A structural comparison of the two polymorphs of Sr2Co2O5 by cobalt K-edge extended X-ray absorption fine structure spectroscopy
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 2359-2363
- https://doi.org/10.1039/dt9870002359
Abstract
The high- and low-temperature forms of Sr2Co2O5 have been studied by EXAFS spectroscopy. Evidence is presented to support the belief that the high-temperature phase is isostructural with Sr2Fe2O5. Furthermore, the observation of a Co–Co distance of 2.46 Å in the low-temperature form is the first direct evidence for the existence of face-sharing CoO6 octahedra in that phase.Keywords
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