Addition of Cr(CO)5 to the M(η2- S2) moiety of Cp2 M(S2H (Cp′ = tBuC5H4 : M = Ta; CpX = C5Me4Et: M = Nb) and crystal structures of Cp′2TaS2H · [Cr(CO)5]n (n = 1, 2)

Autor:	Bernhard Stubenhofer, Claude Moïse, Bernhard Nuber, J.C. Leblanc, Günther Gehart, Henri Brunner, Florence Volpato, Joachim Wachter
Rok vydání:	1996
Předmět:	Ligand Organic Chemistry chemistry.chemical_element Crystal structure Biochemistry Sulfur law.invention Adduct Inorganic Chemistry Chromium Crystallography chemistry Molybdenum law Materials Chemistry Moiety Physical and Theoretical Chemistry Crystallization
Zdroj:	Journal of Organometallic Chemistry. 517:47-51
ISSN:	0022-328X
DOI:	10.1016/0022-328x(95)06001-d
Popis:	Reaction of Cp′2TaS2H (Cp′ = tBuC5H4) or Cp2xNbS2H (Cpx = C5Me4Et) with an excess of Cr(CO)5THF gives the adducts Cp′2TaS2H · Cr(CO)5 1, Cp′2TaS2H · 2Cr(CO)5 2, and Cp2xNbS2H · Cr(CO)5 3 respectively. 1 and 2 are separated by fractional crystallisation. The crystal structures show the Cr(CO)5 fragment in 1 to be coordinated to the ‘outer’ sulfur, and in 2 both Cr(CO)5 fragments are coordinated to each sulfur of the S2 ligand in a trans fashion. In all cases approximate sp3 hybridisation of the S atoms is observed. The new compounds are thermally labile and give CO-free, trinuclear compounds of the type Cp4M2S4Cr upon heating their solutions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::064f38147a6501275aadd1055a3f401a https://doi.org/10.1016/0022-328x(95)06001-d Zobrazit plný text záznamu Full Text from ScienceDirect