The structure described by Na3Ge2Si2PO12 crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to one O(10), one O(11), one O(12), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(3), one O(7), one O(9), and two equivalent O(5) atoms. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(4), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form GeO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form GeO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(2), one O(5), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra and corners with two equivalent Ge(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-38°. In the second Si site, Si(2) is bonded to one O(12), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra and corners with two equivalent Ge(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-37°. P(1) is bonded to one O(1), one O(10), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra and corners with two equivalent Ge(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-35°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(2), one Ge(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(3), one Ge(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Na(2), one Ge(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(3), one Ge(2), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Ge(2), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Na(3), one Ge(2), and one P(1) atom. In the seventh O site, O(7) is bonded to one Na(1), one Na(2), one Na(3), one Ge(1), and one Si(2) atom to form distorted corner-sharing ONa3SiGe trigonal bipyramids. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Ge(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Ge(1), and one P(1) atom. In the tenth O site, O(10) is bonded to one Na(1), one Na(2), one Na(3), one Ge(2), and one P(1) atom to form distorted corner-sharing ONa3GeP trigonal bipyramids. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Ge(2), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Ge(2), and one Si(2) atom. is represented by the CIF file [CIF]
data_Na3Si2Ge2PO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.670
_cell_length_b   8.679
_cell_length_c   8.755
_cell_angle_alpha   60.497
_cell_angle_beta   90.000
_cell_angle_gamma   119.967
_symmetry_Int_Tables_number   1
_cell_volume   469.505
_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
  Ge  Ge0  1  0.344  0.701  0.940  1.0
  Ge  Ge1  1  0.857  0.701  0.440  1.0
  Ge  Ge2  1  0.645  0.299  0.059  1.0
  Ge  Ge3  1  0.153  0.299  0.559  1.0
  Na  Na4  1  0.499  0.003  0.499  1.0
  Na  Na5  1  0.004  0.003  0.999  1.0
  Na  Na6  1  0.886  0.135  0.249  1.0
  Na  Na7  1  0.252  0.871  0.246  1.0
  Na  Na8  1  0.749  0.135  0.749  1.0
  Na  Na9  1  0.119  0.871  0.746  1.0
  O  O10  1  0.519  0.791  0.071  1.0
  O  O11  1  0.148  0.667  0.069  1.0
  O  O12  1  0.267  0.420  0.074  1.0
  O  O13  1  0.019  0.667  0.569  1.0
  O  O14  1  0.772  0.791  0.571  1.0
  O  O15  1  0.653  0.420  0.574  1.0
  O  O16  1  0.484  0.207  0.939  1.0
  O  O17  1  0.851  0.335  0.932  1.0
  O  O18  1  0.733  0.591  0.918  1.0
  O  O19  1  0.985  0.335  0.432  1.0
  O  O20  1  0.223  0.207  0.439  1.0
  O  O21  1  0.358  0.591  0.418  1.0
  O  O22  1  0.440  0.005  0.770  1.0
  O  O23  1  0.229  0.668  0.767  1.0
  O  O24  1  0.576  0.797  0.770  1.0
  O  O25  1  0.939  0.668  0.267  1.0
  O  O26  1  0.065  0.005  0.270  1.0
  O  O27  1  0.721  0.797  0.270  1.0
  O  O28  1  0.562  0.980  0.236  1.0
  O  O29  1  0.773  0.332  0.227  1.0
  O  O30  1  0.431  0.198  0.233  1.0
  O  O31  1  0.059  0.332  0.727  1.0
  O  O32  1  0.918  0.980  0.736  1.0
  O  O33  1  0.267  0.198  0.733  1.0
  P  P34  1  0.539  0.784  0.249  1.0
  P  P35  1  0.745  0.784  0.749  1.0
  Si  Si36  1  0.958  0.499  0.251  1.0
  Si  Si37  1  0.254  0.217  0.251  1.0
  Si  Si38  1  0.041  0.499  0.751  1.0
  Si  Si39  1  0.462  0.217  0.751  1.0
[/CIF]
.
