data_9008989
_publ_section_title
;
 Second edition. Interscience Publishers, New York, New York
 Potassium peroxide
;
_journal_name_full               'Crystal Structures'
_journal_page_first              85
_journal_page_last               237
_journal_volume                  1
_journal_year                    1963
_chemical_formula_structural     K2O2
_chemical_formula_sum            'K2 O2'
_space_group_IT_number           64
_symmetry_space_group_name_Hall  '-C 2ac 2'
_symmetry_space_group_name_H-M   'C m c a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   6.736
_cell_length_b                   7.001
_cell_length_c                   6.479
_cell_volume                     305.541
_exptl_crystal_density_diffrn    2.396
_cod_database_code               9008989
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,z
x,1/2-y,1/2+z
1/2+x,-y,1/2+z
-x,1/2+y,1/2-z
1/2-x,+y,1/2-z
-x,y,z
1/2-x,1/2+y,z
x,-y,-z
1/2+x,1/2-y,-z
x,1/2+y,1/2-z
1/2+x,+y,1/2-z
-x,1/2-y,1/2+z
1/2-x,-y,1/2+z
-x,-y,-z
1/2-x,1/2-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
K 0.25000 0.16000 0.25000
O 0.00000 0.08800 0.93400
