H2 Li Nb O7 W Michel C, Groult D, Raveau B Journal of Inorganic and Nuclear Chemistry 37 (1975) 247-250 Proprietes d'echange d'ions des pyrochlores A B2 O6 - I _cod_database_code 1001033 _database_code_amcsd 0013035 10.397 10.397 10.397 90 90 90 Fd3m atom x y z occ Li1 .625 .625 .625 .5 Nb1 .125 .125 .125 .5 W1 .125 .125 .125 .5 O1 .318 0 0 O2 .5 .5 .5