data_global _chemical_name_mineral 'Kukharenkoite-(Ce)' loop_ _publ_author_name 'Krivovichev S V' 'Filatov S K' 'Zaitsev A N' _journal_name_full 'The Canadian Mineralogist' _journal_volume 36 _journal_year 1998 _journal_page_first 809 _journal_page_last 815 _publ_section_title ; The crystal structure of kukharenkoite-(Ce), Ba2REE(CO3)3F,and an interpretation based on cation-coordinated F tetrahedra ; _database_code_amcsd 0005546 _chemical_formula_sum 'Ba2 Ce F C3 O9' _cell_length_a 13.374 _cell_length_b 5.1011 _cell_length_c 6.653 _cell_angle_alpha 90 _cell_angle_beta 106.56 _cell_angle_gamma 90 _cell_volume 435.056 _exptl_crystal_density_diffrn 4.686 _symmetry_space_group_name_H-M 'P 1 21/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-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 Ba1 0.07490 0.25000 0.29000 0.01750 Ba2 0.41615 0.25000 0.68880 0.01700 Ce 0.76096 0.25000 0.98840 0.01460 F 0.92830 0.25000 0.91100 0.02700 C1 0.72590 0.25000 0.50900 0.01800 C2 0.42680 0.25000 0.17400 0.01900 C3 0.12730 0.25000 0.79400 0.01900 O1 0.18260 0.25000 0.99100 0.02500 O2 0.69960 0.25000 0.31000 0.03000 O3 0.48990 0.25000 0.35800 0.02400 O4 0.39930 0.03100 0.07700 0.02600 O5 0.26250 0.96500 0.38600 0.02600 O6 0.89690 0.97000 0.30000 0.02500 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 Ba1 0.01810 0.01720 0.01680 0.00000 0.00420 0.00000 Ba2 0.02060 0.01420 0.01520 0.00000 0.00340 0.00000 Ce 0.01770 0.01130 0.01420 0.00000 0.00360 0.00000 F 0.03200 0.02400 0.02300 0.00000 0.00400 0.00000 C1 0.02000 0.01200 0.02100 0.00000 0.00000 0.00000 C2 0.02400 0.01200 0.02200 0.00000 0.00900 0.00000 C3 0.01900 0.02200 0.01600 0.00000 0.00400 0.00000 O1 0.03700 0.02000 0.01300 0.00000 0.00100 0.00000 O2 0.03800 0.03800 0.01400 0.00000 0.00700 0.00000 O3 0.03200 0.02100 0.01700 0.00000 0.00300 0.00000 O4 0.03000 0.01900 0.02900 -0.00300 0.00900 -0.00500 O5 0.03200 0.01400 0.02700 0.00000 0.00000 0.00300 O6 0.03700 0.01500 0.02200 -0.00500 0.00400 -0.00400