# generated using pymatgen data_NaCa(Cu9Si4)2 _symmetry_space_group_name_H-M 'P 1' _cell_length_a 8.07591233 _cell_length_b 8.07591142 _cell_length_c 8.07591101 _cell_angle_alpha 120.39492942 _cell_angle_beta 120.39492350 _cell_angle_gamma 89.31731496 _symmetry_Int_Tables_number 1 _chemical_formula_structural NaCa(Cu9Si4)2 _chemical_formula_sum 'Na1 Ca1 Cu18 Si8' _cell_volume 370.19116841 _cell_formula_units_Z 1 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 0.25000000 0.25000000 0.00000000 1.0 Ca Ca1 1 0.75000000 0.75000000 0.00000000 1.0 Cu Cu2 1 0.93432733 0.20328980 0.13837586 1.0 Cu Cu3 1 0.20328980 0.06491494 0.26896247 1.0 Cu Cu4 1 0.79595247 0.93432733 0.73103753 1.0 Cu Cu5 1 0.43508506 0.29671020 0.73103753 1.0 Cu Cu6 1 0.06491494 0.79595247 0.86162414 1.0 Cu Cu7 1 0.80836696 0.05979903 0.50042411 1.0 Cu Cu8 1 0.55937292 0.30794184 0.49957589 1.0 Cu Cu9 1 0.19205816 0.94062708 0.50042411 1.0 Cu Cu10 1 0.44020097 0.69163304 0.49957589 1.0 Cu Cu11 1 0.94062708 0.44020097 0.74856693 1.0 Cu Cu12 1 0.69163304 0.19205816 0.25143307 1.0 Cu Cu13 1 0.05979903 0.55937292 0.25143307 1.0 Cu Cu14 1 0.70404753 0.43508506 0.13837586 1.0 Cu Cu15 1 0.56567267 0.70404753 0.26896247 1.0 Cu Cu16 1 0.50000000 0.00000000 0.50000000 1.0 Cu Cu17 1 0.00000000 0.50000000 0.50000000 1.0 Cu Cu18 1 0.30794184 0.80836696 0.74856693 1.0 Cu Cu19 1 0.29671020 0.56567267 0.86162414 1.0 Si Si20 1 0.79224518 0.29169917 0.85220746 1.0 Si Si21 1 0.55996229 0.06050830 0.85220746 1.0 Si Si22 1 0.06050830 0.20830083 0.50054601 1.0 Si Si23 1 0.29169917 0.43949170 0.49945399 1.0 Si Si24 1 0.94003771 0.79224518 0.50054601 1.0 Si Si25 1 0.43949170 0.94003771 0.14779254 1.0 Si Si26 1 0.20830083 0.70775482 0.14779254 1.0 Si Si27 1 0.70775482 0.55996229 0.49945399 1.0