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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Date
2016
Authors
McNaughter, P.D.
Saah, S.A.
Akhtar, M.
Abdulwahab, K.O.
Malik, M.A.
Raftery, J.
Awudza, J.A.
O’Brien, P.
Journal Title
Journal ISSN
Volume Title
Publisher
The Royal Society of Chemistry/Dalton Transactions
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.
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Keywords
Research Subject Categories::NATURAL SCIENCES::Chemistry::Inorganic chemistry::Solid state chemistry
Citation
McNaughter, P. D., Saah, S. A., Akhtar, M., Abdulwahab, K., Malik, M. A., Raftery, J., ... & O'Brien, P. (2016). The effect of alkyl chain length on the structure of lead (II) xanthates and their decomposition to PbS in melt reactions. Dalton Transactions, 45(41), 16345-16353.