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 1000292 _database_code_amcsd 0014350 5.4456 5.3952 7.6520 90 90 90 Pbnm atom x y z Pr1 .9964 .0228 .25 Ni1 .5 0 0 O1 .0502 .4923 .25 O2 .7175 .2742 .0409