STRUCTURE OF THE MU-AZIDO-DICHLORO(ETA-5-METHYLCYCLOPENTADIENYL)TITANIUM(IV) DIMER

Di-mu-azido-N:N-bis[dichloro(eta5-methyl-cyclopentadienyl)titanium(IV)], [TiCl2(N3)(C6H7)]2, M(r) = 479.90, monoclinic, P2(1)c, a = 7.101 (2), b = 13.920 (3), c = 19.050 (4) angstrom, beta = 98.47 (2)-degrees, V = 1863 (5) angstrom3, Z = 4, D(x) = 1.71 gcm-3, lambda(Mo Kalpha) = 0.71073 angstrom, mu = 14.4 cm-1, F(000) = 960, T = 294 (1) K, R = 0.048.for 2018 unique reflections with F(o)2 > 3.0sigma(F(o)2). The solid-state structure of the title compound consists of two (CH3C5H4)TiCl2(N3) units that form a dimer through azido bridges; both azido ligands are 1,1-mu-N-bonded to each Ti atom. The coordination sphere around Ti is distorted square pyramidal with two N and two Cl atoms describing the base and C* (center of the cyclopentadienyl ring) at the apex of the polyhedron with C*-Ti-L angles (L = Cl or N) of 110.6-114.4-degrees. Some rotational disorder in the cyclopentadienyl rings causes large thermal ellipsoids and a wide range of C-C bond distances in the rings.