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Synthesis and Characterization of the New Copper Indium Phosphate Cu 8 In 8 P 4 O 30
Author(s) -
Hanzelmann Christian,
Weimann Iren,
Feller Jörg,
Žak Zdirad
Publication year - 2014
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201300251
Subject(s) - octahedron , triclinic crystal system , crystallography , ampoule , indium , copper , materials science , crystallization , powder diffraction , trigonal crystal system , crystal structure , chemistry , metallurgy , organic chemistry , composite material
The system CuO/In 2 O 3 /P 2 O 5 has been investigated using solid state reaction between CuO, In 2 O 3 and (NH 4 ) 2 HPO 4 in silica glass crucibles at 900 °C. The powder samples were characterized by X‐ray diffraction, thermal analysis and FT‐IR spectroscopy. Orange single crystals of the new quaternary phase were achieved by the process of crystallization with mineralizers in sealed silica glass ampoules. They were then analyzed with EDX and single‐crystal X‐ray analysis in which the composition Cu 8 In 8 P 4 O 30 with the triclinic space group P $\bar{1}$ (No 2) with a = 7,2429(14) Å, b = 8,8002(18) Å, c = 10,069(2) Å, α = 103,62(3)°, β = 106,31(3)°, γ = 101,55(3)° and Z = 1 was found. The three‐dimensional framework consists of [InO 6 ] octahedra and distorted [CuO 6 ] octahedra, overcaped [InO 7 ] prisms and [PO 4 ] tetrahedra, also trigonal [(CuIn)O 5 ] bipyramids and distorted [(CuIn)O 6 ] octahedra, where copper and indium are partly exchanged against each other. Cu 8 In 8 P 4 O 30 exhibits an incongruent melting point at 1023 °C.