The synthesis of heteronuclear transition‐metal clusters derived from methylidyne tricobalt cluster precursors: The reaction of Mn(CO) with (μ3‐CCl)Co3(CO)7(μ‐dppm). The crystal and molecular structure of (μ3‐CH)Co2Mn(CO)8(μ‐dppm), a methylidyne cluster containing a seven‐coordinate manganese atom

Abstract

AbstractThe reaction of manganese pentacarbonyl anion with chloromethylidyne tricobaltnonacarbonyl, (μ3‐CCl)Co3(CO)9, leads to reduction of the cluster with formation of Mn2(CO)10 and Co(CO), whilst reaction of Mn(CO) with the bis(diphenylphosphino)methane (dppm)‐stabilised cluster (μ3‐CCl)Co3(CO)7(μ‐dppm) leads to the formation of (μ3‐CH)Co2Mn(CO)8(μ‐dppm), 1. The unique feature of the structure of 1 is the incorporation of a seven‐coordinate manganese atom into the metal triangle.