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Synthesis and crystal structure of langbeinite related mixed‐metal phosphates K 1.822 Nd 0.822 Zr 1.178 (PO 4 ) 3 and K 2 LuZr(PO 4 ) 3
Author(s) -
Ogorodnyk I. V.,
Zatovsky I. V.,
Baumer V. N.,
Slobodyanik N. S.,
Shishkin O. V.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200710961
Subject(s) - lanthanide , potassium , zirconium , octahedron , chemistry , crystallography , crystal structure , crystal chemistry , metal , inorganic chemistry , flux method , flux (metallurgy) , mineral , powder diffraction , transition metal , single crystal , organic chemistry , catalysis , ion
Two potassium lanthanide zirconium orthophosphates with general composition K 1.822 Nd 0.822 Zr 1.178 (PO 4 ) 3 (KNdZrP) and K 2 LuZr(PO 4 ) 3 (KLuZrP) were prepared using the flux technique. Original synthetic procedure has been examined for the flux growth of the complex phosphates containing zirconium and lanthanide. Both compounds have been synthesized in the complex melts containing at the same time potassium phosphates and transition metal fluorides. The structures were solved from the single crystal (KNdZrP) and powder (KLuZrP) X‐ray diffraction data. Both compounds are isotypic to langbeinite mineral and crystallize in cubic system (sp. gr. P2 1 3) with the cell parameters a = 10.3228(2) and a = 10.29668(5) Å respectively. The rigid framework is built up from the isolated [MO 6 ] octahedra and [PO 4 ] tetrahedra interlinked via vertices. The potassium cations are located in the large closed cavities of the framework. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)