The structure described by Na3Ge2Si2PO12 crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to one O(10), one O(11), one O(12), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(3), one O(7), one O(9), and two equivalent O(5) atoms. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(4), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form GeO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form GeO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(2), one O(5), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra and corners with two equivalent Ge(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-38°. In the second Si site, Si(2) is bonded to one O(12), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra and corners with two equivalent Ge(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-37°. P(1) is bonded to one O(1), one O(10), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra and corners with two equivalent Ge(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-35°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(2), one Ge(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(3), one Ge(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Na(2), one Ge(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(3), one Ge(2), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Ge(2), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Na(3), one Ge(2), and one P(1) atom. In the seventh O site, O(7) is bonded to one Na(1), one Na(2), one Na(3), one Ge(1), and one Si(2) atom to form distorted corner-sharing ONa3SiGe trigonal bipyramids. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Ge(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Ge(1), and one P(1) atom. In the tenth O site, O(10) is bonded to one Na(1), one Na(2), one Na(3), one Ge(2), and one P(1) atom to form distorted corner-sharing ONa3GeP trigonal bipyramids. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Ge(2), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Ge(2), and one Si(2) atom. is represented by the CIF file [CIF]
data_Na3Si2Ge2PO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.670
_cell_length_b   8.679
_cell_length_c   8.755
_cell_angle_alpha   60.497
_cell_angle_beta   90.000
_cell_angle_gamma   119.967
_symmetry_Int_Tables_number   1
_cell_volume   469.505
_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
  Ge  Ge0  1  0.344  0.701  0.940  1.0
  Ge  Ge1  1  0.857  0.701  0.440  1.0
  Ge  Ge2  1  0.645  0.299  0.059  1.0
  Ge  Ge3  1  0.153  0.299  0.559  1.0
  Na  Na4  1  0.499  0.003  0.499  1.0
  Na  Na5  1  0.004  0.003  0.999  1.0
  Na  Na6  1  0.886  0.135  0.249  1.0
  Na  Na7  1  0.252  0.871  0.246  1.0
  Na  Na8  1  0.749  0.135  0.749  1.0
  Na  Na9  1  0.119  0.871  0.746  1.0
  O  O10  1  0.519  0.791  0.071  1.0
  O  O11  1  0.148  0.667  0.069  1.0
  O  O12  1  0.267  0.420  0.074  1.0
  O  O13  1  0.019  0.667  0.569  1.0
  O  O14  1  0.772  0.791  0.571  1.0
  O  O15  1  0.653  0.420  0.574  1.0
  O  O16  1  0.484  0.207  0.939  1.0
  O  O17  1  0.851  0.335  0.932  1.0
  O  O18  1  0.733  0.591  0.918  1.0
  O  O19  1  0.985  0.335  0.432  1.0
  O  O20  1  0.223  0.207  0.439  1.0
  O  O21  1  0.358  0.591  0.418  1.0
  O  O22  1  0.440  0.005  0.770  1.0
  O  O23  1  0.229  0.668  0.767  1.0
  O  O24  1  0.576  0.797  0.770  1.0
  O  O25  1  0.939  0.668  0.267  1.0
  O  O26  1  0.065  0.005  0.270  1.0
  O  O27  1  0.721  0.797  0.270  1.0
  O  O28  1  0.562  0.980  0.236  1.0
  O  O29  1  0.773  0.332  0.227  1.0
  O  O30  1  0.431  0.198  0.233  1.0
  O  O31  1  0.059  0.332  0.727  1.0
  O  O32  1  0.918  0.980  0.736  1.0
  O  O33  1  0.267  0.198  0.733  1.0
  P  P34  1  0.539  0.784  0.249  1.0
  P  P35  1  0.745  0.784  0.749  1.0
  Si  Si36  1  0.958  0.499  0.251  1.0
  Si  Si37  1  0.254  0.217  0.251  1.0
  Si  Si38  1  0.041  0.499  0.751  1.0
  Si  Si39  1  0.462  0.217  0.751  1.0
[/CIF]
.