#------------------------------------------------------------------------------
#$Date: 2015-10-14 19:38:22 +0300 (Wed, 14 Oct 2015) $
#$Revision: 168998 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/53/99/1539913.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1539913
loop_
_publ_author_name
'Buerger, M.J.'
'Wuensch, B.J.'
_publ_section_title
;
 Distribution of atoms in high chalcocite, Cu2 S
;
_journal_name_full               Science
_journal_page_first              276
_journal_page_last               277
_journal_volume                  141
_journal_year                    1963
_chemical_formula_sum            'Cu2 S'
_chemical_name_systematic        'Cu2 S'
_space_group_IT_number           194
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            2
_cell_length_a                   3.89
_cell_length_b                   3.89
_cell_length_c                   6.88
_cell_volume                     90.161
_citation_journal_id_ASTM        SCIEAS
_cod_data_source_file            Buerger_SCIEAS_1963_414.cif
_cod_data_source_block           Cu2S1
_cod_original_cell_volume        90.16091
_cod_chemical_formula_sum_orig   'Cu2 S1'
_cod_database_code               1539913
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x-y,x,z+1/2
-y,x-y,z
-x,-y,z+1/2
-x+y,-x,z
y,-x+y,z+1/2
-y,-x,-z+1/2
x-y,-y,-z
x,x-y,-z+1/2
y,x,-z
-x+y,y,-z+1/2
-x,-x+y,-z
-x,-y,-z
-x+y,-x,-z-1/2
y,-x+y,-z
x,y,-z-1/2
x-y,x,-z
-y,x-y,-z-1/2
y,x,z-1/2
-x+y,y,z
-x,-x+y,z-1/2
-y,-x,z
x-y,-y,z-1/2
x,x-y,z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
S1 S 0.3333 0.6667 0.25 1 0.0
Cu2 Cu 0.3333 0.6667 0.578 0.41 0.0
Cu1 Cu 0 0 0.25 0.62 0.0
Cu3 Cu 0.5 0 0 0.19 0.0