title: μ(2)-m-Xylylenebis(salicylaldiminato)-bis-(η(4)-1,5-cyclo-octa-diene)dirhodium(I) dichloro-methane solvate.
abstract: In the title solvate, [Rh(2)(C(22)H(18)N(2)O(2))(C(8)H(12))(2)]·CH(2)Cl(2), each organometallic mol-ecule is composed of two Rh(I) cations, the tetra-dentate dianion α,α'-bis-(salicylaldiminato)-m-xylene and two 1,5-cyclo-octa-diene (COD) ligands. Each Rh(I) atom is coordinated by one O atom [Rh-O = 2.044 (2) and 2.026 (2) Å], one N atom [Rh-N = 2.083 (2) and 2.090 (2) Å], and one COD ligand via two η(2)-bonds, each directed toward the mid-point of a C=C bond (Cg): Rh-Cg = 2.007 (2), 2.013 (2), 2.000 (2) and 2.021 (2) Å. Each Rh(I) atom has a quasi-square-planar coordination geometry, with average r.m.s. deviations of 0.159 (1) and 0.204 (1) Å from the mean planes defined by Rh and the termini of its four coordinating bonds. The two COD ligands have quasi-C(2) symmetry, twisted from ideal C(2v) symmetry by 30.0 (3) and -33.1 (3)°, and are quasi-enanti-omers of one another. The intra-molecular Rh⋯Rh distance of 5.9432 (3) Å suggests that there is no direct metal-metal inter-action.
authors.affiliation: Department of Chemistry, Louisiana State University, Baton Rouge LA 70803-1804  USA.
authors.forename: Stacie
authors.initials: S
authors.lastname: Gregory
authors.forename: Ravi K
authors.initials: RK
authors.lastname: Laxman
authors.forename: Frank R
authors.initials: FR
authors.lastname: Fronczek
authors.forename: Andrew W
authors.initials: AW
authors.lastname: Maverick
authors.forename: Steven F
authors.initials: SF
authors.lastname: Watkins