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Issue 46, 2015
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Group 9 bimetallic carbonyl permethylpentalene complexes

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We describe the synthesis, structure and bonding of the first iridium and rhodium permethylpentalene complexes, syn-[M(CO)2]2(μ:η55-Pn*) (M = Rh, Ir). In fact, [Ir(CO)2]2(μ:η55-Pn*) is the first iridium pentalene complex. An interesting preference for the isolation of the sterically more demanding syn-isomer is observed and substantiated by DFT analysis. Upon photolysis, the rhodium analogue yields an unusual tetrameric species Rh4(CO)6(μ:η35-Pn*)2 with bridging carbonyls and Rh–Rh bonds, which has been characterised by single crystal X-ray diffraction and by solution NMR spectroscopy.

Graphical abstract: Group 9 bimetallic carbonyl permethylpentalene complexes

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The article was received on 25 Sep 2015, accepted on 21 Oct 2015 and first published on 23 Oct 2015

Article type: Paper
DOI: 10.1039/C5DT03747F
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Citation: Dalton Trans., 2015,44, 20147-20153

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    Group 9 bimetallic carbonyl permethylpentalene complexes

    F. M. Chadwick, A. E. Ashley, R. T. Cooper, L. A. Bennett, J. C. Green and D. M. O'Hare, Dalton Trans., 2015, 44, 20147
    DOI: 10.1039/C5DT03747F

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