The material described by Na3Ga3Ge3O16 crystallizes in the trigonal R3c 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(6) atoms. Ga(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GaO4 tetrahedra that share corners with four equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with four equivalent Ga(1)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(5) is bonded in a distorted hexagonal planar geometry to three equivalent Na(1) and three equivalent O(6) atoms. In the second O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one O(5) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one Ga(1) and one Ge(1) atom. In the fourth O site, O(2) is bonded in a trigonal planar geometry to one Na(1), one Ga(1), and one Ge(1) atom. In the fifth O site, O(3) is bonded in a trigonal planar geometry to one Na(1), one Ga(1), and one Ge(1) atom. In the sixth O site, O(4) is bonded in a trigonal planar geometry to one Na(1), one Ga(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Na3Ga3Ge3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.232
_cell_length_b   9.232
_cell_length_c   9.232
_cell_angle_alpha   90.918
_cell_angle_beta   90.918
_cell_angle_gamma   90.918
_symmetry_Int_Tables_number   1
_cell_volume   786.662
_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  0.328  0.671  0.330  1.0
  Na  Na1  1  0.671  0.330  0.328  1.0
  Na  Na2  1  0.330  0.328  0.671  1.0
  Na  Na3  1  0.171  0.828  0.830  1.0
  Na  Na4  1  0.830  0.171  0.828  1.0
  Na  Na5  1  0.828  0.830  0.171  1.0
  Ga  Ga6  1  0.995  0.752  0.504  1.0
  Ga  Ga7  1  0.504  0.995  0.752  1.0
  Ga  Ga8  1  0.752  0.504  0.995  1.0
  Ga  Ga9  1  0.495  0.004  0.252  1.0
  Ga  Ga10  1  0.252  0.495  0.004  1.0
  Ga  Ga11  1  0.004  0.252  0.495  1.0
  Ge  Ge12  1  0.503  0.751  0.999  1.0
  Ge  Ge13  1  0.999  0.503  0.751  1.0
  Ge  Ge14  1  0.751  0.999  0.503  1.0
  Ge  Ge15  1  0.003  0.499  0.251  1.0
  Ge  Ge16  1  0.251  0.003  0.499  1.0
  Ge  Ge17  1  0.499  0.251  0.003  1.0
  O  O18  1  0.921  0.645  0.653  1.0
  O  O19  1  0.653  0.921  0.645  1.0
  O  O20  1  0.645  0.653  0.921  1.0
  O  O21  1  0.083  0.637  0.364  1.0
  O  O22  1  0.354  0.916  0.363  1.0
  O  O23  1  0.370  0.643  0.084  1.0
  O  O24  1  0.916  0.363  0.354  1.0
  O  O25  1  0.643  0.084  0.370  1.0
  O  O26  1  0.637  0.364  0.083  1.0
  O  O27  1  0.084  0.370  0.643  1.0
  O  O28  1  0.364  0.083  0.637  1.0
  O  O29  1  0.363  0.354  0.916  1.0
  O  O30  1  0.416  0.854  0.863  1.0
  O  O31  1  0.143  0.870  0.584  1.0
  O  O32  1  0.137  0.583  0.864  1.0
  O  O33  1  0.584  0.143  0.870  1.0
  O  O34  1  0.864  0.137  0.583  1.0
  O  O35  1  0.863  0.416  0.854  1.0
  O  O36  1  0.421  0.153  0.145  1.0
  O  O37  1  0.153  0.145  0.421  1.0
  O  O38  1  0.145  0.421  0.153  1.0
  O  O39  1  0.583  0.864  0.137  1.0
  O  O40  1  0.854  0.863  0.416  1.0
  O  O41  1  0.870  0.584  0.143  1.0
  O  O42  1  0.937  0.937  0.937  1.0
  O  O43  1  0.070  0.915  0.071  1.0
  O  O44  1  0.915  0.071  0.070  1.0
  O  O45  1  0.071  0.070  0.915  1.0
  O  O46  1  0.415  0.570  0.571  1.0
  O  O47  1  0.571  0.415  0.570  1.0
  O  O48  1  0.437  0.437  0.437  1.0
  O  O49  1  0.570  0.571  0.415  1.0
[/CIF]
.
