Cyclopentadienyl-ruthenium and -osmium chemistry. Cleavage of tetracyanoethylene under mild conditions: X-ray crystal structures of [Ru{η3-C(CN)2CPhCC(CN)2}(PPh3)(η-C5H5)] and [Ru{C[C(CN)2]CPhC(CN)2}-(CNBut)(PPh3)(η-C5H5)]

Abstract

The reaction between [RU(C₂Ph)(PPh₃)₂(η-C₅H₅)] and C₂(CN)₄ affords [Ru{η³-C(CN)₂ CPhCC(CN)₂}-(PPh₃)(η-C₅H₅)](2), which forms [Ru{C[C(CN)₂]- CPhC(CN)₂}(L)(PPh₃)(η-C₅H₅)](5) with L = CO or CNBu^t; the structures of (2) and (5; L = CNBu^t) have been determined by X-Ray crystallography.