data_global _amcsd_formula_title 'Ba2Cu(BO3)2' loop_ _publ_author_name 'Smith R W' 'Keszler D A' _journal_name_full 'Acta Crystallographica, Section C' _journal_volume 46 _journal_year 1990 _journal_page_first 370 _journal_page_last 372 _publ_section_title ; Structure of Ba2Cu(BO3)2 ; _database_code_amcsd 0010110 _chemical_formula_sum 'Ba2 Cu B2 O6' _cell_length_a 8.023 _cell_length_b 11.290 _cell_length_c 13.889 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1258.061 _exptl_crystal_density_diffrn 4.813 _symmetry_space_group_name_H-M 'P n m a' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-x,1/2+y,-z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' '1/2+x,y,1/2-z' '1/2-x,-y,1/2+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 0.00000 0.00000 0.00000 0.01089 Ba2 0.37931 0.25000 0.95179 0.00950 Ba3 0.16013 0.01993 0.71717 0.00874 Cu1 0.30766 0.25000 0.57279 0.01102 Cu2 0.03874 0.25000 0.30007 0.01013 B1 0.06340 0.25000 0.12900 0.01140 B2 0.48960 0.25000 0.70780 0.00760 B3 0.13370 0.42810 0.43650 0.00887 O1 0.07620 0.25000 0.70930 0.01267 O2 0.06760 0.25000 0.03360 0.01520 O3 0.43860 0.14610 0.66150 0.01140 O4 0.29930 0.47400 0.89360 0.01393 O5 0.06030 0.14720 0.18640 0.01646 O6 0.49810 0.13040 0.10550 0.01267 O7 0.19320 0.11250 0.52350 0.01267