Disodium tris(dioxidomolybdenum) bis(diarsenate)

Abstract

Key indicators: single-crystal X-ray study; T = 298 K; mean (Mo-O) = 0.004 Å; disorder in main residue; R factor = 0.025; wR factor = 0.060; data-to-parameter ratio = 13.5.The asymmetric unit of the title compound, Na 2 (MoO 2 ) 3 -(As 2 O 7 ) 2 , is composed of two cyclic MoAs 2 O 11 units and an MoO 6 corner-sharing octahedron. The anionic framework can be decomposed into two types of layers, viz. MoO 2 As 2 O 7 and Mo 2 As 2 O 14 , which use mixed Mo-O-As and As-O-Mo bridges to achieve a new three-dimensional structure with two types of large channels in which the Na + cations are located. Related literature

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

“…This kind of material shows important energetic property which is the ionic conductivity. We are interested in this field and we have explored the A 2 O-MoO 3 -As 2 O 5 systems (A = alkali or silver) in which many compounds were characterized: K 2 MoO 2 (MoO 2 As 2 O 7 ) 2 [2], Na 2 (MoO 2 ) 3 (As 2 O 7 ) 2 [3], and NaAg 2 Mo 3 O 9 AsO 4 [4]. We have succeeded in the synthesis of a new material LiNa 5 K 3 Mo 11 As 3 O 45 .…”