Extended sandwich molecules displaying direct metal-metal bonds

Barik, Subrat Kumar ; Chowdhury, Monojit Ghosal ; De, Susmita ; Parameswaran, Pattiyil ; Ghosh, Sundargopal (2016) Extended sandwich molecules displaying direct metal-metal bonds European Journal of Inorganic Chemistry, 2016 (28). pp. 4546-4550. ISSN 1434-1948

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/ejic.20...

Related URL: http://dx.doi.org/10.1002/ejic.201600888


Treatment of [Cp*IrCl2]2 (Cp* = pentamethylcyclopentadienyl) with Li[BH3(SePh)] at room temperature led to the isolation of a dimetala analogue of hexaborane(10), nido-[(Cp*Ir)(µ-SePh)2Ir{(Cp*Ir)SePh}B4H8] (1). Solid-state X-ray structure analysis of 1 showed an extended sandwich molecule with two iridium atoms between Cp* and a [B4Ir] ring. Further, in an effort to synthesize the Rh analogue of 1 under similar reaction conditions, we isolated arachno-[{(Cp*Rh)(µ-SePh)3}Rh(µ-SePh)B3H6] (2), a rhodium analogue of tetraboarane(10) in which the {RhB3} unit shows geometric equivalence with a metal π-allyl {MC3} species. Ir complex 1, having an Ir–Ir bond, can be considered similar to the dizinc sandwich complex [Cp*Zn-ZnCp*] in terms of the valence electron count at the metal centers.

Item Type:Article
Source:Copyright of this article belongs to John Wiley & Sons, Inc.
Keywords:Sandwich Complexes; Binuclear Metallocenes; Iridium; Rhodium; Boron; Density Functional Calculations
ID Code:108836
Deposited On:31 Jan 2018 11:56
Last Modified:31 Jan 2018 11:56

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