Ni O3 Pr Huang T, Parrish W, Toraya H, Lacorre P, Torrance J Materials Research Bulletin 25 (1990) 1091-1098 High temperature crystal structures of orthorhombic and rhombohedral PrNiO3 _cod_database_code 1000291 _database_code_amcsd 0014349 5.4294 5.3849 7.6362 90 90 90 Pbnm atom x y z Pr1 .9957 .0261 .25 Ni1 .5 0 0 O1 .0581 .4964 .25 O2 .7198 .2792 .0397