The material described by Na2Be2O3 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Be(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing BeO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Na(1) and two equivalent Be(1) atoms to form distorted corner-sharing ONa4Be2 octahedra. The corner-sharing octahedral tilt angles are 66°. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Na(1) and three equivalent Be(1) atoms. is represented by the CIF file [CIF]
data_Na2Be2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.312
_cell_length_b   4.943
_cell_length_c   5.361
_cell_angle_alpha   66.924
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   129.506
_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  0.372  0.810  0.928  1.0
  Na  Na1  1  0.128  0.810  0.428  1.0
  Na  Na2  1  0.872  0.190  0.572  1.0
  Na  Na3  1  0.628  0.190  0.072  1.0
  Be  Be4  1  0.603  0.671  0.569  1.0
  Be  Be5  1  0.103  0.329  0.931  1.0
  Be  Be6  1  0.897  0.671  0.069  1.0
  Be  Be7  1  0.397  0.329  0.431  1.0
  O  O8  1  0.500  0.000  0.500  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.854  0.590  0.791  1.0
  O  O11  1  0.354  0.410  0.709  1.0
  O  O12  1  0.646  0.590  0.291  1.0
  O  O13  1  0.146  0.410  0.209  1.0
[/CIF]
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The material described by Na2Be2O3 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Be(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of corner and edge-sharing BeO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Na(1) and two equivalent Be(1) atoms to form distorted corner-sharing ONa4Be2 octahedra. The corner-sharing octahedral tilt angles are 66°. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Na(1) and three equivalent Be(1) atoms. is represented by the CIF file [CIF]
data_Na2Be2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.312
_cell_length_b   4.943
_cell_length_c   5.361
_cell_angle_alpha   66.924
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   129.506
_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  0.372  0.810  0.928  1.0
  Na  Na1  1  0.128  0.810  0.428  1.0
  Na  Na2  1  0.872  0.190  0.572  1.0
  Na  Na3  1  0.628  0.190  0.072  1.0
  Be  Be4  1  0.603  0.671  0.569  1.0
  Be  Be5  1  0.103  0.329  0.931  1.0
  Be  Be6  1  0.897  0.671  0.069  1.0
  Be  Be7  1  0.397  0.329  0.431  1.0
  O  O8  1  0.500  0.000  0.500  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.854  0.590  0.791  1.0
  O  O11  1  0.354  0.410  0.709  1.0
  O  O12  1  0.646  0.590  0.291  1.0
  O  O13  1  0.146  0.410  0.209  1.0
[/CIF]
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