Persson, Ingmar
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
Abstract
The structure of the solvated mercury(I) ion in solvents such as water, methanol, dimethylsulfoxide, N,N'-dimethylpropyleneurea, acetonitrile and pyridine solution has been studied by means of EXAFS and/or large angle X-ray scattering (LAXS). Raman spectroscopy has been used for the determination of the Hg-Hg stretching frequencies. The Hg-Hg bond length increases with increasing solvating ability of the solvent, while the stretching frequency appears to be almost invariant. The results of quantum chemical calculations indicate a significant influence on the Hg-Hg bond from solvation. The structure of solid anhydrous mercury(l) trifluoromethanesulfonate, Hg-2(CF3SO3)(2) (1), has been determined by powder diffraction methods. The structure comprises of discrete molecules, where each mercury binds to an oxygen atom in the anion, forming an almost linear O-Hg-Hg-O entity; the Hg-Hg-O angle is 173degrees and the Hg-Hg and Hg-O bond lengths are 2.486(6) and 2.099(22) Angstrom, respectively. (C) 2004 Elsevier B.V. All rights reserved.
Keywords
EXAFS; large angle X-ray scattering; powder diffraction; ab initio calculations; solvation models
Published in
Inorganica Chimica Acta
2004, volume: 357, number: 9, pages: 2624-2634
Publisher: ELSEVIER SCIENCE SA
SLU Authors
UKÄ Subject classification
Inorganic Chemistry
Publication identifier
- DOI: https://doi.org/10.1016/j.ica.2004.03.010
Permanent link to this page (URI)
https://res.slu.se/id/publ/2913