D1.4H1.6Ta2O6 Groult D, Pannetier, Raveau B Journal of Solid State Chemistry 41 (1982) 277-285 Neutron diffraction study of the defect pyrochlores TaWO5.5, HTaWO6, H2Ta2O6, and HTaWO6*H2 O _cod_database_code 1001217 _database_code_amcsd 0013472 10.6106 10.6106 10.6106 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Ta1 0 0 0 D1 .391 .125 .125 .0667 H1 .391 .125 .125 .2667 O1 .3107 .125 .125