) were also prepared from [{PdCl(did)}2]. © 1979.