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On the bonding behaviour of transition metal ions in inorganic solids - Optical and EPR spectroscopic studies on anhydrous phosphates and phosphate-silicates of Ti3+

Citation

Glaum, R and Hitchman, MA, On the bonding behaviour of transition metal ions in inorganic solids - Optical and EPR spectroscopic studies on anhydrous phosphates and phosphate-silicates of Ti3+, Australian Journal of Chemistry, 49, (11) pp. 1221-1228. ISSN 0004-9425 (1996) [Refereed Article]

Abstract

TiPO4 (green), Ti4P6Si2O25 (purple-red) and TiP3O9 (blue) show a remarkable variety of colours. We compare the results of optical and e.p.r. spectroscopic measurements on these compounds with d-electron energy levels for Ti3+ obtained by using the angular-overlap model. Thus, a unified set of angular-overlap model bonding parameters for the description of the spectroscopic behaviour of Ti3+ in anhydrous phosphates can be derived. The σ-interaction was assumed to depend on the nth power of the Ti-O bond distance, and it was found that optimum agreement with experiment occurred with n = -4.5. For the correct reproduction of the experimentally observed ground-state splittings it is necessary to allow for anisotropic π-bonding interactions between titanium and the oxygen ligands linking Ti-O coordination polyhedra.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Inorganic Chemistry
Research Field:Transition Metal Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Hitchman, MA (Dr Michael Hitchman)
ID Code:8617
Year Published:1996
Web of Science® Times Cited:7
Deposited By:Chemistry
Deposited On:1996-08-01
Last Modified:2011-08-19
Downloads:0

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