#------------------------------------------------------------------------------
#$Date: 2018-09-27 06:13:35 +0200 (jue 27 de sep de 2018) $
#$Revision: 211196 $
#$URL: svn://www.crystallography.net/cod/cif/2/31/02/2310284.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2310284
loop_
_publ_author_name
'Dickins, G.J.'
'Douglas, A.M.B.'
'Taylor, W.H.'
_publ_section_title
;
 The crystal structure of the Co-Cr sigma phase
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              297
_journal_page_last               302
_journal_volume                  9
_journal_year                    1956
_chemical_formula_sum            'Co7 Cr8'
_space_group_IT_number           136
_symmetry_space_group_name_Hall  '-P 4n 2n'
_symmetry_space_group_name_H-M   'P 42/m n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.81
_cell_length_b                   8.81
_cell_length_c                   4.56
_cell_volume                     353.929
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Dickins_ACCRA9_1956_911.cif
_cod_data_source_block           Co7Cr8
_cod_original_cell_volume        353.9294
_cod_database_code               2310284
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y+1/2,x+1/2,z+1/2
-x,-y,z
y+1/2,-x+1/2,z+1/2
x+1/2,-y+1/2,-z+1/2
y,x,-z
-x+1/2,y+1/2,-z+1/2
-y,-x,-z
-x,-y,-z
y-1/2,-x-1/2,-z-1/2
x,y,-z
-y-1/2,x-1/2,-z-1/2
-x-1/2,y-1/2,z-1/2
-y,-x,z
x-1/2,-y-1/2,z-1/2
y,x,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
Cr1 Cr 0.3984 0.3984 0 1 0.0
Co2 Co 0.0654 0.2596 0 1 0.0
Cr2 Cr 0.5373 0.1291 0 1 0.0
Co1 Co 0 0 0 1 0.0
Co3 Co 0.1826 0.1826 0.25 0.5 0.0
Cr3 Cr 0.1826 0.1826 0.25 0.5 0.0
