data_rock_salt_idealised
_audit_creation_method            'Novus Examples synthetic fixture'
_chemical_name_common             'idealised rock-salt structure model'
_chemical_formula_sum             'Cl1 Na1'
_chemical_formula_weight          58.44
_cell_length_a                    5.64020
_cell_length_b                    5.64020
_cell_length_c                    5.64020
_cell_angle_alpha                 90.0000
_cell_angle_beta                  90.0000
_cell_angle_gamma                 90.0000
_cell_volume                      179.426
_cell_formula_units_Z             4
_space_group_name_H-M_alt         'F m -3 m'
_space_group_IT_number            225
_diffrn_ambient_temperature       ?

loop_
_space_group_symop_operation_xyz
  'x, y, z'
  '-x, -y, z'
  '-x, y, -z'
  'x, -y, -z'
  'z, x, y'
  'y, z, x'

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
  Na1  Na  0.00000  0.00000  0.00000  1.000  0.01500
  Cl1  Cl  0.50000  0.00000  0.00000  1.000  0.01500

# This is a textbook lattice model, not a refined experimental structure.
