Phase formation in the K2MoO4-Lu2(MoO4)-Hf(MoO4)2 system and the structural study of triple molybdate K5LuHf(MoO4)6 |
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| Authors: | E Yu Romanova B G Bazarov R F Klevtsova L A Glinskaya Yu L Tushinova K N Fedorov and Zh G Bazarova |
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| Institution: | (1) Buryat State University, ul. Smolina 24a, Ulan-Ude, Buryat Republic, 670000, Russia;(2) Baikal Institute of Nature Management, Siberian Division, Russian Academy of Sciences, ul. Sakhanovoi 8, Ulan-Ude, Buryat Republic, 670047, Russia;(3) Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia |
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| Abstract: | Interactions in the ternary system K2MoO4-Lu2(MoO4)3-Hf(MoO4)2 have been studied by X-ray powder diffraction and differential thermal analysis. A new triple (potassium lutetium hafnium)
molybdate with the 5: 1: 2 stoichiometry has been found. Single crystals of this molybdate have been grown. Its X-ray diffraction
structure has been refined (an X8 APEX automated diffractometer, MoK
α radiation, 1960 F(hkl), R = 0.0166). The trigonal unit cell has the following parameters: a = 10.6536(1) ?, c = 37.8434(8) ?, V = 3719.75(9) ?, Z = 6, space group R
c. The mixed 3D framework of the structure is built of Mo tetrahedra sharing corners with two independent (Lu,Hf)O6 octahedra. Two sorts of potassium atoms occupy large framework voids.
Original Russian Text ? E.Yu. Romanova, B.G. Bazarov, R.F. Klevtsova, L.A. Glinskaya, Yu.L. Tushinova, K.N. Fedorov, Zh.G.
Bazarova, 2007, published in Zhurnal Neorganicheskoi Khimii, 2007, Vol. 52, No. 5, pp. 815–818. |
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