Double-channel excitation in the X-ray absorption spectrum of Fe3+ water solutions

被引：50

作者：

Benfatto, M

Solera, JA

Ruiz, JG ^{[1
]}

Chaboy, J

机构：

[1] Univ Zaragoza, Inst Ciencia Mat Aragon, CSIC, Fac Ciencias,Dept Fis Mat Condensada, Zaragoza 50009, Spain

[2] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

来源：

CHEMICAL PHYSICS | 2002年 / 282卷 / 03期

关键词：

D O I：

10.1016/S0301-0104(02)00728-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present a detailed analysis of the X-ray absorption near edge structure (XANES) spectra of [Fe(H2O)(6)](2+) and [Fe(H2O)(6)](3+) complexes in solution. While the Fe2+ spectra are well accounted for by a one-electron multiple-scattering theory, Fe3+ spectra present additional features that can only be accounted by two excitation channels using the sudden limit of the multichannel multiple-scattering theory. Other possible explanations based on possible structural changes of the local environment are ruled out on the basis of the new MXAN fitting procedure and the experimental finding for which the pH value does not influence the XANES spectra. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：441 / 450

页数：10

共 30 条

[1]

[Anonymous], 1986, J PHYS, DOI DOI 10.1051/jphyscol:1986807

[2] MULTIPLE-SCATTERING REGIME AND HIGHER-ORDER CORRELATIONS IN X-RAY-ABSORPTION SPECTRA OF LIQUID SOLUTIONS [J].