The material structure described by Na2MgNb2O6 crystallizes in the triclinic P1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Mg(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom. In the third O site, O(3) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom. In the sixth O site, O(6) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2MgNb2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.315
_cell_length_b   5.521
_cell_length_c   6.320
_cell_angle_alpha   60.169
_cell_angle_beta   66.157
_cell_angle_gamma   59.736
_symmetry_Int_Tables_number   1
_cell_volume   135.998
_cell_formula_units_Z   1
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  0.371  0.403  0.878  1.0
  Na  Na1  1  0.640  0.663  0.110  1.0
  Mg  Mg2  1  0.007  0.033  0.991  1.0
  Nb  Nb3  1  0.221  0.189  0.460  1.0
  Nb  Nb4  1  0.792  0.876  0.523  1.0
  O  O5  1  0.987  0.182  0.255  1.0
  O  O6  1  0.185  0.605  0.267  1.0
  O  O7  1  0.602  0.014  0.225  1.0
  O  O8  1  0.028  0.883  0.727  1.0
  O  O9  1  0.829  0.460  0.712  1.0
  O  O10  1  0.412  0.054  0.757  1.0
[/CIF]
.
The material structure described by Na2MgNb2O6 crystallizes in the triclinic P1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Mg(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom. In the third O site, O(3) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom. In the sixth O site, O(6) is bonded to one Na(1), one Na(2), one Mg(1), one Nb(1), and one Nb(2) atom to form a mixture of distorted corner and edge-sharing ONa2MgNb2 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2MgNb2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.315
_cell_length_b   5.521
_cell_length_c   6.320
_cell_angle_alpha   60.169
_cell_angle_beta   66.157
_cell_angle_gamma   59.736
_symmetry_Int_Tables_number   1
_cell_volume   135.998
_cell_formula_units_Z   1
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  0.371  0.403  0.878  1.0
  Na  Na1  1  0.640  0.663  0.110  1.0
  Mg  Mg2  1  0.007  0.033  0.991  1.0
  Nb  Nb3  1  0.221  0.189  0.460  1.0
  Nb  Nb4  1  0.792  0.876  0.523  1.0
  O  O5  1  0.987  0.182  0.255  1.0
  O  O6  1  0.185  0.605  0.267  1.0
  O  O7  1  0.602  0.014  0.225  1.0
  O  O8  1  0.028  0.883  0.727  1.0
  O  O9  1  0.829  0.460  0.712  1.0
  O  O10  1  0.412  0.054  0.757  1.0
[/CIF]
.