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#$Date: 2015-10-14 14:11:06 +0300 (Wed, 14 Oct 2015) $
#$Revision: 168429 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/53/95/1539501.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_1539501
loop_
_publ_author_name
'Springthorpe, A.J.'
'Harrison, J.G.'
_publ_section_title
;
 Mg Si P2: a new member of the II IV V2 family of semiconducting compounds
;
_journal_name_full               'Nature (London)'
_journal_page_first              977
_journal_page_last               977
_journal_volume                  222
_journal_year                    1969
_chemical_formula_sum            'Mg P2 Si'
_chemical_name_systematic        'Mg Si P2'
_space_group_IT_number           122
_symmetry_space_group_name_Hall  'I -4 2bw'
_symmetry_space_group_name_H-M   'I -4 2 d'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.721
_cell_length_b                   5.721
_cell_length_c                   10.095
_cell_volume                     330.408
_citation_journal_id_ASTM        NATUAS
_cod_data_source_file            Springthorpe_NATUAS_1969_552.cif
_cod_data_source_block           Mg1P2Si1
_cod_original_cell_volume        330.4078
_cod_chemical_formula_sum_orig   'Mg1 P2 Si1'
_cod_database_code               1539501
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
y,-x,-z
-x,-y,z
-y,x,-z
x,-y+1/2,-z+1/4
-y+1/2,-x,z+3/4
-x,y+1/2,-z+1/4
y+1/2,x,z+3/4
x+1/2,y+1/2,z+1/2
y+1/2,-x+1/2,-z+1/2
-x+1/2,-y+1/2,z+1/2
-y+1/2,x+1/2,-z+1/2
x+1/2,-y+1,-z+3/4
-y+1,-x+1/2,z+5/4
-x+1/2,y+1,-z+3/4
y+1,x+1/2,z+5/4
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
P1 P 0.27 0.25 0.125 1 0.0
Mg1 Mg 0 0 0.5 1 0.0
Si1 Si 0 0 0 1 0.0