Synthesis, structure and characterization of dimolybdaheteroboranes

Dhayal, Rajendra Singh ; Ramkumar, V. ; Ghosh, Sundargopal (2011) Synthesis, structure and characterization of dimolybdaheteroboranes Polyhedron, 30 (12). pp. 2062-2066. ISSN 0277-5387

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Chalcogen-stabilized dimolybdaboranes 3–5 (3: [(Cp∗Mo)2B4H5Se(Ph)], 4: [(Cp∗Mo)2B4H3Se2(SeCH2Ph)] and 5: [(Cp∗Mo)2B3H6(BSR)(μ-η1-SR)] (R = 2,6-(tBu)2-C6H2OH)) have been isolated from the mild pyrolysis of dichalcogenide ligands, RE-E‘R (R = Ph: E = S, E‘ = Se; R = CH2Ph, [2,6-(tBu)2-C6H2OH]: E = E‘ = Se, S) and [(Cp∗Mo)2B4H8], 2, an intermediate generated from the reaction of [Cp∗MoCl4] (1) (Cp∗ = η5-C5Me5), with [LiBH4.thf]. The geometry of [(Cp∗Mo)2B4H5Se(Ph)] is similar to that of [(Cp∗Mo)2B5H9], in which one BH3 unit on the open face is replaced by a triple bridged selenium atom. All the compounds have been characterized in solution by 1H, 11B, 13C NMR and IR spectroscopy and elemental analysis. The structural types were unequivocally established by X-ray crystallographic analysis of compounds 3–5.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Boron; Metallaboranes; Chalcogen; Dimolybdaheteroboranes
ID Code:108919
Deposited On:31 Jan 2018 12:20
Last Modified:31 Jan 2018 12:20

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