Reactivity of [Cp*Mo(CO)₃Me] with chalcogenated borohydrides Li[BH₂E₃] and Li[BH₃EFc] (Cp* = (ŋ⁵-C₅Me₅); E = S, Se or Te; Fc = (C₅H₅-Fe-C₅H₄))

Journal of Chemical Sciences

ANAMIKA PAUL¹  SUNDARGOPAL GHOSH¹  KOUSHIK SAHA¹  RONGALA RAMALAKSHMI¹ 

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关键词: Molybdenum;    thioacetate;    sulfur;    borate;    ferrocene.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Reactivity of [Cp*Mo(CO)₃Me], 1 with various chalcogenide ligands such as Li[BHâ‚‚E₃] andLi[BH₃EFc]] (E = S, Se or Te; Fc = (Câ‚…Hâ‚…-Fe-Câ‚…H₄)) has been described. Room temperature reaction of 1 with Li[BHâ‚‚E₃] (E = S and Se) yielded metal chalcogenide complexes [Cp*Mo(CO)â‚‚(Å‹2-Sâ‚‚CCH3)], 2 and [Cp*Mo(CO)â‚‚(Å‹1-SeCâ‚‚Hâ‚…)], 3. In compound 2, {Cp*Mo(CO)2} fragment adopts a four-legged piano-stool geometry with a η2-dithioacetate moiety. In contrast, treatment of 1 with Li[BH3(EFc)] (E = S, Se or Te; Fc = Câ‚…Hâ‚…-Fe-Câ‚…Hâ‚„) yielded borate complexes [Cp*Mo(CO)â‚‚(μ-H)(μ-EFc)BHâ‚‚], 4-6 in moderate yields. Compounds 4-6 are too unstable and gradual conversion to [{Cp*Mo(CO)â‚‚}â‚‚(μ-H)(μ-EFc] (7: E = S; 8: Se) and [{Cp*Mo(CO)â‚‚}â‚‚(μ-TeFc)â‚‚], 9 happened by subsequent release of BH₃. All the compounds have been characterized by mass spectrometry, IR, multinuclear NMR spectroscopy and structures were unequivocally established by crystallographic analysis for compounds 2, 3 and 7.

【 授权许可】

Unknown