Polymorphism of the borophosphate anion in K(Fe,Al)[BP{sub 2}O{sub 8}(OH)] and Rb(Al, Fe)[BP{sub 2}O{sub 8}(OH)] crystal structures
- University of Chicago (United States)
The crystal structure of two borophosphates, Rb(Al,Fe)[BP{sub 2}O{sub 8}(OH)] (a = 9.381(6), b = 8.398(5), c = 9.579(6) A, {beta} = 102.605(10){sup o}, sp. gr. P2{sub 1}/c) and K(Fe,Al)[BP{sub 2}O{sub 8}(OH)] (a = 5.139(2), b = 8.065(4), c = 8.290(4)A, {alpha} = 86.841(8){sup o}, {beta} = 80.346(8){sup o}, {gamma} = 86.622(8){sup o}, sp. gr. P1-bar), obtained by hydrothermal synthesis in the AlCl{sub 3}: FeCl{sub 3}: K{sub 3}PO{sub 4}(Rb{sub 3}PO{sub 4}): B{sub 2}O{sub 3}: H{sub 2}O system has been established using X-ray diffraction (Bruker Smart diffractometer, T = 100 K). Hydrogen atoms are located and their coordinates and thermal parameters are refined. It is shown that the polymorphism of the [BP{sub 2}O{sub 8}(OH)]{sup 4-} borophosphate anion has a morphotropic nature and is related to the substitutions both in the cationic part of the structure and in the octahedral position of the anionic mixed framework. The synthesis of new isotypic triclinic compounds under hydrothermal conditions is predicted.
- OSTI ID:
- 22054098
- Journal Information:
- Crystallography Reports, Vol. 55, Issue 5; Other Information: Copyright (c) 2010 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydrothermal synthesis, crystal structure, and magnetic properties of a novel organo-templated iron(III) borophosphate: (C{sub 3}H{sub 12}N{sub 2})Fe{sup III} {sub 6}(H{sub 2}O){sub 4}[B{sub 4}P{sub 8}O{sub 32}(OH){sub 8}]
Na(H{sub 2}O)[Mn(H{sub 2}O){sub 2}(BP{sub 2}O{sub 8})]: Crystal structure refinement