UNSPECIFIED. (1994) FORMATION OF CATIONIC MONOCYCLOPENTADIENYL METAL(IV) COMPOUNDS FOLLOWING HALIDE ABSTRACTION FROM [M(ETA-5-C5H5)-CL3(MECN)2] (M=ZR OR HF) - CRYSTAL AND MOLECULAR-STRUCTURE OF [HF(ETA-5-C5H5)(MECN)6][SBCL6]3-CENTER-DOT-CH2CL2. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS (22). pp. 3285-3290. ISSN 0300-9246

Full text not available from this repository.

Abstract

Treatment of [M(eta5-C5H5)Cl3(MeCN)2] (M = Zr or Hf) with antimony(V) chloride in acetonitrile solution provides a convenient route to cationic monocyclopentadienyl metal(IV) species following halide abstraction. The hexachloroantimonate(V) salts [M(eta5-C5H5)Cl2(MeCN)3][SbCl6], [M(eta5-C5H5)Cl(MeCN)4][SbCl6]2 and [M(eta5-C5H5)(MeCN)6][SbCl6]3 have been isolated and characterised by micro-analytical and spectroscopic (IR, H-1 NMR) data. The presence of geometrical isomers in solution is discussed. The structure of [Hf(eta5-C5H5)(MeCN)6][SbCl6]3.CH2Cl2 has been established by X-ray crystallographic studies: monoclinic, space group P2(1)/n, a = 22.627(7), b = 18.956(8), c = 22.699(7) angstrom, beta = 98.80(7)-degrees. The structure shows two independent [Hf(eta5-C5H5)(MeCN)6]3+ cations, six [SbCl6]-anions and two lattice solvent (CH2Cl2) molecules. The two cations show equivalent dimensions within experimental error and feature a seven-co-ordinate, pentagonal-bipyramidal metal geometry in which the cyclopentadienyl ligand occupies an axial position: Hf-C(ring) 2.38(2)-2.53(2) (molecule 1) and 2.43(2)-2.51 (2) angstrom (molecule 2).

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry
Journal or Publication Title:	JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
Publisher:	ROYAL SOC CHEMISTRY
ISSN:	0300-9246
Date:	21 November 1994
Number:	22
Number of Pages:	6
Page Range:	pp. 3285-3290
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/20165

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item