Na Nb6 O24 P3 Rb2 Costentin G, Borel M, Grandin A, Leclaire A, Raveau B Materials Research Bulletin 26 (1991) 301-307 A large family of niobium phosphates with the Ca0.5Cs2Nb6P3O24 structure _cod_database_code 1001862 _database_code_amcsd 0014358 13.3518 13.3518 10.3415 90 90 120 R32 atom x y z occ Rb1 .3607 .3332 .2274 .333 Na1 0 0 0 Nb1 .52159 .16187 .01413 P1 .2296 0 0 O1 .1462 .9754 .1153 O2 .1528 0 .5 O3 .3450 .1071 .0274 O4 .4748 0 0 O5 .6782 .2182 .0316