The material structure described by Na2Sn(CO2)4 crystallizes in the monoclinic C2/c space group. Na(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form distorted edge-sharing NaO6 pentagonal pyramids. Sn(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Sn(1), and one C(2) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Na(1), one Sn(1), and one C(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Na(1) and one C(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one C(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2Sn(CO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.003
_cell_length_b   6.003
_cell_length_c   13.890
_cell_angle_alpha   73.944
_cell_angle_beta   73.944
_cell_angle_gamma   57.376
_symmetry_Int_Tables_number   1
_cell_volume   400.120
_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  0.825  0.799  0.551  1.0
  Na  Na1  1  0.175  0.201  0.449  1.0
  Na  Na2  1  0.201  0.175  0.949  1.0
  Na  Na3  1  0.799  0.825  0.051  1.0
  Sn  Sn4  1  0.824  0.176  0.750  1.0
  Sn  Sn5  1  0.176  0.824  0.250  1.0
  C  C6  1  0.331  0.360  0.134  1.0
  C  C7  1  0.360  0.331  0.634  1.0
  C  C8  1  0.640  0.669  0.366  1.0
  C  C9  1  0.418  0.605  0.890  1.0
  C  C10  1  0.582  0.395  0.110  1.0
  C  C11  1  0.669  0.640  0.866  1.0
  C  C12  1  0.395  0.582  0.610  1.0
  C  C13  1  0.605  0.418  0.390  1.0
  O  O14  1  0.527  0.121  0.685  1.0
  O  O15  1  0.179  0.350  0.598  1.0
  O  O16  1  0.210  0.764  0.940  1.0
  O  O17  1  0.473  0.879  0.315  1.0
  O  O18  1  0.407  0.446  0.359  1.0
  O  O19  1  0.821  0.650  0.402  1.0
  O  O20  1  0.554  0.593  0.141  1.0
  O  O21  1  0.764  0.210  0.440  1.0
  O  O22  1  0.593  0.554  0.641  1.0
  O  O23  1  0.236  0.790  0.560  1.0
  O  O24  1  0.446  0.407  0.859  1.0
  O  O25  1  0.121  0.527  0.185  1.0
  O  O26  1  0.879  0.473  0.815  1.0
  O  O27  1  0.350  0.179  0.098  1.0
  O  O28  1  0.650  0.821  0.902  1.0
  O  O29  1  0.790  0.236  0.060  1.0
[/CIF]
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The material structure described by Na2Sn(CO2)4 crystallizes in the monoclinic C2/c space group. Na(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form distorted edge-sharing NaO6 pentagonal pyramids. Sn(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1), one Sn(1), and one C(2) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Na(1), one Sn(1), and one C(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Na(1) and one C(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one C(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2Sn(CO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.003
_cell_length_b   6.003
_cell_length_c   13.890
_cell_angle_alpha   73.944
_cell_angle_beta   73.944
_cell_angle_gamma   57.376
_symmetry_Int_Tables_number   1
_cell_volume   400.120
_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  0.825  0.799  0.551  1.0
  Na  Na1  1  0.175  0.201  0.449  1.0
  Na  Na2  1  0.201  0.175  0.949  1.0
  Na  Na3  1  0.799  0.825  0.051  1.0
  Sn  Sn4  1  0.824  0.176  0.750  1.0
  Sn  Sn5  1  0.176  0.824  0.250  1.0
  C  C6  1  0.331  0.360  0.134  1.0
  C  C7  1  0.360  0.331  0.634  1.0
  C  C8  1  0.640  0.669  0.366  1.0
  C  C9  1  0.418  0.605  0.890  1.0
  C  C10  1  0.582  0.395  0.110  1.0
  C  C11  1  0.669  0.640  0.866  1.0
  C  C12  1  0.395  0.582  0.610  1.0
  C  C13  1  0.605  0.418  0.390  1.0
  O  O14  1  0.527  0.121  0.685  1.0
  O  O15  1  0.179  0.350  0.598  1.0
  O  O16  1  0.210  0.764  0.940  1.0
  O  O17  1  0.473  0.879  0.315  1.0
  O  O18  1  0.407  0.446  0.359  1.0
  O  O19  1  0.821  0.650  0.402  1.0
  O  O20  1  0.554  0.593  0.141  1.0
  O  O21  1  0.764  0.210  0.440  1.0
  O  O22  1  0.593  0.554  0.641  1.0
  O  O23  1  0.236  0.790  0.560  1.0
  O  O24  1  0.446  0.407  0.859  1.0
  O  O25  1  0.121  0.527  0.185  1.0
  O  O26  1  0.879  0.473  0.815  1.0
  O  O27  1  0.350  0.179  0.098  1.0
  O  O28  1  0.650  0.821  0.902  1.0
  O  O29  1  0.790  0.236  0.060  1.0
[/CIF]
.