Bis[1,3-bis(2,4,6-trimethylphenyl)-2,3-dihydro-1H-imidazol-2-ylidene]dichloridodinitrosyltungsten(II) tetrahydrofuran-d8 monosolvate

Abstract

The molecular structure of the title compound, [WCl2(NO)2(C21H24N2)2]·C4D8O, displays a distorted octahedral arrangement around the W atom with two trans 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) carbene ligands in axial positions. The four equatorial positions are occupied by nitrosyl and chloride ligands, which are trans to each other. The Ccarbene—W—Ccarbene bond angle of 173.44 (18)° and the Cl—W—Nnitrosyl 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 WCl2 plane by −0.279 (4) and 0.272 (4) Å, respectively. An intermolecular C—H...O interaction connects the organometallic molecule and the tetrahydrofuran-d8 solvent molecule.