STRUCTURE OF TETRAPHENYLPHOSPHONIUM L-3-OXOPENTANE]COBALT(III))TETRANITRATOCERIUM(III) DICHLOROMETHANE

Bis(tetraphenylphosphonium) trato-1kappa4O,1kappa4O'-cerate(III)cobalt ate(III) dichloromethane, [P(C6H5)4]2[Co(C15H24N2O5){Ce(NO3)4}].-CH2Cl 2, M(r) = 1523.2, monoclinic, P2(1)/c (C2h5), a = 22.168 (5), b = 13.2 66 (2), c = 24.330 (6) angstrom, beta = 105.17 (2)-degrees, V = 6905 ( 3) angstrom3, Z = 4, D(x) = 1.465 Mg m-3, lambda(Mo Kalpha) = 0.71073 angstrom, mu = 1.09 mm-1, T = 293 K, F(000) = 3108, R = 0.036, wR = 0. 045 for 8166 independent reflections having 2theta(Mo Kalpha) < 50.7-d egrees and I > 3sigma(I). The title compound is a dinuclear complex in which a planar cobalt(III) complex is linked via secondary coordinati on to a cerium(III) center. The Ce(III) atom has four bidentate nitrat o ligands and is further bridged to the bidentate planar cobalt(III) c omplex ligand which is coordinated through two alkoxide O atoms. The c obalt-cerium non-bonded distance is 3.449 (1) angstrom. The cobalt(III ) complex ligand remains planar on coordination to the Ce(III) atom.