Co4 Nb2 O9 Bertaut E, Corliss L, Forrat F, Aleonard R, Pauthenet R Journal of Physics and Chemistry of Solids 21 (1961) 234-251 Etude de niobates et tantalates de metaux transition bivalents _cod_database_code 1008215 _database_code_amcsd 0016153 5.177 5.177 14.168 90 90 120 P-3c1 atom x y z Nb1 0 0 .36 Co1 1/3 2/3 .027 Co2 1/3 2/3 .307 O1 .305 0 .25 O2 1/3 .295 .0833