data_image0 _chemical_formula_structural Cu2Se4 _chemical_formula_sum "Cu2 Se4" _cell_length_a 5.021821 _cell_length_b 6.181988 _cell_length_c 3.750349 _cell_angle_alpha 90.0 _cell_angle_beta 90.0 _cell_angle_gamma 90.0 _space_group_name_H-M_alt "P 1" _space_group_IT_number 1 loop_ _space_group_symop_operation_xyz 'x, y, z' loop_ _atom_site_type_symbol _atom_site_label _atom_site_symmetry_multiplicity _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Cu Cu1 1.0 0.499999900434524 0.499999352958951 0.49999880011167 1.0000 Cu Cu2 1.0 0.0 0.0 0.0 1.0000 Se Se1 1.0 0.186699207319417 0.383138886714112 0.0 1.0000 Se Se2 1.0 0.813302584859158 0.61685981920379 0.0 1.0000 Se Se3 1.0 0.686701099063467 0.11686046624483902 0.49999880011167 1.0000 Se Se4 1.0 0.313300693115107 0.883139857275685 0.49999880011167 1.0000