data_global _amcsd_formula_title 'Cu4Bi4S9' loop_ _publ_author_name 'Takeuchi Y' 'Ozawa T' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 141 _journal_year 1975 _journal_page_first 217 _journal_page_last 232 _publ_section_title ; The structure of Cu4Bi4S9 and its relation to the structures of covellite, CuS and bismuthinite, Bi2S3 ; _database_code_amcsd 0010774 _chemical_formula_sum 'Cu4 Bi4 S9' _cell_length_a 11.589 _cell_length_b 32.05 _cell_length_c 3.951 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1467.510 _exptl_crystal_density_diffrn 6.240 _symmetry_space_group_name_H-M 'P b n m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,z' '1/2+x,1/2-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Cu1 0.38320 0.13590 0.75000 0.04053 Cu2 0.33630 0.19110 0.25000 0.04686 Cu3 0.42470 0.30420 0.25000 0.04053 Cu4 0.39360 0.48270 0.25000 0.09119 Bi1 0.36697 0.02775 0.75000 0.02786 Bi2 0.09953 0.09028 0.25000 0.02913 Bi3 0.13895 0.27871 0.25000 0.02660 Bi4 0.23286 0.39072 0.75000 0.02660 S1 0.13270 0.02050 0.75000 0.02280 S2 0.32540 0.09870 0.25000 0.01520 S3 0.09260 0.15430 0.75000 0.02153 S4 0.24240 0.19090 0.75000 0.01646 S5 0.48510 0.23510 0.25000 0.01646 S6 0.31580 0.31430 0.75000 0.01773 S7 0.07470 0.35640 0.25000 0.02280 S8 0.38820 0.41250 0.25000 0.01646 S9 0.11950 0.47080 0.25000 0.01900 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Cu1 0.03654 0.05100 0.04486 -0.00414 0.00000 0.00000 Cu2 0.03939 0.06557 0.05195 -0.01167 0.00000 0.00000 Cu3 0.04150 0.04267 0.04195 -0.00132 0.00000 0.00000 Cu4 0.15581 0.05672 0.09903 0.00696 0.00000 0.00000 Bi1 0.02844 0.03122 0.02955 0.00132 0.00000 0.00000 Bi2 0.02769 0.03226 0.02985 -0.00094 0.00000 0.00000 Bi3 0.02633 0.02914 0.02765 0.00056 0.00000 0.00000 Bi4 0.02749 0.02862 0.02798 0.00188 0.00000 0.00000 S1 0.02361 0.02342 0.02403 -0.00339 0.00000 0.00000 S2 0.01585 0.01665 0.01636 0.00414 0.00000 0.00000 S3 0.02109 0.02394 0.02111 0.00075 0.00000 0.00000 S4 0.01504 0.01925 0.01794 -0.00339 0.00000 0.00000 S5 0.01898 0.01717 0.01890 -0.00395 0.00000 0.00000 S6 0.02082 0.01665 0.01889 -0.00056 0.00000 0.00000 S7 0.01919 0.03018 0.02592 0.00696 0.00000 0.00000 S8 0.01102 0.02862 0.01959 0.00433 0.00000 0.00000 S9 0.00912 0.04059 0.02335 -0.00395 0.00000 0.00000