From butadiynyl (–CC–CCR) ligands to alkylidyne–carbides: synthesis and characterisation of the unusual hexanuclear ruthenium carbido clusters [Ru6(CO)13(µ-CO)2(µ-PPh2)(µ5-C)(µ3-C–CCR)](R = But, Ph)

Abstract

The preparation from [Ru₃(CO)₁₁(PPh₂CC-CC–R)](R = Bu^t, Ph) of the hexanuclear complexes [Ru₆(CO)₁₃(µ-CO)₂(µ-PPh₂)(µ₅-C)(µ₃-C–CCR)](R = Bu^t1, Ph 2) containing a novel alkylidyne–carbide ligand is described; the structure of 1 is determined by a single-crystal X-ray diffraction study.