data_stdin
_audit_creation_method 'critic2-4f1eba8'
_cell_length_a         7.1356000000
_cell_length_b         7.1736000000
_cell_length_c        12.3692000000
_cell_angle_alpha        90.0000
_cell_angle_beta        90.0000
_cell_angle_gamma       120.3400
_cell_volume           546.439087
_space_group_crystal_system monoclinic
_space_group_IT_number 15
_space_group_name_H-M_alt 'C2/c'
_space_group_name_Hall '-C 2yc'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,-z'
  '-x,-1/2-y,z'
  'x,-1/2+y,-z'
  '-1/2+x,y,-1/2+z'
  '-1/2-x,-y,-1/2-z'
  '-1/2-x,-1/2-y,-1/2+z'
  '-1/2+x,-1/2+y,-1/2-z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si     Si     0.14033000000000     0.07227000000000     0.89167000000000
Si     Si     0.50682000000000     0.54077000000000     0.84201000000000
O      O      0.00000000000000     0.00000000000000     0.00000000000000
O      O      0.50000000000000     0.75000000000000     0.88370000000000
O      O      0.26600000000000     0.94010000000000     0.87660000000000
O      O      0.31140000000000     0.32820000000000     0.89620000000000
O      O      0.01720000000000     0.47820000000000     0.78830000000000
