Bi2 K1.4 O7 Sr1.6 Pshirkov J, Kazakov S, Bougerol-Chaillout C, Bordet P, Capponi J, Putilin S, Antipov E Journal of Solid State Chemistry 144 (1999) 405-408 A new layered bismuthate (Sr,K)3 Bi2 O7: synthesis and crystal structure _cod_database_code 1009011 _database_code_amcsd 0016873 4.1549 4.1549 21.82729 90 90 90 I4/mmm atom x y z occ Sr1 0 0 .5 Sr2 0 0 .3066 .3 K1 0 0 .3066 .7 Bi1 0 0 .0987 O1 0 0 0 O2 0 .5 .0850 O3 0 0 .193