data_global _amcsd_formula_title 'Ba0.45 Na1.7 O13 Ti5.85' loop_ _publ_author_name 'Hervieu M' 'Germain P' 'Desgardin G' 'Raveau B' _journal_name_full 'Materials Research Bulletin' _journal_volume 14 _journal_year 1979 _journal_page_first 267 _journal_page_last 272 _publ_section_title ; Non-stoichiometric titanates (A2-2x)(Ba3x)(Ti6-x)O13 with a tunnel structure _cod_database_code 1001285 ; _database_code_amcsd 0014270 _chemical_formula_sum 'Na1.7 Ba.452 Ti5.85 O13' _cell_length_a 15.183 _cell_length_b 3.783 _cell_length_c 9.143 _cell_angle_alpha 90 _cell_angle_beta 98.7 _cell_angle_gamma 90 _cell_volume 519.107 _exptl_crystal_density_diffrn 3.770 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Na1 0.45300 0.05800 0.24200 0.01500 Ba1 0.45300 0.05800 0.24200 0.00800 Na2 0.55800 0.00000 0.48300 0.82000 Ba2 0.55800 0.00000 0.48300 0.21000 Ti1 0.11900 0.00000 0.09700 0.97500 Ti2 0.17000 0.00000 0.43900 0.97500 Ti3 0.22800 0.00000 0.77100 0.97500 O1 0.00000 0.00000 0.00000 1.00000 O2 0.23800 0.00000 0.25100 1.00000 O3 0.07600 0.00000 0.26600 1.00000 O4 0.29200 0.00000 0.57100 1.00000 O5 0.13000 0.00000 0.60400 1.00000 O6 0.36100 0.00000 0.89800 1.00000 O7 0.17000 0.00000 0.91900 1.00000