The structure described by Na2LaSiO5 crystallizes in the orthorhombic Pnma space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. La(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(4), and four equivalent O(1) atoms. Si(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted see-saw-like geometry to four equivalent Na(1) and two equivalent La(1) atoms. In the second O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent La(1), and one Si(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to four equivalent Na(1), one La(1), and one Si(1) atom. In the fourth O site, O(3) is bonded in a 1-coordinate geometry to four equivalent Na(1), one La(1), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2LaSiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.750
_cell_length_b   7.550
_cell_length_c   9.593
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.843
_cell_formula_units_Z   4
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  0.873  0.533  0.334  1.0
  Na  Na1  1  0.627  0.967  0.834  1.0
  Na  Na2  1  0.127  0.033  0.666  1.0
  Na  Na3  1  0.373  0.467  0.166  1.0
  Na  Na4  1  0.127  0.467  0.666  1.0
  Na  Na5  1  0.373  0.033  0.166  1.0
  Na  Na6  1  0.873  0.967  0.334  1.0
  Na  Na7  1  0.627  0.533  0.834  1.0
  La  La8  1  0.384  0.750  0.455  1.0
  La  La9  1  0.116  0.750  0.955  1.0
  La  La10  1  0.616  0.250  0.545  1.0
  La  La11  1  0.884  0.250  0.045  1.0
  Si  Si12  1  0.683  0.750  0.100  1.0
  Si  Si13  1  0.817  0.750  0.600  1.0
  Si  Si14  1  0.317  0.250  0.900  1.0
  Si  Si15  1  0.183  0.250  0.400  1.0
  O  O16  1  0.820  0.575  0.061  1.0
  O  O17  1  0.680  0.925  0.561  1.0
  O  O18  1  0.180  0.075  0.939  1.0
  O  O19  1  0.320  0.425  0.439  1.0
  O  O20  1  0.180  0.425  0.939  1.0
  O  O21  1  0.320  0.075  0.439  1.0
  O  O22  1  0.820  0.925  0.061  1.0
  O  O23  1  0.680  0.575  0.561  1.0
  O  O24  1  0.478  0.750  0.006  1.0
  O  O25  1  0.022  0.750  0.506  1.0
  O  O26  1  0.522  0.250  0.994  1.0
  O  O27  1  0.978  0.250  0.494  1.0
  O  O28  1  0.629  0.750  0.267  1.0
  O  O29  1  0.871  0.750  0.767  1.0
  O  O30  1  0.371  0.250  0.733  1.0
  O  O31  1  0.129  0.250  0.233  1.0
  O  O32  1  0.210  0.750  0.213  1.0
  O  O33  1  0.290  0.750  0.713  1.0
  O  O34  1  0.790  0.250  0.787  1.0
  O  O35  1  0.710  0.250  0.287  1.0
[/CIF]
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The structure described by Na2LaSiO5 crystallizes in the orthorhombic Pnma space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. La(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(4), and four equivalent O(1) atoms. Si(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted see-saw-like geometry to four equivalent Na(1) and two equivalent La(1) atoms. In the second O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent La(1), and one Si(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to four equivalent Na(1), one La(1), and one Si(1) atom. In the fourth O site, O(3) is bonded in a 1-coordinate geometry to four equivalent Na(1), one La(1), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2LaSiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.750
_cell_length_b   7.550
_cell_length_c   9.593
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.843
_cell_formula_units_Z   4
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  0.873  0.533  0.334  1.0
  Na  Na1  1  0.627  0.967  0.834  1.0
  Na  Na2  1  0.127  0.033  0.666  1.0
  Na  Na3  1  0.373  0.467  0.166  1.0
  Na  Na4  1  0.127  0.467  0.666  1.0
  Na  Na5  1  0.373  0.033  0.166  1.0
  Na  Na6  1  0.873  0.967  0.334  1.0
  Na  Na7  1  0.627  0.533  0.834  1.0
  La  La8  1  0.384  0.750  0.455  1.0
  La  La9  1  0.116  0.750  0.955  1.0
  La  La10  1  0.616  0.250  0.545  1.0
  La  La11  1  0.884  0.250  0.045  1.0
  Si  Si12  1  0.683  0.750  0.100  1.0
  Si  Si13  1  0.817  0.750  0.600  1.0
  Si  Si14  1  0.317  0.250  0.900  1.0
  Si  Si15  1  0.183  0.250  0.400  1.0
  O  O16  1  0.820  0.575  0.061  1.0
  O  O17  1  0.680  0.925  0.561  1.0
  O  O18  1  0.180  0.075  0.939  1.0
  O  O19  1  0.320  0.425  0.439  1.0
  O  O20  1  0.180  0.425  0.939  1.0
  O  O21  1  0.320  0.075  0.439  1.0
  O  O22  1  0.820  0.925  0.061  1.0
  O  O23  1  0.680  0.575  0.561  1.0
  O  O24  1  0.478  0.750  0.006  1.0
  O  O25  1  0.022  0.750  0.506  1.0
  O  O26  1  0.522  0.250  0.994  1.0
  O  O27  1  0.978  0.250  0.494  1.0
  O  O28  1  0.629  0.750  0.267  1.0
  O  O29  1  0.871  0.750  0.767  1.0
  O  O30  1  0.371  0.250  0.733  1.0
  O  O31  1  0.129  0.250  0.233  1.0
  O  O32  1  0.210  0.750  0.213  1.0
  O  O33  1  0.290  0.750  0.713  1.0
  O  O34  1  0.790  0.250  0.787  1.0
  O  O35  1  0.710  0.250  0.287  1.0
[/CIF]
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