data_global _amcsd_formula_title 'H3 O7.5 P2 Rb2' loop_ _publ_author_name 'Averbuch-Pouchot M' 'Durif A' _journal_name_full 'Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences' _journal_volume 316 _journal_year 1993 _journal_page_first 469 _journal_page_last 476 _publ_section_title ; Synthese et structure cristalline du dihydrogenodiphosphate de rubidium hemihydrate: Rb2H2P2O7 . 1/2H2O _cod_database_code 1007212 ; _database_code_amcsd 0012310 _chemical_formula_sum 'Rb P O3.75 H' _cell_length_a 19.568 _cell_length_b 10.545 _cell_length_c 7.773 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1603.916 _exptl_crystal_density_diffrn 2.939 _symmetry_space_group_name_H-M 'P n a m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Rb1 0.01421 0.84262 0.25000 1.00000 Rb2 0.22875 0.64913 0.75000 1.00000 Rb3 0.29738 0.17018 0.75000 1.00000 Rb4 0.03346 0.66682 0.75000 1.00000 P1 0.13860 0.95780 0.94060 1.00000 P2 0.13319 0.36230 0.55640 1.00000 O1 0.41190 0.53790 0.55140 1.00000 O2 0.12640 0.82030 0.97270 1.00000 O3 0.21080 0.00370 0.96040 1.00000 O4 0.61340 0.50410 0.75000 1.00000 O5 0.37860 0.00170 0.03920 1.00000 O6 0.20520 0.32440 0.49320 1.00000 O7 0.08250 0.27440 0.47850 1.00000 O8 0.61830 0.18610 0.75000 0.43000 O9 0.65940 0.16400 0.75000 0.57000 O10 0.54890 0.92280 0.25000 1.00000 H1 0.73800 0.08900 0.01000 1.00000 H2 0.60200 0.37800 0.03000 1.00000