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)
 Note: Kalicinite-type structure
 Sample: P = 2.50 GPa
;
_database_code_amcsd 0004370
_chemical_formula_sum 'K D C O3'
_cell_length_a 14.419
_cell_length_b 5.5011
_cell_length_c 3.6093
_cell_angle_alpha 90
_cell_angle_beta 101.731
_cell_angle_gamma 90
_cell_volume 280.311
_exptl_crystal_density_diffrn      2.396
_symmetry_space_group_name_H-M 'P 1 21/a 1'
loop_
_space_group_symop_operation_xyz
  'x,y,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
K   0.16170   0.03300   0.29800
D   0.01200   0.69900   0.54100
C   0.11830   0.53600   0.87800
O1   0.19540   0.55400   0.11800
O2   0.07190   0.73700   0.74600
O3   0.08130   0.32700   0.74200