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Issue 41, 2016
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The effect of alkyl chain length on the structure of lead(ii) xanthates and their decomposition to PbS in melt reactions

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Abstract

A series of lead(II) alkylxanthates, [Pb(S2COR)2] (R = ethyl (1), n-propyl (2), n-butyl (3), n-hexyl (4) or n-octyl (5)) have been prepared and explored as single source precursors for use in melt reactions to form lead sulfide. X-ray single crystal structures of (2), (3) and (4) were used along with previously reported structures to investigate the influence of structure and chain length on the materials produced. The complexes were decomposed at 150, 175 or 200 °C forming PbS nanocrystals as confirmed by XRD and TEM. Analysis by SEM shows that the choice of precursor had an influence on nanocrystal size with longer alkyl chains resulting in smaller cubic nanocrystals. In addition to cubes, anisotropic growth was observed from decomposition of compound (5).

Graphical abstract: The effect of alkyl chain length on the structure of lead(ii) xanthates and their decomposition to PbS in melt reactions

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Supplementary files

Article information


Submitted
19 Jul 2016
Accepted
09 Sep 2016
First published
22 Sep 2016

Dalton Trans., 2016,45, 16345-16353
Article type
Paper

The effect of alkyl chain length on the structure of lead(II) xanthates and their decomposition to PbS in melt reactions

P. D. McNaughter, S. A. Saah, M. Akhtar, K. Abdulwahab, M. A. Malik, J. Raftery, J. A. M. Awudza and P. O'Brien, Dalton Trans., 2016, 45, 16345
DOI: 10.1039/C6DT02859D

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