Unusual reactions of a cationic carbyne complex of manganese with carbonyliron dianions to form a novel dimetal carbene-bridged complex [MnFe{µ-C(COEt)Ph}(η-C5H5)(CO)5

Abstract

The reaction of [Mn(CPh)(η-C5H5)(CO)2]BBr41 with [NEt4]2[Fe2(CO)8] in tetrahydrofuran at low temperature gave a novel heteronuclear dimetal carbene-bridged complex [MnFe{µ-C(COEt)Ph}(η-C5H5)(CO)5]3, and a dimetal dicarbene complex [{(OC)2(η-C5H5)Mn(CPh)}2Fe2(CO)8]4, as well as [Mn(η-C5H5)-(CO)3]2. The same products, 2 and 3, were obtained from the reaction of 1 with Na2[Fe(CO)4]. The structure of 3 has been established by X-ray crystallography.