Na O3 W Haegg G Nature 135 (1935) 874-874 The Spinels and the Cubic Sodium - Tungsten Bronzes as New Examples of Structures with Vacant Lattice Points _cod_database_code 1010419 _database_code_amcsd 0017343 3.85 3.85 3.85 90 90 90 Pm3m atom x y z Na1 0 0 0 W1 .5 .5 .5 O1 .5 .5 0