Einfluß verschiedenartig substituierter Cyclopentadienylliganden auf die Chemie schwefelreicher Organometallkomplexe mit Metallen der 6. Nebengruppe ( = INFLUENCE OF DIFFERENTLY SUBSTITUTED CYCLOPENTADIENYL LIGANDS ON CHEMISTRY OF ORGANOMETAL COMPLEXES WITH SULFUR)

URN to cite this document:

urn:nbn:de:bvb:355-epub-230412 Copy

DOI to cite this document:

10.5283/epub.23041 Copy

Brunner, Henri ; Grassl, Roland ; Meier, Walter ; Wachter, Joachim ; Nuber, Bernd ; Ziegler, M. L.

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Date of publication of this fulltext: 05 Jan 2012 08:46

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Details

Item type:	Article
Journal or Publication Title:	Journal of Organometallic Chemistry
Publisher:	Elsevier
Volume:	434
Number of Issue or Book Chapter:	1
Page Range:	pp. 63-78
Date:	1992
Institutions:	Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Arbeitskreis Dr. Joachim Wachter
Identification Number:	Value Type 10.1016/0022-328X(92)83354-K DOI
Dewey Decimal Classification:	500 Science > 540 Chemistry & allied sciences
Status:	Published
Refereed:	Unknown
Created at the University of Regensburg:	Unknown
Item ID:	23041

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Abstract

The reaction of the differently substituted cyclopentadienyl complexes L2M2(CO)4 with sulfur is investigated with respect to the ligand L (etmcp = ethyltetramethylcyclopentadienyl, tbcp = t-butylcyclopentadienyl, ipcp = isopropylcyclopentadienyl) and the metal M (Cr, Mo, W). For M = Cr the only isolated product is etmcp2Cr2S5. For M = Mo three isomers A, D, E of composition L2Mo2S4 (L = ipcp, ...

Abstract

The reaction of the differently substituted cyclopentadienyl complexes L2M2(CO)4 with sulfur is investigated with respect to the ligand L (etmcp = ethyltetramethylcyclopentadienyl, tbcp = t-butylcyclopentadienyl, ipcp = isopropylcyclopentadienyl) and the metal M (Cr, Mo, W). For M = Cr the only isolated product is etmcp2Cr2S5. For M = Mo three isomers A, D, E of composition L2Mo2S4 (L = ipcp, etmcp) are formed whereas only two isomers (A, D) exist for L = tbcp. Only two isomers (D, E) of composition L2W2S4 are formed in the system L2W2(CO)4/S8, a further product is L2W2(CO)2S3 for L = etmcp. Structural characterisation of all compounds was achieved by IR, H-1, and Mo-95 NMR spectroscopy, whereas the structures of syn-etmcp2M2(mu-S)2S2 (M = Mo, W) were determined by X-ray crystallography, the result of which allows the correction of a previous structure assignment. It is further shown that a thermal equilibrium exists between L2Mo2(mu,eta-2-S2)(mu-S)2 (A) and syn-L2Mo2(mu-S)2S2 (D) which depends strongly on the ligands.

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