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- Resonant x-ray diffraction as a tool to calculate mixed valence ratios: Application to Prussian Blue materials
- Lab Nacl Luz Sincrotron
- Universidade Estadual Paulista (UNESP)
- Univ Valencia
- 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.
- Applied Physics Letters. Melville: Amer Inst Physics, v. 92, n. 26, p. 3, 2008.
- American Institute of Physics (AIP)
- Acesso restrito
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