X-ray absorption spectroscopic studies of the Cr(IV) 2-ethyl-2- hydroxybutanoato(1-) complex

Chemical Communications

Volumn , Issue 23, 1999, Pages 2339-2340

  Levina, Aviva ^a   Foran, Garry J ^b   Lay, Peter A ^a  

^a UNIVERSITY OF SYDNEY   (Australia)

^b AUSTRALIAN NUCLEAR SCIENCE AND TECHNOLOGY ORGANISATION   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

CHROMIUM DERIVATIVE;

AQUEOUS SOLUTION; ARTICLE; CHEMICAL STRUCTURE; MODEL; OXIDATION; PH; X RAY SPECTROMETRY;

EID: 0033534141     PISSN: 13597345     EISSN: None     Source Type: Journal    
DOI: 10.1039/a907113j     Document Type: Article

References (27)

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5. For recent reviews of the Cr genotoxicity, see: M. Cieślak-Golonka, Polyhedron, 1996, 15, 3667; A. Kortenkamp, M. Casadevall, P. Da Cruz Fresco and R. O. J. Shayer, NATO ASI Ser., Ser. 2, 1997, 26, 15; D. M. Stearns and K. E. Wetterhahn, NATO ASI Ser., Ser. 2, 1997, 26, 55 and references therein.
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7. Abbreviations: ehba = 2-ethyl-2-hydroxybutanoate(2-); XAS = X-ray absorption spectra; XANES = X-ray absorption near-edge structure; XAFS = X-ray absorption fine structure; SS = single scattering; and MS = multiple scattering.
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10. 1,2
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14. Electronic supplementary information (ESI) is available (http:// www.rsc.org/suppdata/cc/1999/2339/), including: (i) tables showing the parameters of XAS experiments, the conditions, constraints and restraints applied to the XAFS fittings, the results of SS and MS XAFS calculations and the contributions of different scattering paths into the calculated MS XAFS; and (ii) figures showing typical kinetic data of Cr(IV) decomposition; XANES spectra of fresh and exposed Cr(IV) samples, the results of SS XAFS simulations for Cr(V/IV/III)-ehba and the structure of I refined by MS XAFS (11 pp.).
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16. +.
17. The use of low temperatures also maximises the MS contributions.
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26. 2] (T. Maschmeyer, G. Barr-David, P. A. Lay and A. F. Masters, to be submitted).
27. 1,2