The crystal structure described by Na2TiGeO5 crystallizes in the tetragonal P4/nmm space group. Na(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, and edges with four equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles are 57°. Ti(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. Ge(1) is bonded to four equivalent O(1) atoms to form GeO4 tetrahedra that share corners with eight equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles are 62°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na(1), one Ti(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to four equivalent Na(1) and one Ti(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2TiGeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.719
_cell_length_b   6.719
_cell_length_c   5.238
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   236.440
_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  0.750  0.250  0.000  1.0
  Na  Na1  1  0.750  0.750  0.000  1.0
  Na  Na2  1  0.250  0.750  0.000  1.0
  Na  Na3  1  0.250  0.250  0.000  1.0
  Ti  Ti4  1  0.500  0.000  0.572  1.0
  Ti  Ti5  1  0.000  0.500  0.428  1.0
  Ge  Ge6  1  0.500  0.500  0.500  1.0
  Ge  Ge7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.216  0.000  0.694  1.0
  O  O9  1  0.784  0.000  0.694  1.0
  O  O10  1  0.500  0.716  0.694  1.0
  O  O11  1  0.500  0.284  0.694  1.0
  O  O12  1  0.000  0.216  0.306  1.0
  O  O13  1  0.716  0.500  0.306  1.0
  O  O14  1  0.284  0.500  0.306  1.0
  O  O15  1  0.000  0.784  0.306  1.0
  O  O16  1  0.000  0.500  0.756  1.0
  O  O17  1  0.500  0.000  0.244  1.0
[/CIF]
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The crystal structure described by Na2TiGeO5 crystallizes in the tetragonal P4/nmm space group. Na(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Ge(1)O4 tetrahedra, and edges with four equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles are 57°. Ti(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. Ge(1) is bonded to four equivalent O(1) atoms to form GeO4 tetrahedra that share corners with eight equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles are 62°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na(1), one Ti(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to four equivalent Na(1) and one Ti(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2TiGeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.719
_cell_length_b   6.719
_cell_length_c   5.238
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   236.440
_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  0.750  0.250  0.000  1.0
  Na  Na1  1  0.750  0.750  0.000  1.0
  Na  Na2  1  0.250  0.750  0.000  1.0
  Na  Na3  1  0.250  0.250  0.000  1.0
  Ti  Ti4  1  0.500  0.000  0.572  1.0
  Ti  Ti5  1  0.000  0.500  0.428  1.0
  Ge  Ge6  1  0.500  0.500  0.500  1.0
  Ge  Ge7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.216  0.000  0.694  1.0
  O  O9  1  0.784  0.000  0.694  1.0
  O  O10  1  0.500  0.716  0.694  1.0
  O  O11  1  0.500  0.284  0.694  1.0
  O  O12  1  0.000  0.216  0.306  1.0
  O  O13  1  0.716  0.500  0.306  1.0
  O  O14  1  0.284  0.500  0.306  1.0
  O  O15  1  0.000  0.784  0.306  1.0
  O  O16  1  0.000  0.500  0.756  1.0
  O  O17  1  0.500  0.000  0.244  1.0
[/CIF]
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