Fe17 N2.92 Pr2 Isnard O, Miraglia S, Soubeyroux J, Fruchart D, Pannetier J Physical Review B45 (1992) 2920-2926 Neutron powder diffraction study of Pr2Fe17 and Pr2Fe17N2.9 _cod_database_code 1008530 _database_code_amcsd 0016423 8.771 8.771 12.629 90 90 120 R-3m atom x y z occ Pr1 0 0 .3431 Fe1 0 0 .0947 Fe2 .5 0 .5 Fe3 .2818 0 0 Fe4 .5064 .4936 .1532 N1 .5 0 0 .973