# generated using pymatgen data_Na3(CuSe)4 _symmetry_space_group_name_H-M 'P 1' _cell_length_a 3.81192940 _cell_length_b 7.56249340 _cell_length_c 14.97253278 _cell_angle_alpha 90.00000000 _cell_angle_beta 90.00000000 _cell_angle_gamma 90.00000000 _symmetry_Int_Tables_number 1 _chemical_formula_structural Na3(CuSe)4 _chemical_formula_sum 'Na6 Cu8 Se8' _cell_volume 431.62354780 _cell_formula_units_Z 2 loop_ _symmetry_equiv_pos_site_id _symmetry_equiv_pos_as_xyz 1 '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 Na Na0 1 0.00000000 0.46423030 0.74292729 1.0 Na Na1 1 0.00000000 0.53576970 0.25707271 1.0 Na Na2 1 0.00000000 0.03576970 0.24292729 1.0 Na Na3 1 0.50000000 0.50000000 0.50000000 1.0 Na Na4 1 0.50000000 0.00000000 0.00000000 1.0 Na Na5 1 0.00000000 0.96423030 0.75707271 1.0 Cu Cu6 1 0.50000000 0.91537907 0.57621766 1.0 Cu Cu7 1 0.00000000 0.35256158 0.05100124 1.0 Cu Cu8 1 0.50000000 0.41537907 0.92378234 1.0 Cu Cu9 1 0.00000000 0.85256158 0.44899876 1.0 Cu Cu10 1 0.50000000 0.08462093 0.42378234 1.0 Cu Cu11 1 0.00000000 0.14743842 0.55100124 1.0 Cu Cu12 1 0.00000000 0.64743842 0.94899876 1.0 Cu Cu13 1 0.50000000 0.58462093 0.07621766 1.0 Se Se14 1 0.50000000 0.79389150 0.35301214 1.0 Se Se15 1 0.50000000 0.70610850 0.85301214 1.0 Se Se16 1 0.50000000 0.29389150 0.14698786 1.0 Se Se17 1 0.00000000 0.73037114 0.59901377 1.0 Se Se18 1 0.00000000 0.23037114 0.90098623 1.0 Se Se19 1 0.00000000 0.26962886 0.40098623 1.0 Se Se20 1 0.00000000 0.76962886 0.09901377 1.0 Se Se21 1 0.50000000 0.20610850 0.64698786 1.0