ISSN:
0044-2313
Keywords:
Metallocene-diselenolates
;
DNMR
;
EPR
;
X-Ray
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Synthesis and Characterization of Metallocene Chelates of Heterocyclic 1,2-DiselenolatesSynthesis and properties of metallocen diselenolates Cp2RML (CpR = η5-C5H4CH3 (Cp′); η5-C5(CH3)4 C2H5 (Cpo)) of titanium(IV) and vanadium(IV) with L = dsit (1,3-dithiole-2-thione-4,5-diselenolate), dsise (1,3-dithiole-2-selone-4,5-diselenolate) dsitse (1,3-thiaselenole-2-selone-4,5-diselenolate) and dsis (1,3-diselenole-2-selone-4,5-diselenolate) are described. The structures of these compounds in solution are discussed using 1H, 13C, 77Se NMR and EPR data. Their voltammetric behaviour is investigated in dichloromethane. The activation parameters of the chelate ring inversion of the titanocene diselenolates (Cp2RTiL) and the x-ray structures of Cp2′Ti(dsit), Cp2oTi(dsit); Cp2oTi(dsise) (2 modifications) and Cp2oTi(dsis) are reported.
Notes:
Synthese und Eigenschaften neuer Metallocen-Diselenolate CpR2ML (CpR = η5-C5H4CH3 (Cp′); η5C5(CH3)4C2H5 (Cpo)) des Titan(IV) und Vanadium(IV) mit L = dsit(1,3-Dithiol-2-thion-4,5-diselenolat), dsise (1,3-Dithiol-2-selon-4,5-diselenolat) dsitse (1,3-Thiaselenol-2-selon-4,5-diselenolat) und dsis (1,3-Diselenol-2-selon-4,5-diselenolat) und dsis (1,3-Diselenol-2-selon-4,5-diselenolat) werden beschrieben. Die Strukturen der Verbindungen in Lösung werden anhand der 1H-, 13C-, 77Se-NMR- und EPR-Spektren sowie ihres Redoxverhaltens diskutiert. Die durch dynamische Kernresonanzspektroskopie bestimmten Aktivierungsparameter der Chelatringinversion der Titanocen-Diselenolate (CpR2TiL), sowie die Röntgenkristallstrukturanalysen von Cp′2Ti(dsit), Cp2oTi(dsit); Cp2oTi(dsise) (2 Modifikationen) und Cp2oTi(dsise) werden vorgestellt.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19966221128
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