Acta Cryst. (2002). E58, m636-m638  [ doi:10.1107/S1600536802018482 ]

A centrosymmetric triply alkoxo-bridged titanium-₂-O-zirconium tetranuclear complex: [TiZr(₂-O,₂-O'-methyliminodiethanolate)(₂-O-n-propanolate)₂(n-propanolate)_2.7(isopropanolate)_1.3]₂

G. J. Gainsford, N. Al-Salim and T. Kemmitt

Abstract: The centrosymmetric tetranuclear title compound, bis(methyliminodiethanolato)dodecapropanolatodititaniumdizirconium, [Ti₂Zr₂(C₃H₇O)₁₂(C₅H₁₁NO₂)₂], has a zigzag TiZr₂Ti arrangement including novel triple-oxo TiZr bridges. The methyliminodiethanolate ligand is bound to the zirconium in a meridional configuration, with the ethanolate O atoms bridging both the TiZr and ZrZr centres. Two n-propanolate O atoms provide the other two TiZr bridges. The remaining propanolate ligands are attached to either Zr or Ti, completing seven- and six-coordination, respectively. The distorted pentagonal bypyramidal [ZrO₅N₂] units edge-share with each other and face-share with the distorted octahedral [TiO₆] units. As well as some conventional conformational disorder involving alternative carbon-chain conformations, there is some iso- and n-propanolate chemical disorder around the Ti atoms.

Online 18 October 2002

Copyright © International Union of Crystallography
IUCr Webmaster