Phase Formation in Cs2MoO4-MMoO4-Zr(MoO4)(2) (M = Mn, Mg, Co, Zn) Systems and Crystal Structure of New Double Molybdates Cs2MnZr2(MoO4)(6) and Cs2MnZr(MoO4)(4)

作者：Tsyrenova G D^*; Solodovnikov S F; Pavlova N N; Solodovnikova Z A

来源：Russian Journal of Inorganic Chemistry, 2010, 55(5): 771-779.

DOI：10.1134/S0036023610050189

Subsolidus phase relations in the Cs2MoO4-MMoO4-Zr(MoO4)(2) (M = Mn, Zn) ternary systems were determined, and two groups of new isostructural triple molybdates were synthesized: Cs2MZr(MoO4)(4) and Cs2MZr2(MoO4)(6) (M = Mn, Mg, Co, Zn). Cs2MnZr2(MoO4)(6) and Cs2MnZr(MoO4)(4) crystals were grown by spontaneous flux crystallization and used in structure solution for both groups of compounds. The Cs2MnZr2(MoO4)(6) structure (a = 13.4322(2) angstrom, c = 12.2016(3) angstrom, space group R (3) over bar, Z = 3, R = 0.0367) is a new structure type characterized by a mixed three-dimensional framework built of corner-sharing MoO4 tetrahedra and (M, Zr)O-6 octahedra where large channels are occupied by cesium cations. Cs2MnZr2(MoO4)(4) (a = 5.3890(1) angstrom, c = 8.0685(3) angstrom, space group P (3) over bar m1, Z = 0.5, R = 0.0247) has the layered glaserite-like KAl(MoO4)(2) type structure, where Al3+ octahedral positions are randomly occupied by a 0.5M(2+) + 0.5Zr(4+) mixture.

• 出版日期2010-5