Received 11 October 2012
The title dimeric zirconium complex, [Zr2(C20H24)2S2]·C7H8, was obtained from the reaction of (ebthi)Zr(2-Me3Si-C2-SiMe3) [ebthi is rac-1,2-bis(5-4,5,6,7-tetrahydroinden-1-yl)ethane] and S=C=N-ada (ada = adamantan-1-yl) along with the formation of the isonitrile CN-ada. Each ZrIV atom is coordinated by the sterically hindered ebthi ligand and two -sulfide ligands in a strongly distorted tetrahedral geometry. The [ZrS]2 unit is almost planar (mean deviation from the best plane of the four atoms = 0.025 Å). A -CH2-CH2- group in one ebthi ligand was disordered over two sites, with refined occupancy factors of 0.551 (6) and 0.449 (6). The asymmetric unit also contains a toluene solvent molecule.
For -sulfide-bridged [Cp2M(-S)]2 metallocenes (Cp = C5H5), see: for M = Zr, Bottomley et al. (1986); Hey et al. (1987); for M = Nb, Skripkin et al. (1984). Furthermore, for [Cp'2Th(-S)]2 (Cp' = 1,2,4-tri-tert-butylcyclopentadienyl), see: Ren et al. (2011); for [Cp'2Ta(-S)]2 (Cp' = C5H4Me), see: Winkler et al. (1998). The starting alkyne complex (ebthi)Zr(2-Me3Si-C2-SiMe3) was described by Lefeber et al. (1996). For -sulfide complexes with a further bridged ligand Cp'M(-S)2LMCp', L = 2-10-fulvalene, Cp' = Cp, M = Zr, see: Wielstra et al. (1990), L = 2-bis(5-cyclopentadienyl)dimethylsilane, Cp' = Cp, M = Zr, see: Cacciola et al. (1992), L = 2-bis(5-cyclopentadienyl)dimethylsilane, Cp' = Cp* (C5Me5), M = Zr, see: Burstynowicz & Petersen (1995).
Data collection: X-AREA (Stoe & Cie, 2005); cell refinement: X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PK2450 ).
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