Crystal structure of NaMg4 (VO4)3

Electrochemical-hydrothermal Synthesis and Structural Characterization of Zn2(OH)VO4

“…The mineral adamite Zn 2 (OH)AsO 4 [21] and several isotypic phases such as Zn 2 (OH)PO 4 [22] crystallize in the space group Pnmn, and have unit cell parameters similar to those of descloizite. If projected onto the (010) plane, the Zn(OH)AsO 4 and Zn(OH)PO 4 frameworks in the adamite-type structures (Fig. 4 b) are topologically the same as the Zn(OH)VO 4 framework of the descloizite structure (Fig.…”

“…1 mA generated by a commercial power source (MacPile, Biologic Scientific Instruments) at 170 ± 2°C for 115 hours. Pale brown needles of Zn 2 (OH)VO 4 were formed as a layer of thickness 0.05±0.15 mm on the vanadium electrode. Dark blue lamellae of an unknown phase were found between this layer and the vanadium metal electrode plate.…”

“…Another way to describe the structure is that the [010] chains of edge-shared Zn(3)O 6 octahedra are interconnected by VO 4 tedrahedra into a three dimensional framework of composition Zn(OH)VO 4 . The Zn(1) and Zn(2) atoms occupy the voids of the framework (Fig.…”

Synthesis and Structure of the Ternary Vanadate NaMn4(VO4)3

“…The NaCa 4 (VO 4 ) 3 structure is very similar to that of Ca 3 Y 2 (SiO 4 ) 3 [11] and NaCd 4 (PO 4 ) 3 [12], with a silicocarnotite type. In the AMg 4 (VO 4 ) 3 series, only LiMg 4 (VO 4 ) 3 [13] and NaMg 4 (VO 4 ) 3 [14] have been observed, and both crystallize with the same structure, different from that of the Cd analogs. No A/Mg disorder is observed in these structures; the Mg atoms occupy octahedral sites, and the alkali cations occupy sites with an eightfold coordination.…”

“…For the AMn 4 (VO 4 ) 3 series, to our knowledge, no compound has been reported in the literature. Herein we report on the successful synthesis and structure of NaMn 4 (VO 4 ) 3 which is isotypic with AMg 4 (VO 4 ) 3 (A = Li, Na) [13,14].…”