data_global _amcsd_formula_title 'Li2O2' loop_ _publ_author_name 'Wyckoff R W G' _journal_name_full 'Crystal Structures' _journal_volume 1 _journal_year 1963 _journal_page_first 85 _journal_page_last 237 _publ_section_title ; Second edition. Interscience Publishers, New York, New York Lithium peroxide ; _database_code_amcsd 0011665 _chemical_formula_sum 'Li O' _cell_length_a 3.142 _cell_length_b 3.142 _cell_length_c 7.650 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 65.404 _exptl_crystal_density_diffrn 2.330 _symmetry_space_group_name_H-M 'P -6' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x+y,-x,-z' '-y,x-y,z' 'x,y,-z' '-x+y,-x,z' '-y,x-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Li1 0.00000 0.00000 0.00000 Li2 0.33333 0.66667 0.50000 Li3 0.66667 0.33333 0.25000 O1 0.00000 0.00000 0.40100 O2 0.33333 0.66667 0.10000