data_stdin
_audit_creation_method 'critic2-4f1eba8'
_cell_length_a         4.9160000000
_cell_length_b         4.9160000000
_cell_length_c         5.4054000000
_cell_angle_alpha        90.0000
_cell_angle_beta        90.0000
_cell_angle_gamma       120.0000
_cell_volume           113.131154
_space_group_crystal_system trigonal
_space_group_IT_number 154
_space_group_name_H-M_alt 'P3_221'
_space_group_name_Hall 'P 32 2"'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,x-y,-1/3+z'
  '-x+y,-x,-2/3+z'
  'y,x,-z'
  'x-y,-y,-2/3-z'
  '-x,-x+y,-1/3-z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si     Si     0.46970000000000     0.00000000000000     0.66666667000000
O      O      0.41350000000000     0.26690000000000     0.78576667000000
