data_global
_amcsd_formula_title 'As Fe2'
loop_
_publ_author_name
'Elander M'
'Haegg G'
'Westgren A'
_journal_name_full 'Arkiv for Kemi, Mineralogi och Geologi'
_journal_volume B12 
_journal_year 1935
_journal_page_first 1
_journal_page_last 6
_publ_section_title
;
 The crystal structure of Cu2 Sb and Fe2 As
 _cod_database_code 1011298
;
_database_code_amcsd 0018145
_chemical_formula_sum 'Fe2 As'
_cell_length_a 3.627
_cell_length_b 3.627
_cell_length_c 5.973
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 78.576
_exptl_crystal_density_diffrn      7.887
_symmetry_space_group_name_H-M 'P 4/n m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,z'
  'y,x,-z'
  'y,-x,-z'
  '1/2-y,1/2+x,z'
  'x,-y,z'
  '1/2-x,1/2+y,-z'
  '1/2+x,1/2+y,-z'
  '-x,-y,z'
  '1/2+y,1/2+x,z'
  '-y,-x,-z'
  '-y,x,-z'
  '1/2+y,1/2-x,z'
  '-x,y,z'
  '1/2+x,1/2-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
Fe1   0.00000   0.00000   0.00000
Fe2   0.00000   0.50000   0.33000
As1   0.00000   0.50000  -0.26500