Darstellung und Struktur der Zweikernigen tert-Butyliminovanadium(IV)-Komplexe [(μ?NtC4H9)2V2(CH2CMe3)2X2] (X = OtC4H9, CH2CMe3) |
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Authors: | F. Preuss,G. Overhoff,H. Becker,H. J. H usler,W. Frank,G. Reiß |
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Affiliation: | F. Preuss,G. Overhoff,H. Becker,H. J. Häusler,W. Frank,G. Reiß |
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Abstract: | Synthesis and Molecular Structure of the Binuclear tert-Butyliminovanadium(IV) Complexes [(μ-NtC4H9)2V2(CH2CMe3)2X2] (X = OtC4H9, CH2CMe3) Syntheses of the neopentylvanadium(V) compounds tC4H9N?V(CH2CMe3)3?n(OtC4H9)n (n = 0 ( 7 ), 1 ( 6 ), 2) are described. 6 and 7 decompose by irradiation splitting off neopentane and yielding the binuclear diamagnetic neopentylvanadium(IV) complexes [(μ-NtC4H9)2V2(CH2CMe3)2X2] [X = OtC4H9 ( 8 ), CH2CMe3 ( 11 )]. All compounds obtained are characterized by 1H and 51V NMR spectroscopy. 8 has been found by X-ray diffraction analysis to be a binuclear complex with bridging tert-butylimino ligands and a vanadium—vanadium single bond. The complexes tC4H9N?V(CH2C6H5)(OtC4H9)2 and [(μ-NtC4H9)2V2(CH2SiMe3)2(OtC4H9)2] ( 10 ) have been also prepared; the crystal structure of 8 and 10 are nearly identical. |
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Keywords: | Neopentyl complexes of vanadium(V,IV) syntheses 1H, 51V-NMR crystal structure |
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