Specific features of the crystal structure of erbium polyphosphate of the structural type C
- Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry (Russian Federation)
Erbium polyphosphate Er(PO{sub 3}){sub 3} is synthesized at a temperature of 270 deg. C from a polyphosphoric acid melt containing cerium, erbium, and phosphorus in the atomic ratio Cs: Er: P = 5: 1: 15. The crystal structure of the Er(PO{sub 3}){sub 3} polyphosphate synthesized is determined. The framework structure of the Er(PO{sub 3}){sub 3} polyphosphate is built up of infinite polyphosphate chains and ErO{sub 6} octahedra bonded to these chains. The structure is a derivative of the structural type C, in which a large number of trivalent metal polyphosphates crystallize. The main distinguishing feature of this structural type is an increase in the parameter b of the monoclinic unit cell of the Er(PO{sub 3}){sub 3} compound by a factor of 11 (a = 10.040 A, b = 73.482 A, c = 11.268 A, {beta} = 97.28 deg., space group Ia)
- OSTI ID:
- 21090950
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 2 Vol. 52; ISSN CYSTE3; ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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