1-Selenolato-2-phenyl-o-carborane complexes of palladium(II) and platinum(II): Synthesis, spectroscopy and structures |
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| Authors: | Manoj K Pal Nisha P Kushwah Sergey A Glazun Vladimir I Bregadze |
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| Institution: | a Chemistry Divison, Bhabha Atomic Research Center, Mumbai 400085, India
b A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str. 119991 Moscow, Russia |
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| Abstract: | The reactions of PhCboSeNa (Cbo = o-C2B10H10), prepared by reductive cleavage of Se-Se bond in (PhCboSe)2 by NaBH4 in methanol, with Na2PdCl4, MCl2(PR3)2 and M2Cl2(μ-Cl)2(PR3)2] afforded a variety of complexes, viz., Pd(SeCboPh)Cl] (1), M(SeCboPh)2(PR3)2], M2Cl2(μ-SeCboPh)(μ-Cl)(PR3)2] (M = Pd, Pt) and Pd2Cl(SeCb0Ph)(μ-Cl)(μ-SeCboPh)(PEt3)2] (7) have been isolated. These complexes were characterized by elemental analyses and NMR (1H, 31P, 77Se, 195Pt) spectroscopy. The structures of Pd(SeCboPh)2(PEt3)2] (2), Pt(SeCboPh)2(PMe2Ph)2] (3), Pd2Cl2(μ-SeCboPh)(μ-Cl)(PMe2Ph)2] (5) and Pd2Cl(SeCboPh)(μ-Cl)(μ-SeCboPh)(PEt3)2] (7) were established by X-ray crystallography. The latter represents the first example of asymmetric coordination of selenolate ligands in binuclear bis chalcogenolate complexes of palladium and platinum. Thermolysis of Pd(SeCboPh)2(PEt3)2] (2) in HDA (hexadecylamine) at 330 °C gave nano-crystals of Pd17Se15. |
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| Keywords: | Seleno-o-carborane Palladium Platinum Complexes X-ray structures |
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