摘要:
Three reaction products of an addition reaction of titanium tetrachloride with aromatic nitrogen bases are presented. trans-Tetrachlorobis (3,4-dimethylpyridine) titanium, [TiCl4(C7H9N)(2)], (I), and trans-tetrachlorobis(4-methylpyridine)titanium, [TiCl4(C6H7N)(2)], (II), are both neutral complexes in which the central Ti atom is bonded to four Cl and two N atoms of two 3,4-dimethylpyridine and 4-methylpyridine ligands, respectively, resulting in a slightly distorted octahedral environment around the Ti atom. The methylpyridine ligands occupy axial positions, with the four chloro ligands in the equatorial plane. The ionic structure of bis(1-methylimidazolium) hexachlorotitanate(IV) pentachloro(N-methylimidazole-N-3)titanate(IV), (C4H7N2)(2)[TiCl5(C4H6N2)][TiCl6](0.5), (III), consists of a pentachloro(N-methylimidazole-N-3)titanate anion and half a [TiCl6](2-) complex anion, in both of which the Ti atom appears in a nearly perfect octahedral coordination sphere with two N-methylimidazolium cations as counter-ions.