La2 Ni O4 Odier P, Leblanc M, Choisnet J Materials Research Bulletin 21 (1986) 787-796 Structural characterization of an orthorhombic form of La Ni O4 _cod_database_code 1000414 _database_code_amcsd 0014318 5.468 5.535 12.547 90 90 90 Pncb atom x y z La1 0 0 .3774 La2 .5 0 .1367 Ni1 0 0 0 Ni2 .5 0 .5 O1 0 0 .195 O2 .5 0 .326 O3 .226 .25 .007