The material structure described by NaNbGeO5 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms. Nb(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form GeO4 tetrahedra that share corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-56°. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), one Nb(1), and one Ge(1) atom to form distorted edge-sharing ONa2NbGe tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Nb(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Na(1), one Nb(1), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1) and two equivalent Nb(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1), one Nb(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_NaNbGeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.016
_cell_length_b   6.945
_cell_length_c   7.698
_cell_angle_alpha   64.190
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   433.885
_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  0.581  0.241  0.796  1.0
  Na  Na1  1  0.419  0.759  0.204  1.0
  Na  Na2  1  0.081  0.759  0.704  1.0
  Na  Na3  1  0.919  0.241  0.296  1.0
  Nb  Nb4  1  0.739  0.741  0.478  1.0
  Nb  Nb5  1  0.261  0.259  0.522  1.0
  Nb  Nb6  1  0.761  0.741  0.978  1.0
  Nb  Nb7  1  0.239  0.259  0.022  1.0
  Ge  Ge8  1  0.064  0.754  0.248  1.0
  Ge  Ge9  1  0.436  0.754  0.748  1.0
  Ge  Ge10  1  0.936  0.246  0.752  1.0
  Ge  Ge11  1  0.564  0.246  0.252  1.0
  O  O12  1  0.548  0.845  0.888  1.0
  O  O13  1  0.048  0.155  0.612  1.0
  O  O14  1  0.452  0.155  0.112  1.0
  O  O15  1  0.952  0.845  0.388  1.0
  O  O16  1  0.954  0.642  0.124  1.0
  O  O17  1  0.454  0.358  0.376  1.0
  O  O18  1  0.046  0.358  0.876  1.0
  O  O19  1  0.546  0.642  0.624  1.0
  O  O20  1  0.683  0.046  0.414  1.0
  O  O21  1  0.183  0.954  0.086  1.0
  O  O22  1  0.317  0.954  0.586  1.0
  O  O23  1  0.817  0.046  0.914  1.0
  O  O24  1  0.679  0.747  0.248  1.0
  O  O25  1  0.179  0.253  0.252  1.0
  O  O26  1  0.321  0.253  0.752  1.0
  O  O27  1  0.821  0.747  0.748  1.0
  O  O28  1  0.690  0.438  0.094  1.0
  O  O29  1  0.190  0.562  0.406  1.0
  O  O30  1  0.310  0.562  0.906  1.0
  O  O31  1  0.810  0.438  0.594  1.0
[/CIF]
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The material structure described by NaNbGeO5 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms. Nb(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form GeO4 tetrahedra that share corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-56°. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), one Nb(1), and one Ge(1) atom to form distorted edge-sharing ONa2NbGe tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Nb(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Na(1), one Nb(1), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Na(1) and two equivalent Nb(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1), one Nb(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_NaNbGeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.016
_cell_length_b   6.945
_cell_length_c   7.698
_cell_angle_alpha   64.190
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   433.885
_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  0.581  0.241  0.796  1.0
  Na  Na1  1  0.419  0.759  0.204  1.0
  Na  Na2  1  0.081  0.759  0.704  1.0
  Na  Na3  1  0.919  0.241  0.296  1.0
  Nb  Nb4  1  0.739  0.741  0.478  1.0
  Nb  Nb5  1  0.261  0.259  0.522  1.0
  Nb  Nb6  1  0.761  0.741  0.978  1.0
  Nb  Nb7  1  0.239  0.259  0.022  1.0
  Ge  Ge8  1  0.064  0.754  0.248  1.0
  Ge  Ge9  1  0.436  0.754  0.748  1.0
  Ge  Ge10  1  0.936  0.246  0.752  1.0
  Ge  Ge11  1  0.564  0.246  0.252  1.0
  O  O12  1  0.548  0.845  0.888  1.0
  O  O13  1  0.048  0.155  0.612  1.0
  O  O14  1  0.452  0.155  0.112  1.0
  O  O15  1  0.952  0.845  0.388  1.0
  O  O16  1  0.954  0.642  0.124  1.0
  O  O17  1  0.454  0.358  0.376  1.0
  O  O18  1  0.046  0.358  0.876  1.0
  O  O19  1  0.546  0.642  0.624  1.0
  O  O20  1  0.683  0.046  0.414  1.0
  O  O21  1  0.183  0.954  0.086  1.0
  O  O22  1  0.317  0.954  0.586  1.0
  O  O23  1  0.817  0.046  0.914  1.0
  O  O24  1  0.679  0.747  0.248  1.0
  O  O25  1  0.179  0.253  0.252  1.0
  O  O26  1  0.321  0.253  0.752  1.0
  O  O27  1  0.821  0.747  0.748  1.0
  O  O28  1  0.690  0.438  0.094  1.0
  O  O29  1  0.190  0.562  0.406  1.0
  O  O30  1  0.310  0.562  0.906  1.0
  O  O31  1  0.810  0.438  0.594  1.0
[/CIF]
.