The crystal structure described by NaGe2P3O12 crystallizes in the trigonal R-3c space group. Na(1) is bonded in a hexagonal planar geometry to six equivalent O(1) atoms. Ge(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form GeO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with four equivalent Ge(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-35°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Ge(1), and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ge(1) and one P(1) atom. is represented by the CIF file [CIF]
data_NaGe2(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.687
_cell_length_b   8.687
_cell_length_c   8.687
_cell_angle_alpha   57.455
_cell_angle_beta   57.455
_cell_angle_gamma   57.455
_symmetry_Int_Tables_number   1
_cell_volume   436.365
_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  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.500  0.500  1.0
  Ge  Ge2  1  0.355  0.355  0.355  1.0
  Ge  Ge3  1  0.145  0.145  0.145  1.0
  Ge  Ge4  1  0.855  0.855  0.855  1.0
  Ge  Ge5  1  0.645  0.645  0.645  1.0
  P  P6  1  0.465  0.750  0.035  1.0
  P  P7  1  0.035  0.465  0.750  1.0
  P  P8  1  0.535  0.250  0.965  1.0
  P  P9  1  0.965  0.535  0.250  1.0
  P  P10  1  0.750  0.035  0.465  1.0
  P  P11  1  0.250  0.965  0.535  1.0
  O  O12  1  0.431  0.778  0.559  1.0
  O  O13  1  0.559  0.431  0.778  1.0
  O  O14  1  0.778  0.559  0.431  1.0
  O  O15  1  0.069  0.941  0.722  1.0
  O  O16  1  0.722  0.069  0.941  1.0
  O  O17  1  0.941  0.722  0.069  1.0
  O  O18  1  0.569  0.222  0.441  1.0
  O  O19  1  0.441  0.569  0.222  1.0
  O  O20  1  0.222  0.441  0.569  1.0
  O  O21  1  0.931  0.059  0.278  1.0
  O  O22  1  0.278  0.931  0.059  1.0
  O  O23  1  0.059  0.278  0.931  1.0
  O  O24  1  0.986  0.359  0.229  1.0
  O  O25  1  0.359  0.229  0.986  1.0
  O  O26  1  0.229  0.986  0.359  1.0
  O  O27  1  0.141  0.514  0.271  1.0
  O  O28  1  0.514  0.271  0.141  1.0
  O  O29  1  0.271  0.141  0.514  1.0
  O  O30  1  0.014  0.641  0.771  1.0
  O  O31  1  0.641  0.771  0.014  1.0
  O  O32  1  0.771  0.014  0.641  1.0
  O  O33  1  0.859  0.486  0.729  1.0
  O  O34  1  0.486  0.729  0.859  1.0
  O  O35  1  0.729  0.859  0.486  1.0
[/CIF]
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The crystal structure described by NaGe2P3O12 crystallizes in the trigonal R-3c space group. Na(1) is bonded in a hexagonal planar geometry to six equivalent O(1) atoms. Ge(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form GeO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with four equivalent Ge(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-35°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Ge(1), and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ge(1) and one P(1) atom. is represented by the CIF file [CIF]
data_NaGe2(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.687
_cell_length_b   8.687
_cell_length_c   8.687
_cell_angle_alpha   57.455
_cell_angle_beta   57.455
_cell_angle_gamma   57.455
_symmetry_Int_Tables_number   1
_cell_volume   436.365
_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  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.500  0.500  1.0
  Ge  Ge2  1  0.355  0.355  0.355  1.0
  Ge  Ge3  1  0.145  0.145  0.145  1.0
  Ge  Ge4  1  0.855  0.855  0.855  1.0
  Ge  Ge5  1  0.645  0.645  0.645  1.0
  P  P6  1  0.465  0.750  0.035  1.0
  P  P7  1  0.035  0.465  0.750  1.0
  P  P8  1  0.535  0.250  0.965  1.0
  P  P9  1  0.965  0.535  0.250  1.0
  P  P10  1  0.750  0.035  0.465  1.0
  P  P11  1  0.250  0.965  0.535  1.0
  O  O12  1  0.431  0.778  0.559  1.0
  O  O13  1  0.559  0.431  0.778  1.0
  O  O14  1  0.778  0.559  0.431  1.0
  O  O15  1  0.069  0.941  0.722  1.0
  O  O16  1  0.722  0.069  0.941  1.0
  O  O17  1  0.941  0.722  0.069  1.0
  O  O18  1  0.569  0.222  0.441  1.0
  O  O19  1  0.441  0.569  0.222  1.0
  O  O20  1  0.222  0.441  0.569  1.0
  O  O21  1  0.931  0.059  0.278  1.0
  O  O22  1  0.278  0.931  0.059  1.0
  O  O23  1  0.059  0.278  0.931  1.0
  O  O24  1  0.986  0.359  0.229  1.0
  O  O25  1  0.359  0.229  0.986  1.0
  O  O26  1  0.229  0.986  0.359  1.0
  O  O27  1  0.141  0.514  0.271  1.0
  O  O28  1  0.514  0.271  0.141  1.0
  O  O29  1  0.271  0.141  0.514  1.0
  O  O30  1  0.014  0.641  0.771  1.0
  O  O31  1  0.641  0.771  0.014  1.0
  O  O32  1  0.771  0.014  0.641  1.0
  O  O33  1  0.859  0.486  0.729  1.0
  O  O34  1  0.486  0.729  0.859  1.0
  O  O35  1  0.729  0.859  0.486  1.0
[/CIF]
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