Reactions of tetrachlorocyclopentadienyltantalum(V) derivatives with hexamethyldialuminium: Crystal and molecular structure of dichlorodimethylpentamethylcyclopentadienyltantalum(V)

Manuel Gómez; Gerardo Jimenez; Pascual Royo; José M. Selas; Paul R. Raithby

doi:10.1016/0022-328X(92)80225-M

Reactions of tetrachlorocyclopentadienyltantalum(V) derivatives with hexamethyldialuminium: Crystal and molecular structure of dichlorodimethylpentamethylcyclopentadienyltantalum(V)

Manuel Gómez, Gerardo Jimenez, Pascual Royo, José M. Selas, Paul R. Raithby

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	147-154
Number of pages	8
Journal	Journal of Organometallic Chemistry
Volume	439
Issue number	2
DOIs	https://doi.org/10.1016/0022-328X(92)80225-M
Publication status	Published - 3 Nov 1992

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/0022-328X(92)80225-M

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Reactions of tetrachlorocyclopentadienyltantalum(V) derivatives with hexamethyldialuminium: Crystal and molecular structure of dichlorodimethylpentamethylcyclopentadienyltantalum(V). / Gómez, Manuel; Jimenez, Gerardo; Royo, Pascual et al.
In: Journal of Organometallic Chemistry, Vol. 439, No. 2, 03.11.1992, p. 147-154.

Research output: Contribution to journal › Article › peer-review

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title = "Reactions of tetrachlorocyclopentadienyltantalum(V) derivatives with hexamethyldialuminium: Crystal and molecular structure of dichlorodimethylpentamethylcyclopentadienyltantalum(V)",

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) {\AA}, 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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T1 - Reactions of tetrachlorocyclopentadienyltantalum(V) derivatives with hexamethyldialuminium

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AU - Gómez, Manuel

AU - Jimenez, Gerardo

AU - Royo, Pascual

AU - Selas, José M.

AU - Raithby, Paul R.

PY - 1992/11/3

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N2 - 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.

AB - 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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Reactions of tetrachlorocyclopentadienyltantalum(V) derivatives with hexamethyldialuminium: Crystal and molecular structure of dichlorodimethylpentamethylcyclopentadienyltantalum(V)

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