Gregory Stacie, Laxman Ravi K, Fronczek Frank R, Maverick Andrew W, Watkins Steven F
Department of Chemistry, Louisiana State University, Baton Rouge LA 70803-1804 USA.
Acta Crystallogr Sect E Struct Rep Online. 2012 Oct 1;68(Pt 10):m1316-7. doi: 10.1107/S1600536812040603. Epub 2012 Sep 29.
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.
在标题溶剂化物[Rh₂(C₂₂H₁₈N₂O₂)(C₈H₁₂)₂]·CH₂Cl₂中，每个有机金属分子由两个Rh(I)阳离子、四齿二价阴离子α,α'-双-(水杨醛亚胺基)-间二甲苯和两个1,5-环辛二烯(COD)配体组成。每个Rh(I)原子由一个O原子[Rh - O = 2.044 (2) 和2.026 (2) Å]、一个N原子[Rh - N = 2.083 (2) 和2.090 (2) Å]以及一个通过两个η²-键与一个COD配体配位，每个η²-键指向C = C键(Cg)的中点：Rh - Cg = 2.007 (2)、2.013 (2)、2.000 (2) 和2.021 (2) Å。每个Rh(I)原子具有近似正方形平面配位几何结构，相对于由Rh及其四个配位键的末端所定义的平均平面，平均均方根偏差分别为0.159 (1) 和0.204 (1) Å。两个COD配体具有近似C₂对称性，相对于理想的C₂v对称性扭曲了30.0 (3) 和 - 33.1 (3)°，并且彼此为准对映体。分子内Rh⋯Rh距离为5.9432 (3) Å，表明不存在直接的金属 - 金属相互作用。
