Phase Equilibrium in the Cs₂MoO₄Bi₂(MoO₄)₃Zn(MoO₄)₂
System and the Crystal Structure of New Triple Molybdate
Cs₅BiZr(MoO₄)₆

B. G. Bazarov^a, T. V. Namsaraeva^a, R. F. Klevtsova^b, A. G. Anshits^c, T. A. Vereshchagina^c,
R. V. Kurbatov^a, L. A. Glinskaya^b, K. N. Fedorov^a, and Zh. G. Bazarova^a

^a Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences,
Ulan-Ude, Buryat Republic, Russia

^b Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences,
pr. Akademika Lavrent’eva 3, Novosibirsk, 630090 Russia

^c Institute of Chemistry and Chemical Technology, Siverian Branch, Russian Academy of Sciences,
Krasnoyarsk, Russia

Received July 31, 2007

AbstractThe subsolidus region of the Cs₂MoO₄Bi₂(MoO₄)₃Zr(MoO₄) system was studied by X-ray pow-
der diffraction. Quasi-binary sections were elucidated, and triangulation performed. Triple molybdates with the
component ratios 5 : 1 : 2 (S₁) and 2 : 1 : 4 (S₂) were prepared for the first time. Crystals of cesium bismuth
zirconium molybdate of the 5 : 1 : 2 stoichiometry (Cs₅BiZr(MoO₄)₆) were grown from fluxed melts with spon-
taneous nucleation. The composition and crystal structure of this triple molybdate were refined using X-ray dif-
fraction data (collected on X8 APEX automated diffractometer, _a radiation, 2348 F(hkl), R = 0.0226). The
trigonal unit cell parameters were as follows: a = b = 10.9569(2), c=39.804(4) , V = 4138.4(4) ³, Z = 6, space
group Rc. The mixed-metal three-dimensional framework in this structure is built of Mo tetrahedra and two
sorts of (Bi,Zr)O₆ octahedra. Large interstices accommodate two sorts of cesium atoms. The Bi³⁺ and Zr⁴⁺ cation
distributions over two positions were refined during structure solution.

DOI: 10.1134/S0036023608090222

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.