A new ammonium magnesium paradodecatungstate decahydrate, namely diammonium octadecaaquahydrogentetramagnesiododecatungstate decahydrate, (NH4)2-[Mg4(H2O)18(H 2W12O42)]·10H2O, was prepared by the reaction of (NH4)10[H2W12O 42]·4H2O with MgCl2 in aqueous solution. The skeleton of the paradodecatungstate ion, [H2W12O42]10-, is basically the same as those in the known paradodecatungstates. It consists of 12 interconnected WO6 octahedra and its centre is located at a crystallographic inversion centre. Both independent Mg atoms are octahedrally coordinated by six O atoms. One magnesium octahedron shares an O atom with a paradodecatungstate group and the other magnesium octahedron shares two O atoms, each with different paradodecatungstate groups, to form a one-dimensional [Mg4(H2O)18(H2W12O 42)]2n- n chain along the b direction.
|Number of pages||4|
|Journal||Acta Crystallographica Section C: Crystal Structure Communications|
|Publication status||Published - Sep 15 1999|
ASJC Scopus subject areas
- Condensed Matter Physics
- Structural Biology