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


Autoria(s): Ferreira, Fabio Furlan; Bueno, Paulo Roberto; Setti, Grazielle O.; Gimenez-Romero, David; Garcia-Jareno, Jose Juan; Vicente, Francisco
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

30/06/2008

Resumo

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.

Formato

3

Identificador

http://dx.doi.org/10.1063/1.2952457

Applied Physics Letters. Melville: Amer Inst Physics, v. 92, n. 26, p. 3, 2008.

0003-6951

http://hdl.handle.net/11449/42390

10.1063/1.2952457

WOS:000257424500080

WOS000257424500080.pdf

Idioma(s)

eng

Publicador

American Institute of Physics (AIP)

Relação

Applied Physics Letters

Direitos

closedAccess

Tipo

info:eu-repo/semantics/article