Resonant x-ray diffraction as a tool to calculate mixed valence ratios:: Application to Prussian Blue materials

被引：16

作者：

Ferreira, Fabio Furlan ^{[1
]}

Bueno, Paulo R. ^{[2
]}

Setti, Grazielle O. ^{[2
]}

Gimenez-Romero, David ^{[3
]}

Garcia-Jareno, Jose Juan ^{[3
]}

Vicente, Francisco ^{[3
]}

机构：

[1] Lab Nacl Luz Sincrotron, BR-13083970 Campinas, SP, Brazil

[2] Univ Estadual Paulista, Inst Quim, BR-14800900 Sao Paulo, Brazil

[3] Univ Valencia, Dept Quim Fis, E-46100 Valencia, Spain

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 26期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1063/1.2952457

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An approach is proposed here to calculate mixed valence ratios in molecular compounds. Synchrotron x-ray powder diffraction experiments were conducted to determine the Fe+3/Fe+2 ratio in Prussian Blue compounds, which were elected as an example of the use of this approach. As a result, a resonant x-ray diffraction measurement provided direct evidence that the vacant [Fe(CN)(6)] group was randomly absent from similar to 31% of the structure, which was indicated by structural differences caused by variations in the anomalous dispersion term. These findings are very important for a deeper understanding of the changes occurring in properties during in situ compositional variations. (c) 2008 American Institute of Physics.

引用

页数：3

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