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Issue 45, 2016
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Aerosol-assisted CVD of SnO from stannous alkoxide precursors

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Abstract

The stannous alkoxides [Sn(OR)2] [R = i-Pr, t-Bu, C(Et)Me2, CHPh2, CPh3] have been synthesised by reaction of Sn(NR′2)2 with two equivalents of HOR [R′ = Me, R = i-Pr; R′ = SiMe3, R = t-Bu, C(Et)Me2, CHPh2, CPh3]. Single crystal X-ray diffraction analysis of the bis(diphenylmethoxide) (4) and bis(triphenylmethoxide) (5) species have shown them to comprise three-coordinate Sn(II) centres through dimerisation in the solid state with the alkoxide units adopting transoid and cisoid configurations across the {Sn2O2} cores respectively. Thermogravimetric analysis indicates clean decomposition and some evidence of volatility at temperatures >200 °C for all three aliphatic alkoxides, whereas both the diphenyl- and triphenylmethoxide compounds provide higher decomposition temperatures and, for the triphenylmethoxide derivative, a residual mass consistent with the formation of a carbon-containing residue. The previously reported iso-propoxide (1) and tert-butoxide (2) derivatives have been utilised in toluene solution to deposit SnO thin films by aerosol-assisted chemical vapour deposition (AACVD) on glass at temperatures between 300 and 450 °C. While SnO is deposited under hot wall conditions as the only identifiable phase by p-XRD and Raman spectroscopy for both precursors, morphological analysis by SEM reveals inferior substrate coverage in comparison to previously reported ureide-based precursor systems.

Graphical abstract: Aerosol-assisted CVD of SnO from stannous alkoxide precursors

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Publication details

The article was received on 22 Jun 2016, accepted on 18 Oct 2016 and first published on 24 Oct 2016


Article type: Paper
DOI: 10.1039/C6DT02508K
Author version available: Download Author version (PDF)
Citation: Dalton Trans., 2016,45, 18252-18258
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    Aerosol-assisted CVD of SnO from stannous alkoxide precursors

    M. S. Hill, A. L. Johnson, J. P. Lowe, K. C. Molloy, J. D. Parish, T. Wildsmith and A. L. Kingsley, Dalton Trans., 2016, 45, 18252
    DOI: 10.1039/C6DT02508K

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