Synthesis and crystal structure of indium arsenate and phosphate dihydrates with variscite and metavariscite structure types
作者： XueJiao Tang , Maria J. Gentiletti , Abdessadek Lachgar
关键词: Monoclinic crystal system 、 Hydrothermal synthesis 、 Infrared spectroscopy 、 Chemistry 、 Crystallography 、 Crystal structure 、 Hydrate 、 Hydrogen bond 、 Orthorhombic crystal system 、 Octahedron
摘要: The hydrothermal synthesis, crystal structure analysis, and spectroscopic studies of InPO4·2H2O (1) InAsO4·2H2O (2) are reported. Compound 1 is isomorphic with metavariscite: monoclinic P21/n (No. 14), a = 5.4551(3) A, b 10.2293(4) c 8.8861(3) β 91.489(4)°, Z 4, compound 2 variscite: orthorhombic Pbca 61), 10.478(1) 9.0998(8) 10.345(1) 8. Their three-dimensional frameworks built corner sharing InO4(H2O)2 octahedra MO4 (M P5+ or As5+) tetrahedra. water molecules in both compounds have different environments involved types hydrogen bonding. Infrared spectroscopy indicates that true H2O species.
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