data_global _amcsd_formula_title 'H8 Hg N2 Na2 O18 P6' loop_ _publ_author_name 'Averbuch-Pouchot M' 'Durif A' _journal_name_full 'Acta Crystallographica, Section C' _journal_volume 42 _journal_year 1986 _journal_page_first 932 _journal_page_last 933 _publ_section_title ; Structure of diammonium disodium mercury(II) trimetaphosphate _cod_database_code 1007261 ; _database_code_amcsd 0015942 _chemical_formula_sum '(Hg Na2) N2 P6 O18' _cell_length_a 13.524 _cell_length_b 8.362 _cell_length_c 14.390 _cell_angle_alpha 90 _cell_angle_beta 92.58 _cell_angle_gamma 90 _cell_volume 1625.682 _exptl_crystal_density_diffrn 3.058 _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 _atom_site_occupancy Hg1 0.16170 0.14270 0.41480 0.33330 Hg2 0.00000 0.35450 0.25000 0.33330 Na1 0.16170 0.14270 0.41480 0.66670 Na2 0.00000 0.35450 0.25000 0.66670 N1 0.34890 0.12700 0.04060 1.00000 P1 0.08100 0.02630 0.11830 1.00000 P2 0.40380 0.18780 0.37190 1.00000 P3 0.27200 0.37340 0.25390 1.00000 O1 -0.00360 0.14460 0.36040 1.00000 O2 0.13710 0.04720 0.03200 1.00000 O3 0.46780 0.35120 0.38020 1.00000 O4 0.33500 0.18560 0.44970 1.00000 O5 0.47280 0.05280 0.36100 1.00000 O6 0.34170 0.21940 0.27580 1.00000 O7 0.18070 0.36000 0.30830 1.00000 O8 0.26290 0.39600 0.15190 1.00000 O9 0.34160 0.51860 0.29440 1.00000