#------------------------------------------------------------------------------
#$Date: 2016-02-13 13:50:18 +0100 (Sat 13 de Feb de 2016) $
#$Revision: 176428 $
#$URL: svn://www.crystallography.net/cod/cif/1/54/19/1541942.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_1541942
loop_
_publ_author_name
'Atoji, M.'
_publ_section_title
;
 Crystal structure determination of disodium acetylide, Na2 C2, by neutron
 diffraction
;
_journal_name_full               'Journal of Chemical Physics'
_journal_page_first              3324
_journal_page_last               3327
_journal_volume                  60
_journal_year                    1974
_chemical_formula_sum            'C2 Na2'
_chemical_name_systematic        'Na2 C2'
_space_group_IT_number           142
_symmetry_space_group_name_Hall  'I 4bw 2aw -1bw'
_symmetry_space_group_name_H-M   'I 41/a c d :1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   6.743
_cell_length_b                   6.743
_cell_length_c                   12.674
_cell_volume                     576.262
_citation_journal_id_ASTM        JCPSA6
_cod_data_source_file            Atoji_JCPSA6_1974_291.cif
_cod_data_source_block           C2Na2
_cod_original_sg_symbol_Hall     '-I 4bd 2c (x+1/2,y+1/4,z-3/8)'
_cod_database_code               1541942
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y,x+1/2,z+1/4
-x+1/2,-y+1/2,z+1/2
y+1/2,-x,z+3/4
x,-y+1/2,-z+3/4
y+1/2,x+1/2,-z
-x+1/2,y,-z+1/4
-y,-x,-z+1/2
-x,-y+1/2,-z+1/4
y,-x,-z
x-1/2,y,-z-1/4
-y-1/2,x+1/2,-z-1/2
-x,y,z-1/2
-y-1/2,-x,z+1/4
x-1/2,-y+1/2,z
y,x+1/2,z-1/4
x+1/2,y+1/2,z+1/2
-y+1/2,x+1,z+3/4
-x+1,-y+1,z+1
y+1,-x+1/2,z+5/4
x+1/2,-y+1,-z+5/4
y+1,x+1,-z+1/2
-x+1,y+1/2,-z+3/4
-y+1/2,-x+1/2,-z+1
-x+1/2,-y+1,-z+3/4
y+1/2,-x+1/2,-z+1/2
x,y+1/2,-z+1/4
-y,x+1,-z
-x+1/2,y+1/2,z
-y,-x+1/2,z+3/4
x,-y+1,z+1/2
y+1/2,x+1,z+1/4
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
C1 C-1 0.0629 0.0629 0.25 1 0.0
Na1 Na+1 0.25 -0.19 0.125 1 0.0
