data_global _amcsd_formula_title 'KHCO3' loop_ _publ_author_name 'Allan D R' 'Marshall W G' 'Pulham C R' _journal_name_full 'American Mineralogist' _journal_volume 92 _journal_year 2007 _journal_page_first 1018 _journal_page_last 1025 _publ_section_title ; The high-pressure crystal structure of potassium hydrogen carbonate (KHCO3) Sample: P = 5.38 GPa ; _database_code_amcsd 0004375 _chemical_formula_sum 'K D C O3' _cell_length_a 6.1393 _cell_length_b 5.2958 _cell_length_c 4.2228 _cell_angle_alpha 95.297 _cell_angle_beta 100.665 _cell_angle_gamma 108.892 _cell_volume 125.931 _exptl_crystal_density_diffrn 2.667 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z K 0.30000 0.13000 0.28800 D 0.08870 0.70710 0.54100 C 0.22720 0.57200 0.91100 O1 0.20630 0.77300 0.74700 O2 0.10970 0.33300 0.77600 O3 0.37570 0.64300 0.17900