Dynamic Permutational Isomerism in a closo-Cluster

Junhong Fu, Mahbod Morshedi, Graeme J. Moxey, Adam Barlow, Marie P. Cifuentes, Mark G. Humphrey*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    Permutational isomers of trigonal bipyramidal [W2RhIr2(CO)95-C5H5)25-C5HMe4)] result from competitive capping of either a W2Ir or a WIr2 face of the tetrahedral cluster [W2Ir2(CO)105-C5H5)2] from its reaction with [Rh(CO)25-C5HMe4)]. The permutational isomers slowly interconvert in solution by a cluster metal vertex exchange that is proposed to proceed by Rh-Ir and Rh-W bond cleavage and reformation, and via the intermediacy of an edge-bridged tetrahedral transition state. The permutational isomers display differing chemical and physical properties: replacement of CO by PPh3 occurs at one permutational isomer only, while the isomers display distinct optical power limiting behavior.

    Original languageEnglish
    Pages (from-to)5128-5132
    Number of pages5
    JournalChemistry - A European Journal
    Volume22
    Issue number15
    DOIs
    Publication statusPublished - 4 Apr 2016

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