Reactions of tetrachlorocyclopentadienyltantalum(V) derivatives with hexamethyldialuminum. Crystal and molecular structure of dichlorodimethylpentamethylcyclopentadienyltantalum(V)
Authors
Gómez Rubio, Manuel; Jiménez Pindado, Gerardo; Royo Gracia, Pascual; Selas Pérez, José Manuel; Raithby, Paul R.Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4630DOI: 10.1016/0022-328X(92)80225-M
ISSN: 0022-328X
Publisher
Elsevier
Date
1992Bibliographic citation
Journal of Organometallic Chemistry, 1992, v. 439, p. 147-154
Keywords
Metal-carbon bonds
Iridium complexes
Tantalum
Abstraction
Niobium
Decomposition
Compound
CO
Project
PB89-0208 (Comisión Interministerial de Ciencia y Tecnología-CICYT)
Info:eu-repo/ SCl*-0137-C(MB)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/0022-328X(92)80225-MRights
(c) Elsevier, 1992
Access rights
info:eu-repo/semantics/openAccess
Abstract
The reaction of [TaCpCl4](CP = η5-C5Me5, η5-C5H4SiMe3 or η5-C5H3(SiMe3)2) with Al2Me6 leads to [TaCpCl3Me] (Cp = η5-C5Me5 (2a), η5-C5H4SiMe3 (2b), or η5-C5H3(SiMe3)] (2c)) and [TaCpCl2Me2] (CP = η5 - C5Me5 (3a)). The structure of 3a has been determined by X-ray diffraction. The compound crystallizes in the monoclinic space group P21/m, with Z = 2, a 6.770(3), b 13.969(3) and c 8.395(2) Å, β 112.25(3)°; the structure was refined to R = 0.059 and wR = 0.095 for 1197 independent reflections having F > 4σ(F). The Ta atom may be considered as being five-coordinate if the substituted cyclopentadienyl ring occupies a single coordination site, and the geometry at the metal approximates to a square-based pyramid.
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