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 1000290 _database_code_amcsd 0014348 5.4146 5.3757 7.6199 90 90 90 Pbnm atom x y z Pr1 .9957 .0291 .25 Ni1 .5 0 0 O1 .0680 .4926 .25 O2 .7175 .2844 .0351