data_9016196
_publ_section_title
;
 Neutron Diffraction Study of Ammonium Perchlorate
 _cod_database_code 1008111
;
_journal_name_full               'Acta Crystallographica'
_journal_page_first              1201
_journal_page_last               1206
_journal_volume                  15
_journal_year                    1962
_chemical_formula_sum            'Cl N O4'
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   9.2
_cell_length_b                   5.82
_cell_length_c                   7.45
_cell_volume                     398.903
_database_code_amcsd             0016053
_exptl_crystal_density_diffrn    1.889
_[local]_cod_chemical_formula_sum_orig 'N Cl O4'
_cod_database_code               9016196
_amcsd_formula_title             'Cl H4 N O4'
loop_
_space_group_symop_operation_xyz
x,y,z
x,1/2-y,z
-x,1/2+y,-z
1/2-x,1/2+y,1/2+z
1/2+x,1/2-y,1/2-z
1/2+x,y,1/2-z
1/2-x,-y,1/2+z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
N1 0.18200 0.75000 0.16600
Cl1 0.43200 0.25000 0.19300
O1 0.31400 0.25000 0.06100
O2 0.57000 0.25000 0.10700
O3 0.41800 0.05300 0.30300
