The material described by HCOONa is Ullmanite-derived structured and crystallizes in the monoclinic C2/c space group. Na(1) is bonded to six equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing NaO6 pentagonal pyramids. C(1) is bonded in a trigonal planar geometry to one H(1) and two equivalent O(1) atoms. H(1) is bonded in a single-bond geometry to one C(1) atom. O(1) is bonded in a 4-coordinate geometry to three equivalent Na(1) and one C(1) atom. is represented by the CIF file [CIF]
data_NaHCO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.676
_cell_length_b   4.676
_cell_length_c   6.235
_cell_angle_alpha   72.669
_cell_angle_beta   72.669
_cell_angle_gamma   95.248
_symmetry_Int_Tables_number   1
_cell_volume   121.745
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.863  0.137  0.750  1.0
  Na  Na1  1  0.137  0.863  0.250  1.0
  H  H2  1  0.438  0.562  0.750  1.0
  H  H3  1  0.562  0.438  0.250  1.0
  C  C4  1  0.277  0.723  0.750  1.0
  C  C5  1  0.723  0.277  0.250  1.0
  O  O6  1  0.054  0.670  0.680  1.0
  O  O7  1  0.330  0.946  0.820  1.0
  O  O8  1  0.670  0.054  0.180  1.0
  O  O9  1  0.946  0.330  0.320  1.0
[/CIF]
.
The material described by HCOONa is Ullmanite-derived structured and crystallizes in the monoclinic C2/c space group. Na(1) is bonded to six equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing NaO6 pentagonal pyramids. C(1) is bonded in a trigonal planar geometry to one H(1) and two equivalent O(1) atoms. H(1) is bonded in a single-bond geometry to one C(1) atom. O(1) is bonded in a 4-coordinate geometry to three equivalent Na(1) and one C(1) atom. is represented by the CIF file [CIF]
data_NaHCO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.676
_cell_length_b   4.676
_cell_length_c   6.235
_cell_angle_alpha   72.669
_cell_angle_beta   72.669
_cell_angle_gamma   95.248
_symmetry_Int_Tables_number   1
_cell_volume   121.745
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.863  0.137  0.750  1.0
  Na  Na1  1  0.137  0.863  0.250  1.0
  H  H2  1  0.438  0.562  0.750  1.0
  H  H3  1  0.562  0.438  0.250  1.0
  C  C4  1  0.277  0.723  0.750  1.0
  C  C5  1  0.723  0.277  0.250  1.0
  O  O6  1  0.054  0.670  0.680  1.0
  O  O7  1  0.330  0.946  0.820  1.0
  O  O8  1  0.670  0.054  0.180  1.0
  O  O9  1  0.946  0.330  0.320  1.0
[/CIF]
.