data_1010892
_publ_section_title
;
The Crystal Structure of Potassium Persulfate K₂ S₂ O₈
;
_journal_coden_ASTM              ZEKGAX
_journal_name_full
;
Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik,
Kristallchemie (-144,1977)
;
_journal_page_first              129
_journal_page_last               135
_journal_volume                  91
_journal_year                    1935
_chemical_formula_structural     'K2 S2 O8'
_chemical_formula_sum            'K2 O8 S2'
_chemical_name_systematic        'Potassium peroxodisulfate'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                106.9
_cell_angle_beta                 90.17
_cell_angle_gamma                102.6
_cell_formula_units_Z            1
_cell_length_a                   5.1
_cell_length_b                   6.83
_cell_length_c                   5.4
_cell_volume                     175.2
_cod_database_code               1010892
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,-z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
K1 K1+ 2 i 0.186 0.806 0.486 1. 0 d
O1 O1- 2 i 0.086 0.089 0.069 1. 0 d
O2 O2- 2 i 0.306 0.228 0.702 1. 0 d
O3 O2- 2 i 0.534 0.236 0.097 1. 0 d
O4 O2- 2 i 0.214 0.45 0.111 1. 0 d
S1 S6+ 2 i 0.258 0.241 0.019 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
K1+ 1.000
O1- -1.000
O2- -2.000
S6+ 6.000
