The material described by Na4MgTi2(GeO5)2 crystallizes in the tetragonal P-4m2 space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Mg(1) is bonded to four equivalent O(2) atoms to form MgO4 tetrahedra that share corners with four equivalent Ti(1)O5 trigonal bipyramids and edges with two equivalent Ge(1)O4 tetrahedra. Ti(1) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted TiO5 trigonal bipyramids that share corners with two equivalent Mg(1)O4 tetrahedra, corners with two equivalent Ge(1)O4 tetrahedra, and corners with two equivalent Ge(2)O4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent O(2) atoms to form distorted GeO4 tetrahedra that share corners with four equivalent Ti(1)O5 trigonal bipyramids and edges with two equivalent Mg(1)O4 tetrahedra. In the second Ge site, Ge(2) is bonded to four equivalent O(1) atoms to form GeO4 tetrahedra that share corners with four equivalent Ti(1)O5 trigonal bipyramids. There are three 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(2) atom. In the second O site, O(2) is bonded to two equivalent Na(1), one Mg(1), one Ti(1), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing ONa2MgTiGe trigonal bipyramids. In the third O site, O(3) is bonded in a single-bond geometry to one Ti(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4MgTi2(GeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.485
_cell_length_b   6.879
_cell_length_c   6.879
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   259.548
_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  0.000  0.967  0.033  1.0
  Na  Na1  1  0.000  0.533  0.033  1.0
  Na  Na2  1  0.000  0.533  0.467  1.0
  Na  Na3  1  0.000  0.967  0.467  1.0
  Mg  Mg4  1  0.000  0.250  0.750  1.0
  Ti  Ti5  1  0.626  0.750  0.750  1.0
  Ti  Ti6  1  0.374  0.250  0.250  1.0
  Ge  Ge7  1  0.500  0.250  0.750  1.0
  Ge  Ge8  1  0.500  0.750  0.250  1.0
  O  O9  1  0.695  0.750  0.456  1.0
  O  O10  1  0.695  0.750  0.044  1.0
  O  O11  1  0.777  0.482  0.750  1.0
  O  O12  1  0.777  0.018  0.750  1.0
  O  O13  1  0.305  0.956  0.250  1.0
  O  O14  1  0.223  0.250  0.982  1.0
  O  O15  1  0.223  0.250  0.518  1.0
  O  O16  1  0.305  0.544  0.250  1.0
  O  O17  1  0.687  0.250  0.250  1.0
  O  O18  1  0.313  0.750  0.750  1.0
[/CIF]
.
The material described by Na4MgTi2(GeO5)2 crystallizes in the tetragonal P-4m2 space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Mg(1) is bonded to four equivalent O(2) atoms to form MgO4 tetrahedra that share corners with four equivalent Ti(1)O5 trigonal bipyramids and edges with two equivalent Ge(1)O4 tetrahedra. Ti(1) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted TiO5 trigonal bipyramids that share corners with two equivalent Mg(1)O4 tetrahedra, corners with two equivalent Ge(1)O4 tetrahedra, and corners with two equivalent Ge(2)O4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent O(2) atoms to form distorted GeO4 tetrahedra that share corners with four equivalent Ti(1)O5 trigonal bipyramids and edges with two equivalent Mg(1)O4 tetrahedra. In the second Ge site, Ge(2) is bonded to four equivalent O(1) atoms to form GeO4 tetrahedra that share corners with four equivalent Ti(1)O5 trigonal bipyramids. There are three 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(2) atom. In the second O site, O(2) is bonded to two equivalent Na(1), one Mg(1), one Ti(1), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing ONa2MgTiGe trigonal bipyramids. In the third O site, O(3) is bonded in a single-bond geometry to one Ti(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4MgTi2(GeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.485
_cell_length_b   6.879
_cell_length_c   6.879
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   259.548
_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  0.000  0.967  0.033  1.0
  Na  Na1  1  0.000  0.533  0.033  1.0
  Na  Na2  1  0.000  0.533  0.467  1.0
  Na  Na3  1  0.000  0.967  0.467  1.0
  Mg  Mg4  1  0.000  0.250  0.750  1.0
  Ti  Ti5  1  0.626  0.750  0.750  1.0
  Ti  Ti6  1  0.374  0.250  0.250  1.0
  Ge  Ge7  1  0.500  0.250  0.750  1.0
  Ge  Ge8  1  0.500  0.750  0.250  1.0
  O  O9  1  0.695  0.750  0.456  1.0
  O  O10  1  0.695  0.750  0.044  1.0
  O  O11  1  0.777  0.482  0.750  1.0
  O  O12  1  0.777  0.018  0.750  1.0
  O  O13  1  0.305  0.956  0.250  1.0
  O  O14  1  0.223  0.250  0.982  1.0
  O  O15  1  0.223  0.250  0.518  1.0
  O  O16  1  0.305  0.544  0.250  1.0
  O  O17  1  0.687  0.250  0.250  1.0
  O  O18  1  0.313  0.750  0.750  1.0
[/CIF]
.