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New Trinuclear Complexes of Group 6, 8, and 9 Metals with a Triply Bridging Borylene Ligand
Kuppusamy Yuvaraj, Moulika Bhattacharyya, Rini Prakash, Venkatachalam Ramkumar,
Published in Wiley-VCH Verlag
2016
Volume: 22
   
Issue: 26
Pages: 8889 - 8896
Abstract
Trinuclear complexes of group 6, 8, and 9 transition metals with a (μ3-BH) ligand [(μ3-BH)(Cp*Rh)2(μ-CO)M′(CO)5], 3 and 4 (3: M′=Mo; 4: M′=W) and 5–8, [(Cp*Ru)3(μ3-CO)2(μ3-BH)(μ3-E)(μ-H){M′(CO)3}] (5: M′=Cr, E=CO; 6: M′=Mo, E=CO; 7: M′=Mo, E=BH; 8: M′=W, E=CO), have been synthesized from the reaction between nido-[(Cp*M)2B3H7] (nido-1: M=Rh; nido-2: M=RuH, Cp*=η5-C5Me5) and [M′(CO)5⋅thf] (M′=Mo and W). Compounds 3 and 4 are isoelectronic and isostructural with [(μ3-BH)(Cp*Co)2(μ-CO)M′(CO)5], (M′=Cr, Mo and W) and [(μ3-BH)(Cp*Co)2(μ-CO)(μ-H)2M′′H(CO)3], (M′′=Mn and Re). All compounds are composed of a bridging borylene ligand (B−H) that is effectively stabilized by a trinuclear framework. In contrast, the reaction of nido-1 with [Cr(CO)5⋅thf] gave [(Cp*Rh)2Cr(CO)3(μ-CO)(μ3-BH)(B2H4)] (9). The geometry of 9 can be viewed as a condensed polyhedron composed of [Rh2Cr(μ3-BH)] and [Rh2CrB2], a tetrahedral and a square pyramidal geometry, respectively. The bonding of 9 can be considered by using the polyhedral fusion formalism of Mingos. All compounds have been characterized by using different spectroscopic studies and the molecular structures were determined by using single-crystal X-ray diffraction analysis. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
About the journal
JournalData powered by TypesetChemistry - A European Journal
PublisherData powered by TypesetWiley-VCH Verlag
ISSN09476539
Open AccessNo
Concepts (17)
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    Boron
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    Ligands
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    Manganese
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    Ruthenium
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    Single crystals
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    Spectroscopic analysis
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    Transition metals
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    X ray diffraction analysis
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    BORYLENE LIGANDS
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    BORYLENES
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    Isostructural
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    Metallaboranes
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    Single crystal x-ray diffraction analysis
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    Spectroscopic studies
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    Square-pyramidal geometry
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    Trinuclear complex
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    Rhodium