Na0.5 Nb2 O12 P3 Leclaire A, Borel M, Grandin A, Raveau B Materials Research Bulletin 26 (1991) 207-211 A niobium phosphate with a nasicon structure: Na0.5Nb2(PO4)3 _cod_database_code 1001500 _database_code_amcsd 0014356 8.7362 8.7362 22.093 90 90 120 R-3c atom x y z occ Nb1 0 0 .14377 Na1 0 0 0 .5 P1 .2882 0 .25 O1 .0202 .2006 .1932 O2 .1949 .1696 .0881