data_global _amcsd_formula_title 'Pb2[B5O9]Br' loop_ _publ_author_name 'Yakubovich O V' 'Mochenova N N' 'Dimitrova O V' 'Massa W' _journal_name_full 'Acta Crystallographica, Section E' _journal_volume 60 _journal_year 2004 _journal_page_first i127 _journal_page_last i130 _publ_section_title ; Reinvestigation of the Pb2[B5O9]Br structure based on single-crystal data ; _database_code_amcsd 0010437 _chemical_formula_sum 'Pb2 B5 O9 Br' _cell_length_a 11.4935 _cell_length_b 11.4717 _cell_length_c 6.5297 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 860.941 _exptl_crystal_density_diffrn 5.342 _symmetry_space_group_name_H-M 'P n n 2' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+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 Pb1 0.25762 0.04280 0.00433 0.01489 Pb2 0.02631 0.23505 -0.66205 0.01614 B1 0.27060 0.32170 -0.79500 0.00800 B2 0.18030 0.30090 -0.14600 0.01200 B3 0.28640 0.21800 -0.46000 0.01000 B4 0.45560 0.23540 -0.68300 0.01100 B5 0.25130 0.49500 -0.01900 0.00900 O1 0.23760 0.31350 -0.57840 0.00300 O2 0.20840 0.42480 -0.17300 0.01080 O3 0.27170 0.22560 -0.24480 0.00790 O4 0.06860 0.27530 -0.23980 0.01700 O5 0.27900 0.44870 -0.83500 0.01500 O6 0.38270 0.26160 -0.83570 0.00920 O7 0.17850 0.26980 -0.92310 0.00460 O8 0.41680 0.21100 -0.49210 0.00900 O9 0.23390 0.11030 -0.55770 0.01060 Br1 0.00000 0.00000 -0.90810 0.02890 Br2 0.00000 0.50000 -0.64760 0.02590 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 Pb1 0.01720 0.01700 0.01050 0.00110 0.00100 0.00040 Pb2 0.01870 0.01790 0.01180 -0.00130 0.00340 0.00000 Br1 0.02020 0.01540 0.05110 -0.00110 0.00000 0.00000 Br2 0.01880 0.01790 0.04110 0.00020 0.00000 0.00000