Pr2NiO4 Puche R, Fernandez F, Rodriguez Carvajal J, Martinez J Solid State Communications 72 (1989) 273-277 Magnetic And X-Ray Diffraction Characterization of Stoichiometric Pr2NiO4 and Nd2NiO4 Oxides _cod_database_code 1006010 _database_code_amcsd 0015460 5.4042 5.5780 12.220 90 90 90 Bmab atom x y z Pr1 0 -.0150 .3621 Ni1 0 0 0 O1 .25 .25 -.0186 O2 0 .079 .179