H Nb O3 Fourquet J, Renou M, De P, Theveneau H, Man P, Lucs O, Pannetier J Solid State Ionics 9 (1983) 1011-1013 H Nb O3, structure and NMR study _cod_database_code 1000190 _database_code_amcsd 0015506 7.645 7.645 7.645 90 90 90 Im3 atom x y z occ Nb1 .25 .25 .25 O1 0 .189 .289 H1 0 .060 .304 .1667 H2 0 .196 .44 .1667