Cyclo-E₅-bridged trinuclear triple-decker complexes (E = P, As) containing a triply-bonded Mo₂ unit and their isomerisation

Abstract

The trinuclear species Cp*Fe(μ3,η5:2:2-P5)Mo2[μ,κ2-PhB(N-2,6-iPr2C6H3)2]2 readily isomerises at ambient temperature and its core motif is transformed into a cubane-like FeMo2P5 fragment.

Homo- and heterobimetallic transition metal cluster derived from [Cp*Fe(η5-E5)] (E = P, As) – unprecedented structural motifs of the resulting polypnictogen ligands

“…16 An alternative synthetic approach was realised independently by the groups of Roesky and Tsai. Under reductive conditions, they achieved the formation of di or trimetallic complexes of 1 or 2 and f-block 17,18 or d-block metals, 19 respectively. For example, the highly reducing quadruple bond within the dimolybdenum complex Mo 2 [μ,κ 2 -Me 2 Si( N -2,6- i Pr 2 C 6 H 3 ) 2 ] 2 reacts with 1 or 2 to the trimetallic species VI revealing a novel structural motif (Fig.…”