title: Bis[1,3-bis-(2,4,6-trimethyl-phen-yl)-2,3-dihydro-1H-imidazol-2-yl-idene]dichloridodinitro-syltungsten(II) tetra-hydro-furan-d(8) monosolvate.
abstract: The mol-ecular structure of the title compound, [WCl(2)(NO)(2)(C(21)H(24)N(2))(2)]·C(4)D(8)O, displays a distorted octa-hedral arrangement around the W atom with two trans 1,3-bis-(2,4,6-trimethyl-phen-yl)imidazol-2-yl-idene (IMes) carbene ligands in axial positions. The four equatorial positions are occupied by nitrosyl and chloride ligands, which are trans to each other. The C(carbene)-W-C(carbene) bond angle of 173.44 (18)° and the Cl-W-N(nitros-yl) bond angles of 171.34 (11) and 171.32 (13)° deviate only slightly from linearity. The distortion comes from the nitrosyl and chloride ligands which are not fully coplanar since the two N atoms deviate from the WCl(2) plane by -0.279 (4) and 0.272 (4) Å, respectively. An inter-molecular C-H⋯O inter-action connects the organometallic mol-ecule and the tetra-hydro-furan-d(8) solvent mol-ecule.
authors.affiliation: Institut of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.
authors.forename: Javier
authors.initials: J
authors.lastname: Fraga-Hernández
authors.forename: Olivier
authors.initials: O
authors.lastname: Blacque
authors.forename: Heinz
authors.initials: H
authors.lastname: Berke