Reaction of alkynes with cluster-bound dicarbon (C2); X-ray structures of [Ru5(µ5-CCCPhCR)(µ-SMe)2(µ-PPh2)2(CO)10](R = H, Ph)
Abstract
Addition of PhCCR (R = H, Ph)to [Ru5(µ5-C2)(µ-SMe)2(µ-PPh2)2-(CO)10] 1 results in the formation of [Ru5(µ5-CCCPhCR)(µ-SMe)2(µ-PPh2)2-(CO)10](R = H 2, Ph 3), the µ5-CCCPhCR ligand being formed by coupling of the alkyne with the C2 ligand of 1; in 2 the pentagonal Ru5 cluster of 1 is retained while 3 an extra Ru–Ru bond is formed, yielding an envelope-type structure; corresponding differences in the attachment of the organic ligand to the Ru5 cluster are found.