A centrosymmetric triply alkoxo-bridged titanium-μ₂-O-zirconium tetranuclear complex: [TiZr(μ₂-O,μ₂-O′-methyliminodiethanolate)(μ₂-O-n-propanolate)₂(n-propanolate)_2.7(isopropanolate)_1.3]₂

Abstract

The centrosymmetric tetranuclear title compound, bis­(methyl­imino­diethano­lato)­dodecapropanolatodititaniumdizirconium, [Ti2Zr2(C3H7O)12(C5H11NO2)2], has a zigzag TiZr2Ti arrangement including novel triple‐oxo Ti⋯Zr bridges. The methyl­imino­diethano­late ligand is bound to the zirconium in a meridional configuration, with the ethano­late O atoms bridging both the Ti⋯Zr and Zr⋯Zr centres. Two n‐propanolate O atoms provide the other two Ti⋯Zr 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.

Development of microporous ceramic membranes in the system TiO2/ZrO2

“…This could be an indication of the existence of Ti-O-Zr bonds. There are some papers which support these assumptions [20][21][22]. Starting from a mixture of zirconium isopropoxide, titanium isopropoxide and different organic additives, the formation of heterometallic zirconium titanium precursors with different structures was shown.…”

Molecular design approach to a stable heterometallic zirconium–titanium alkoxide – potential precursor of mixed-oxide ceramics

“…The in literature available heterometallic titanium-zirconium precursors [20,21] are considered less suitable compared to the one presented in this paper. They have (different) alkoxide groups attached to both the zirconium and titanium, what again can be a disadvantage due to the different reactivities.…”

Structural diversity in transition metal-doped titanium oxo-alkoxy complexes: Potential sol-gel intermediates for doped titania nanoparticles and complex titanates

“…Several structures were reported by Kemmitt's group in the early 2000s [97,98] , and DEA, where the two titanium centers where connected to the nonacoordinated Zr 4+ via bridging DEA ligands [101]. In a subsequent publication, this complex was successfully utilized as a SSP for production of essentially pure microporous srilankite (ZrTi 2 O 6 ) (Fig.…”