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Synthesis, AACVD and X-ray crystallographic structures of group 13 monoalkoxometallanes

Knapp, CE; Pemberton, L; Carmalt, CJ; Pugh, D; McMillan, PF; Barnett, SA; Tocher, DA; (2010) Synthesis, AACVD and X-ray crystallographic structures of group 13 monoalkoxometallanes. Main Group Chemistry , 9 (1-2) pp. 31-40. 10.3233/MGC-2010-0002.

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Abstract

The group 13 monoalkoxometallanes [Me2Ga(OC(CH3) 2CH2OMe)]2 (1) and [Me 2In(OCH(CH3)CH2OMe)]2 (2), incorporating donor functionalised alkoxides, were synthesised from the reaction of GaMe3 or InMe3 with ROH (R=C(CH3) 2CH2OMe (1); R=CH(CH3)CH2OMe (2)) in toluene. X-ray crystallography showed that both compounds adopt dimeric structures with a planar M2O2 ring, and each group 13 atom is coordinated in a distorted trigonal bipyramidal geometry. The AACVD reaction of GaMe3 and ROH (R =C(CH3)2CH2OMe, CH2CH2OMe, CH2CH2NMe2) resulted in the formation of thin films of Ga2O3 on glass substrates at 450°C. The gallium oxide films were analyzed by scanning electron microscopy, X-ray powder diffraction, energy dispersive analysis of X-rays, wavelength dispersive analysis of X-rays and X-ray photoelectron spectroscopy. This CVD technique offers a rapid, convenient route to Ga 2O3, which involves the in situ formation of dimethylgallium alkoxides, of the type [Me2Ga(μ-OR)]2 similar to compound 1. © 2010 - IOS Press and the authors. All rights reserved.

Type: Article
Title: Synthesis, AACVD and X-ray crystallographic structures of group 13 monoalkoxometallanes
DOI: 10.3233/MGC-2010-0002
Keywords: CVD, Gallium alkoxide, indium alkoxide, synthesis
UCL classification: UCL > School of BEAMS > Faculty of Maths and Physical Sciences
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/679850
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