Influence of the Phosphonate Ligand on the Structure of Phosphonate-Substituted Titanium Oxo Clusters
Article first published online: 2 OCT 2013
© 2013 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
European Journal of Inorganic Chemistry
Volume 2013, Issue 33, pages 5790–5796, November 2013
How to Cite
Czakler, M., Artner, C. and Schubert, U. (2013), Influence of the Phosphonate Ligand on the Structure of Phosphonate-Substituted Titanium Oxo Clusters. Eur. J. Inorg. Chem., 2013: 5790–5796. doi: 10.1002/ejic.201300859
- Issue published online: 12 NOV 2013
- Article first published online: 2 OCT 2013
- Manuscript Received: 7 JUL 2013
- Funded Access
- Cluster compounds
The reaction of titanium isopropoxide, Ti(OiPr)4, with bis(trimethylsilyl) phosphonates has led to structures containingTi3O units [= Ti3(μ3-O)(μ2-OiPr)3(OiPr)3(O3PR)3] as the basic structural motif. This unit can be capped by a single Ti(OiPr)2L group (L = neutral ligand) through phosphonate bridges (for R = xylyl), or sandwich-like structures can be formed with two Ti3O units bonded to a central Ti atom (for R = CH2CH2CH2Cl or benzyl). For R = allyl or ethyl, dimeric clusters were formed in which two Ti4 cluster units are bridged by isopropyl phosphonate ligands. For comparison, Ti(OiPr)4 was also treated with allylphosphonic acid to yield a Ti4 cluster. The reaction of Ti(OiPr)4 with the bulky bis(trimethylsilyl) 2-naphthylmethyphosphonate did not yield an oxo cluster but instead the phosphonate-substituted titanium alkoxide Ti4(OiPr)8(O3PCH2naphthyl)4.