Structural and electronic evolution of the As(OH)3 molecule in high temperature aqueous solutions: an x-ray absorption investigation |
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| Authors: | Testemale Denis Hazemann Jean-Louis Pokrovski Gleb S Joly Yves Roux Jacques Argoud Roger Geaymond Olivier |
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| Affiliation: | Laboratoire de Cristallographie CNRS-Grenoble, UPR5031, 25 avenue des Martyrs, BP 166 38042 Grenoble Cedex 09, France. denis.testemale@esrf.fr |
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| Abstract: | The geometrical and electronic structure of the arsenious acid molecule As(OH)(3) in aqueous solutions has been investigated by x-ray absorption spectroscopy (XAS) within extended x-ray absorption spectroscopy (EXAFS) and x-ray absorption near edge structure (XANES), using realistic first-principle calculations in the latter case. This investigation was performed on aqueous solutions of arsenious acid from ambient to supercritical conditions (P = 250 and 600 bars, T
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