data_global _amcsd_formula_title 'H4 N O12 P4 Pr' loop_ _publ_author_name 'Masse R' 'Guitel J' 'Durif A' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 33 _journal_year 1977 _journal_page_first 630 _journal_page_last 632 _publ_section_title ; Structure cristalline du tetrametaphosphate de praseodyme-ammonium, PrN H4 P4 O12. Donnees cristallographiques de Pr N H4 P4 O12 _cod_database_code 1007010 ; _database_code_amcsd 0009583 _chemical_formula_sum 'Pr P4 O12 N' _cell_length_a 7.916 _cell_length_b 12.647 _cell_length_c 10.672 _cell_angle_alpha 90 _cell_angle_beta 110.34 _cell_angle_gamma 90 _cell_volume 1001.794 _exptl_crystal_density_diffrn 3.122 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Pr1 0.00000 0.12086 0.25000 P1 0.46170 0.16900 0.50240 P2 0.28550 0.97900 0.56110 O1 0.40580 0.87560 0.56810 O2 0.43120 0.07220 0.58850 O3 0.29330 0.19860 0.39070 O4 0.56100 0.25230 0.59830 O5 0.22380 0.97270 0.67630 O6 0.15180 -0.01000 0.42440 N1 0.00000 0.81890 0.25000