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An X-ray absorption spectroscopic study at the mercury LIII edge on phenylmercury(II) oxygen species

Abstract
The X-ray absorption spectra of the reference and model compounds HgCl2, PhHgCl, PhHgOAc and [(PhHg)2OH][BF4].H2O have been analysed in both the XANES and EXAFS regions, and the technique was extended to determine the structures of (PhHg)2O, PhHgOH, and the basic salts PhHgOH.PhHgNO3 and PhHgOH.(PhHg)2SO4, which were previously structurally uncharacterised. Results indicate that (PhHg)2O is a molecular species with Hg-O-Hg 135°, while PhHgOH contains the [(PhHg)2OH]+ cation and is better formulated as [(PhHg)2OH]OH. The same cation is also featured in the two basic salts. Electrospray mass spectral studies of PhHgOH in aqueous solutions show that [PhHgOH2]+, [(PhHg)2OH]+ and [(PhHg)3O]+ co-exist in solution in a pH-dependent equilibrium.
Type
Journal Article
Type of thesis
Series
Citation
Jackson, W.J., Moen, A., Nicholson, B.K., Nicholson, D.G. & Porter, K. (2000). An X-ray absorption spectroscopic study at the mercury LIII edge on phenylmercury(II) oxygen species. J. Chem Soc., Dalton Trans, (4), 491-498.
Date
2000-01-01
Publisher
Royal Society of Chemistry
Degree
Supervisors
Rights
This is an authors version of an article published in the, Journal of the Chemical Society, Dalton Transactions, (c) The Royal Society of Chemistry 2000, at the Dalton Transactions webpage.