METATHETICAL REACTIONS OF CARBONYLATE ANIONS WITH DICHLORORUTHENIUM COMPLEXES: PREPARATION AND CHARACTERIZATION OF RUTHENIUM-MOLYBDENUM AND RUTHENIUM-MANGANESE COMPLEXES

Article abstract of DOI:10.1016/0022-328X(85)80227-8

The possibility of making metal-metal bonded heterobimetallic species by metathesis of ruthenium dichlorides with anionic carbonylates is demonstrated by the isolation of MoRu(μ-Cl)(CO)2(PPh3)2(η-C5H5) (1) and MnRuCl(μ-CO)2(CO)3(μ-dppm)2 (2), obtained by action of ^- on RuCl2(PPh3)3 and of Mn(CO)5^- on RuCl2(dppm)2, respectively.In contrast, reaction of Mn(CO5)^- with RuCl2(PMe3)4 yielded an ionic species 3 containing the diruthenium cation Ru2Cl3(PMe3)46⁺.More interestingly, the action of Mn(CO)5^- on RuCl2(PPh3)3 resulted in formation of the unexpected complex MnRu(μ-PPh2)(CO)6(PPh3)2 (4) in which the phosphido group PPh2 bridges the two metals; this process is shown to involve a hydride intermediate, and elimination of a molecule of benzene, both identified in the reaction mixture.