data_global
_chemical_name_mineral 'Ponomarevite'
loop_
_publ_author_name
'de Boer J J'
'Bright D'
'Helle J N'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 28 
_journal_year 1972
_journal_page_first 3436
_journal_page_last 3437
_publ_section_title
;
 The structure of the potassium salt of mu4-oxo-hexa-mu-chloro-
 tetra[chlorocuprate(II)], K4Cu4OCl10
;
_database_code_amcsd 0009464
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'K4 Cu4 O Cl10'
_cell_length_a 14.70
_cell_length_b 14.88
_cell_length_c 8.95
_cell_angle_alpha 90
_cell_angle_beta 104.74
_cell_angle_gamma 90
_cell_volume 1893.260
_exptl_crystal_density_diffrn      2.740
_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_U_iso_or_equiv
K1   0.15900   0.12950   0.37580   0.03546
K2   0.13150   0.42710   0.14010   0.03800
Cu1   0.06140   0.29140  -0.36800   0.02305
Cu2   0.09210   0.14130  -0.11490   0.02634
O   0.00000   0.21680  -0.25000   0.01646
Cl1   0.19560   0.20420  -0.27420   0.03166
Cl2  -0.05210   0.22490  -0.58480   0.03166
Cl3   0.00000   0.41520  -0.25000   0.03420
Cl4   0.00000   0.01980  -0.25000   0.05446
Cl5   0.12140   0.38200  -0.51960   0.03166
Cl6   0.20610   0.05980   0.04230   0.02913