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Reactivity of [Cp*Mo(CO)3Me] with chalcogenated borohydrides Li[BH2E3] and Li[BH3EFc] (Cp* = (η5-C5Me5); E = S, Se or Te; Fc = (C5H5-Fe-C5H4))
Rongala Ramalakshmi, Koushik Saha, Anamika Paul,
Published in Springer India
2016
Volume: 128
   
Issue: 7
Pages: 1025 - 1032
Abstract
Reactivity of [Cp*Mo(CO)3Me], 1 with various chalcogenide ligands such as Li[BH2E3] and Li[BH3EFc] (E = S, Se or Te; Fc = (C5H5-Fe-C5H4)) has been described. Room temperature reaction of 1 with Li[BH2E3] (E = S and Se) yielded metal chalcogenide complexes [Cp*Mo(CO)2(η2-S2CCH3)], 2 and [Cp*Mo(CO)2(η1-SeC2H5)], 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 = C5H5-Fe-C5H4) yielded borate complexes [Cp*Mo(CO)2(μ-H)(μ-EFc)BH2], 4-6 in moderate yields. Compounds 4-6 are too unstable and gradual conversion to [{Cp*Mo(CO)2}2(μ-H)(μ-EFc] (7: E = S; 8: Se) and [{Cp*Mo(CO)2}2(μ-TeFc)2], 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. © Indian Academy of Sciences.
About the journal
JournalData powered by TypesetJournal of Chemical Sciences
PublisherData powered by TypesetSpringer India
ISSN09743626
Open AccessYes
Concepts (16)
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    Chalcogenides
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    Lithium
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    Mass spectrometry
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    Molybdenum
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    Nuclear magnetic resonance spectroscopy
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    Organometallics
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    Sulfur
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    BORATE
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    BORATE COMPLEXES
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    CRYSTALLOGRAPHIC ANALYSIS
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    Ferrocenes
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    Metal chalcogenide
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    Multinuclear nmr spectroscopy
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    PIANO STOOL GEOMETRY
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    THIOACETATE
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    Iron compounds