Hydrothermal synthesis and structural characterisation of SrFe3(PO4)3(HPO4), an iron(III) phosphate containing FeO5 trigonal bipyramids and dimers of face-sharing FeO6 octahedra
- 1 January 1993
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 4,p. 577-580
- https://doi.org/10.1039/dt9930000577
Abstract
A new iron(III) phosphate, SrFe3(PO4)3(HPO4), has been synthesised hydrothermally and characterised by single-crystal X-ray diffraction and Mössbauer spectroscopy. The compound crystallises in the monoclinic space group P21/c, with a= 8.476(2), b= 7.298(1), c= 19.501(3)Å, β= 94.96(2)°, and Z= 4. The structure consists of channels parallel to the a axis where the Sr atoms are located. The framwork is composed of dimers of face-sharing FeO6 octahedra, discrete FeO5 trigonal bipyramids, phosphate tetrahedra, and hydrogenphosphate groups. Room-temperature Mössbauer spectroscopy confirms the presence of high-spin FeIII.Keywords
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