Vibrational Spectra and Molecular Association of Titanium Tetraisopropoxide

P D Moran; G A Bowmaker; R P Cooney; K S Finnie; John R Bartlett; J L Woolfrey

doi:10.1021/ic9709436

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Vibrational Spectra and Molecular Association of Titanium Tetraisopropoxide

Journal article

Peer reviewed

Vibrational Spectra and Molecular Association of Titanium Tetraisopropoxide

P D Moran, G A Bowmaker, R P Cooney, K S Finnie, John R Bartlett and J L Woolfrey

Inorganic Chemistry, Vol.37(11), pp.2741-2748

1998

DOI: https://doi.org/10.1021/ic9709436

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Abstract

Inorganic Chemistry

Chemical Engineering

Other Chemical Sciences

The Fourier transform-infrared (FT-IR) and polarized FT-Raman spectra of titanium tetraisopropoxide (tetraisopropoxytitanium, TPT), in pure and diluted forms, and of 2-propanol have been investigated in conjunction with previous assignments for related compounds to obtain a comprehensive assignment of the vibrational spectra. Evidence was obtained for the presence of both monomeric and associated species of TPT. The latter are formed by coordination expansion through bridging isopropoxy ligands. For both monomeric and associated TPT species, vibrational modes of isopropoxy ligands with v(C-O) mode character were coupled to vs(Ti-O) and vas(Ti-O) modes (interligand coupling). The symmetrically coupled ligand modes gave rise to intense, strongly polarized bands in the Raman spectrum. The antisymmetrically coupled ligand modes gave rise to strong bands in the IR spectrum at lower wavenumbers than the corresponding Raman bands. Molecular association of TPT produced negligible shifts in the ligand modes coupled to the vs(Ti-O) mode in the Raman spectrum. In contrast, the degeneracy of the strong ligand modes coupled to the vas(Ti-O) mode was lifted upon molecular association, yielding band shifts and splittings in the IR spectrum of neat TPT.

Details

Title: Vibrational Spectra and Molecular Association of Titanium Tetraisopropoxide
Authors: P D Moran (Author) - University of Auckland, New Zealand
G A Bowmaker (Author) - University of Auckland, New Zealand
R P Cooney (Author) - University of Auckland, New Zealand
K S Finnie (Author) - Australian Nuclear Science and Technology Organisation Materials Department
John R Bartlett (Author) - Australian Nuclear Science and Technology Organisation Materials Department
J L Woolfrey (Author) - Australian Nuclear Science and Technology Organisation Materials Department
Publication details: Inorganic Chemistry, Vol.37(11), pp.2741-2748
Publisher: American Chemical Society
Date published: 1998
DOI: 10.1021/ic9709436
ISSN: 0020-1669
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99448813502621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Inorganic & Nuclear