title: Bis(η-cyclo-penta-dien-yl)bis-(2,4,6-tri-methyl-phenyl-tellurolato)zirconium(IV).
abstract: The structure of the title compound, [Zr(C(5)H(5))(2)(C(9)H(11)Te)(2)], consists of a zirconium(IV) centre bonded to two η(5)-coord-inated cyclo-penta-dienyl groups and two mesityltellurolate ligands; the discrete mol-ecule has crystallographic twofold rotation symmetry. The structural parameters compared with those in [(η(5)-Me(5)Cp)(2)Zr(TePh)(2)] [Howard, Trnka & Parkin (1995 ▶). Inorg. Chem.34, 5900-5909] show that the greater steric demands of the bulky mesityl substituents are accommodated by widening Te-Zr-Te (∼8°) and by more acute Zr-Te-C (∼5°) angles, although the Zr-Te distances are essentially the same. The crystal studied exhibited some inversion twinning.
authors.affiliation: School of Chemistry, University of Southampton, Southampton SO17 1BJ, England.
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Hector
authors.forename: William
authors.initials: W
authors.lastname: Levason
authors.forename: Gillian
authors.initials: G
authors.lastname: Reid
authors.forename: Stuart D
authors.initials: SD
authors.lastname: Reid
authors.forename: Michael
authors.initials: M
authors.lastname: Webster