Sodium magnesium bis(vanadate) pyrovanadate: Na6Mg2(VO4)2(V2O7).
The crystal structure of the new complex vanadium oxide Na(6)Mg(2)(VO(4))(2)(V(2)O(7)) was solved from X-ray single-crystal data. The structure contains VO(4) tetrahedra and MgO(6) octahedra, linked by corners and forming a complex three-dimensional framework. A half of the VO(4) tetrahedra are connected only to MgO(6) octahedra, whereas the others are corner-sharing, forming V(2)O(7) pyrovanadate groups with statistically random orientations. One unique Mg atom is located at an inversion centre, while the other Mg atom, one unique V atom and five unique O atoms lie on mirror planes.
Mitiaev
Alexander
A
Department of Chemistry, Moscow State University, Leninskie Gory, 119992 Moscow, Russia.
Mironov
Andrei
A
Shpanchenko
Roman
R
Antipov
Evgeny
E