data_global _chemical_name_mineral 'Natron' loop_ _publ_author_name 'Taga T' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 25 _journal_year 1969 _journal_page_first 2656 _journal_page_last 2657 _publ_section_title ; Crystal structure of Na2CO3*10H2O ; _database_code_amcsd 0009366 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Na2 C O13 H20' _cell_length_a 12.83 _cell_length_b 9.026 _cell_length_c 13.44 _cell_angle_alpha 90 _cell_angle_beta 123.0 _cell_angle_gamma 90 _cell_volume 1305.307 _exptl_crystal_density_diffrn 1.456 _symmetry_space_group_name_H-M 'C 1 c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Na1 0.24000 0.22500 0.12800 1.00000 0.02153 Na2 0.25200 0.27000 -0.12800 1.00000 0.02406 C 0.25000 0.75400 0.00000 1.00000 0.01267 O11* 0.26600 0.71800 0.09700 0.50000 0.04433 O12* 0.34400 0.79300 -0.00300 0.50000 0.03166 O13* 0.13900 0.79400 -0.09600 0.50000 0.02533 O11* 0.25300 0.83400 -0.07300 0.50000 0.05826 O12* 0.15100 0.67500 -0.00100 0.50000 0.04813 O13* 0.33600 0.80900 0.09300 0.50000 0.05193 Wat1 0.12500 -0.01200 0.09100 1.00000 0.03800 Wat2 0.37600 -0.44000 0.20800 1.00000 0.02533 Wat3 0.09300 0.31200 0.17500 1.00000 0.02153 Wat4 0.37400 0.12100 0.32200 1.00000 0.02280 Wat5 0.13900 0.37400 -0.05800 1.00000 0.02786 Wat6 0.35500 0.12500 0.04700 1.00000 0.02533 Wat7 0.12800 0.04900 -0.21500 1.00000 0.03166 Wat8 0.37200 0.50200 -0.08000 1.00000 0.03040 Wat9 0.12000 0.37600 -0.33200 1.00000 0.03420 Wat10 0.39900 0.18700 -0.18600 1.00000 0.03420