Synthesis, Crystal Structure, and Electrical Properties of a New Molybdylarsenate LiNa5K3Mo11As3O45

LiNa5K3Mo11As3O45is a new inorganic compound. It was synthesized by a solid state method. The crystal structure has been studied by single crystal X-ray analysis. TheR-values reached 2.8%. The title compound crystallizes in the triclinic system, space group P-1, witha= 10.550 (2) Å,b= 11.723 (2) Å,c= 17.469 (3) Å,α= 102.35 (3)°,β= 87.61 (2)°, andγ= 111.03 (3)°. The anionic unit [Mo11As3O45]9−is formed by nine MoO6octahedra, two MoO5trigonal bipyramids, and three AsO4tetrahedra. The association of [Mo11As3O45]9−units, running along [010], leads to a one-dimensional framework. Li, K, and Na are located in the space surrounding the anionic ribbons. This material was characterized by SEM microscopy, IR spectroscopy, and powder X-ray diffraction. The electrical conductivity was investigated from 528 K to 673 K by impedance complex followed by DSC spectroscopy.