Gueorguieva Petia G, Laneman Scott A, Stanley George G, Fronczek Frank R, Watkins Steven F
Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803-1804, USA.
Acta Crystallogr Sect E Struct Rep Online. 2012 Nov 1;68(Pt 11):m1408-9. doi: 10.1107/S1600536812043528. Epub 2012 Oct 27.
The dirhodium complex, [Rh(2)(C(18)H(15)P)(4)(CO)(2)]·2(CH(3))(2)CO, has crystallographic twofold symmetry and the Rh-Rh distance is 2.6266 (8) Å. The four atoms proximate to each Rh atom [Rh-P = 2.3222 (7) and 2.3283 (8) Å, and Rh-C = 1.961 (3) and 2.045 (3) Å] form a distorted tetra-hedron with large deviations from the putative tetra-hedral angles [r.m.s. deviation = 23 (1)°]. The six angles more closely approximate those of a trigonal bipyramid [r.m.s. deviation = 14 (1)°] with one missing equatorial ligand. The two bridging carbonyl ligands are much more linearly coordinated to one Rh [Rh-C O = 151.0 (2)°] than to the other [127.0 (2)°], and the two Rh(2)CO planes form a dihedral angle of 45.43 (5)°. The two acetone solvent mol-ecules are disordered, and their estimated scattering contribution was subtracted from the observed diffraction data using the SQUEEZE routine in PLATON [Spek (2009 ▶). Acta Cryst.D65, 148-155].
二铑配合物[Rh₂(C₁₈H₁₅P)₄(CO)₂]·2(CH₃)₂CO具有晶体学二重对称性，Rh-Rh间距为2.6266 (8) Å。每个Rh原子附近的四个原子[Rh-P = 2.3222 (7) 和2.3283 (8) Å，Rh-C = 1.961 (3) 和2.045 (3) Å]形成一个扭曲的四面体，与假定的四面体角有较大偏差[r.m.s.偏差 = 23 (1)°]。六个角更接近缺少一个赤道配体的三角双锥的角[r.m.s.偏差 = 14 (1)°]。两个桥连羰基配体与一个Rh的配位更接近线性[Rh-C O = 151.0 (2)°]，而与另一个Rh的配位则不然[127.0 (2)°]，并且两个Rh₂CO平面形成的二面角为45.43 (5)°。两个丙酮溶剂分子是无序的，使用PLATON中的SQUEEZE程序[Spek (2009 ▶). Acta Cryst.D65, 148 - 155]从观察到的衍射数据中减去了它们估计的散射贡献。
