data_9011304
_publ_section_title
;
 Sodium carbonate revisited
 Locality: synthetic
 Sample: Gamma phase, T = 295 K
;
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              337
_journal_page_last               352
_journal_volume                  59
_journal_year                    2003
_chemical_formula_sum            'C Na2 O3'
_chemical_name_mineral           Natrite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 101.35
_cell_angle_gamma                90
_cell_length_a                   8.920
_cell_length_b                   5.245
_cell_length_c                   6.050
_cell_volume                     277.516
_diffrn_ambient_temperature      295
_exptl_crystal_density_diffrn    2.537
_[local]_cod_chemical_formula_sum_orig 'Na2 C O3'
_cod_database_code               9011304
loop_
_symmetry_equiv_pos_as_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_U_iso_or_equiv
Na1 0.00000 0.00000 0.00000 0.01731
Na2 0.00000 0.00000 0.50000 0.01673
Na3 0.17055 0.50000 0.74801 0.02554
C 0.16446 0.50000 0.24914 0.01155
O1 0.10159 0.29384 0.28535 0.02607
O2 0.28987 0.50000 0.17757 0.02274