The material described by Na3Ga3Ge3O16 crystallizes in the trigonal R3c 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(6) atoms. Ga(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GaO4 tetrahedra that share corners with four equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with four equivalent Ga(1)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(5) is bonded in a distorted hexagonal planar geometry to three equivalent Na(1) and three equivalent O(6) atoms. In the second O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one O(5) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one Ga(1) and one Ge(1) atom. In the fourth O site, O(2) is bonded in a trigonal planar geometry to one Na(1), one Ga(1), and one Ge(1) atom. In the fifth O site, O(3) is bonded in a trigonal planar geometry to one Na(1), one Ga(1), and one Ge(1) atom. In the sixth O site, O(4) is bonded in a trigonal planar geometry to one Na(1), one Ga(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Na3Ga3Ge3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.232
_cell_length_b   9.232
_cell_length_c   9.232
_cell_angle_alpha   90.918
_cell_angle_beta   90.918
_cell_angle_gamma   90.918
_symmetry_Int_Tables_number   1
_cell_volume   786.662
_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  0.328  0.671  0.330  1.0
  Na  Na1  1  0.671  0.330  0.328  1.0
  Na  Na2  1  0.330  0.328  0.671  1.0
  Na  Na3  1  0.171  0.828  0.830  1.0
  Na  Na4  1  0.830  0.171  0.828  1.0
  Na  Na5  1  0.828  0.830  0.171  1.0
  Ga  Ga6  1  0.995  0.752  0.504  1.0
  Ga  Ga7  1  0.504  0.995  0.752  1.0
  Ga  Ga8  1  0.752  0.504  0.995  1.0
  Ga  Ga9  1  0.495  0.004  0.252  1.0
  Ga  Ga10  1  0.252  0.495  0.004  1.0
  Ga  Ga11  1  0.004  0.252  0.495  1.0
  Ge  Ge12  1  0.503  0.751  0.999  1.0
  Ge  Ge13  1  0.999  0.503  0.751  1.0
  Ge  Ge14  1  0.751  0.999  0.503  1.0
  Ge  Ge15  1  0.003  0.499  0.251  1.0
  Ge  Ge16  1  0.251  0.003  0.499  1.0
  Ge  Ge17  1  0.499  0.251  0.003  1.0
  O  O18  1  0.921  0.645  0.653  1.0
  O  O19  1  0.653  0.921  0.645  1.0
  O  O20  1  0.645  0.653  0.921  1.0
  O  O21  1  0.083  0.637  0.364  1.0
  O  O22  1  0.354  0.916  0.363  1.0
  O  O23  1  0.370  0.643  0.084  1.0
  O  O24  1  0.916  0.363  0.354  1.0
  O  O25  1  0.643  0.084  0.370  1.0
  O  O26  1  0.637  0.364  0.083  1.0
  O  O27  1  0.084  0.370  0.643  1.0
  O  O28  1  0.364  0.083  0.637  1.0
  O  O29  1  0.363  0.354  0.916  1.0
  O  O30  1  0.416  0.854  0.863  1.0
  O  O31  1  0.143  0.870  0.584  1.0
  O  O32  1  0.137  0.583  0.864  1.0
  O  O33  1  0.584  0.143  0.870  1.0
  O  O34  1  0.864  0.137  0.583  1.0
  O  O35  1  0.863  0.416  0.854  1.0
  O  O36  1  0.421  0.153  0.145  1.0
  O  O37  1  0.153  0.145  0.421  1.0
  O  O38  1  0.145  0.421  0.153  1.0
  O  O39  1  0.583  0.864  0.137  1.0
  O  O40  1  0.854  0.863  0.416  1.0
  O  O41  1  0.870  0.584  0.143  1.0
  O  O42  1  0.937  0.937  0.937  1.0
  O  O43  1  0.070  0.915  0.071  1.0
  O  O44  1  0.915  0.071  0.070  1.0
  O  O45  1  0.071  0.070  0.915  1.0
  O  O46  1  0.415  0.570  0.571  1.0
  O  O47  1  0.571  0.415  0.570  1.0
  O  O48  1  0.437  0.437  0.437  1.0
  O  O49  1  0.570  0.571  0.415  1.0
[/CIF]
.