Evidence for dissolved polymeric mercury(II)-sulfur complexes?

John Charnock; Anthony M T Bell; John M. Charnock; George R. Helz; Alistair R. Lennie; Francis R. Livens; J. Frederick W Mosselmans; Richard A D Pattrick; David J. Vaughan

doi:10.1016/j.chemgeo.2007.05.013

Evidence for dissolved polymeric mercury(II)-sulfur complexes?

John Charnock, Anthony M T Bell, John M. Charnock, George R. Helz, Alistair R. Lennie, Francis R. Livens, J. Frederick W Mosselmans, Richard A D Pattrick, David J. Vaughan

Research output: Contribution to journal › Article › peer-review

Abstract

We have examined alkaline sulfidic (0.5-0.003 M Na2S), aqueous solutions of Hg(II)-S complexes (4-370 ppm Hg(II)) by Hg LIII edge EXAFS spectroscopy at 296, 348 and 423 K. Data were collected using the ID26 High Brilliance X-ray Spectroscopy beamline at the ESRF. Analysis of these EXAFS spectra shows Hg coordinated by two S atoms at 2.30 Å; multiple scattering analyses reveal a linear [-S-Hg-S-] arrangement in the solution complex. These results are in agreement with earlier results on more concentrated solutions of these complexes. There is also evidence in the data for polynuclear sulfide complexes at 296 K and 348 K for samples with the lowest sulfide concentrations although this is complicated by multiple scattering effects. © 2007 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	122-127
Number of pages	5
Journal	Chemical Geology
Volume	243
Issue number	1-2
DOIs	https://doi.org/10.1016/j.chemgeo.2007.05.013
Publication status	Published - 30 Aug 2007

Keywords

Complexes
EXAFS
Mercury
Spectroscopic
Sulfide
Synchrotron radiation

Access to Document

10.1016/j.chemgeo.2007.05.013

http://://000249141300008

Cite this

@article{d67230b7f27441e092d69bb5b00a4f88,

title = "Evidence for dissolved polymeric mercury(II)-sulfur complexes?",

abstract = "We have examined alkaline sulfidic (0.5-0.003 M Na2S), aqueous solutions of Hg(II)-S complexes (4-370 ppm Hg(II)) by Hg LIII edge EXAFS spectroscopy at 296, 348 and 423 K. Data were collected using the ID26 High Brilliance X-ray Spectroscopy beamline at the ESRF. Analysis of these EXAFS spectra shows Hg coordinated by two S atoms at 2.30 {\AA}; multiple scattering analyses reveal a linear [-S-Hg-S-] arrangement in the solution complex. These results are in agreement with earlier results on more concentrated solutions of these complexes. There is also evidence in the data for polynuclear sulfide complexes at 296 K and 348 K for samples with the lowest sulfide concentrations although this is complicated by multiple scattering effects. {\textcopyright} 2007 Elsevier B.V. All rights reserved.",

keywords = "Complexes, EXAFS, Mercury, Spectroscopic, Sulfide, Synchrotron radiation",

author = "John Charnock and Bell, {Anthony M T} and Charnock, {John M.} and Helz, {George R.} and Lennie, {Alistair R.} and Livens, {Francis R.} and Mosselmans, {J. Frederick W} and Pattrick, {Richard A D} and Vaughan, {David J.}",

year = "2007",

month = aug,

day = "30",

doi = "10.1016/j.chemgeo.2007.05.013",

language = "English",

volume = "243",

pages = "122--127",

journal = "Chemical Geology",

issn = "0009-2541",