data_global
_amcsd_formula_title 'As3 Sn4'
loop_
_publ_author_name
'Haegg G'
'Hybinette A'
_journal_name_full 'Philosophical Magazine'
_journal_volume 20 
_journal_year 1935
_journal_page_first 913
_journal_page_last 929
_publ_section_title
;
 X-ray studies on the systems tin-antimony and tin-arsenic
 _cod_database_code 1010003
;
_database_code_amcsd 0016939
_chemical_formula_sum 'As3 Sn4'
_cell_length_a 12.23
_cell_length_b 12.23
_cell_length_c 12.23
_cell_angle_alpha 19.22
_cell_angle_beta 19.22
_cell_angle_gamma 19.22
_cell_volume 173.289
_exptl_crystal_density_diffrn      6.704
_symmetry_space_group_name_H-M 'R -3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-z,-y'
  '-z,-x,-y'
  'y,x,z'
  'y,z,x'
  '-z,-y,-x'
  '-x,-y,-z'
  'x,z,y'
  'z,x,y'
  '-y,-x,-z'
  '-y,-z,-x'
  'z,y,x'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
As1   0.00000   0.00000   0.00000
Sn1   0.14290   0.14290   0.14290
Sn2   0.28570   0.28570   0.28570
As2   0.42860   0.42860   0.42860