O5 Ta V Chahboun H, Groult D, Raveau B Materials Research Bulletin 23 (1988) 805-812 Ta V O5, a novel derivative of the series of monophosphate tungsten bronzes (P O2)4 (W O3)2m _cod_database_code 1001386 _database_code_amcsd 0014331 11.860 5.516 6.928 90 90 90 Pnma atom x y z Ta1 .0610 .25 .343 V1 .339 .25 .543 O1 0 0 .5 O2 .119 .010 .132 O3 .203 .25 .464 O4 .418 .25 .338