data_global
_amcsd_formula_title 'Cu H8 K4 O22 P6'
loop_
_publ_author_name
'Durif A'
'Averbuch-Pouchot M'
_journal_name_full 'Acta Crystallographica, Section C'
_journal_volume 43 
_journal_year 1987
_journal_page_first 819
_journal_page_last 821
_publ_section_title
;
 Structure of tetrapotassium copper cyclo-triphosphate tetrahydrate.
 _cod_database_code 1007164
;
_database_code_amcsd 0010037
_chemical_formula_sum 'Cu K4 P6 O22 H8'
_cell_length_a 8.510
_cell_length_b 14.303
_cell_length_c 8.487
_cell_angle_alpha 90
_cell_angle_beta 96.51
_cell_angle_gamma 90
_cell_volume 1026.365
_exptl_crystal_density_diffrn      2.478
_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
Cu1   0.00000   0.00000   0.50000
K1   0.67548   0.40312   0.94663
K2   0.50340   0.21887   0.33325
P1   0.75728   0.16541   0.00048
P2   0.80958   0.17353   0.67164
P3   0.56549   0.05025   0.76721
O1   0.70630   0.23590   0.11060
O2   0.88800   0.10120   0.05870
O3   0.79620   0.21970   0.84350
O4   0.94390   0.10720   0.68790
O5   0.79860   0.24850   0.55200
O6   0.39240   0.05550   0.72950
O7   0.64380   0.95760   0.77340
O8   0.64420   0.11710   0.64590
O9   0.60680   0.10400   0.93260
O10   0.64890   0.40530   0.42430
O11   0.83390   0.05750   0.35570
H1   0.70200   0.42600   0.36100
H2   0.69100   0.37100   0.48600
H3   0.85600   0.07400   0.27900
H4   0.73300   0.02200   0.33200