The crystal structure described by Ca3Ga2Ge4O14 crystallizes in the monoclinic C2 space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(5), one O(7), two equivalent O(4), and two equivalent O(6) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms. Ga(1) is bonded in a 5-coordinate geometry to one O(2), one O(6), one O(7), and two equivalent O(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with two equivalent Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 62°. In the second Ge site, Ge(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing GeO6 octahedra. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form corner-sharing GeO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ca(1), one Ge(1), and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Ga(1), and one Ge(2) atom. In the third O site, O(3) is bonded to one Ca(2), two equivalent Ga(1), and one Ge(2) atom to form distorted OCaGa2Ge trigonal pyramids that share corners with two equivalent O(4)Ca3Ge tetrahedra and edges with two equivalent O(3)CaGa2Ge trigonal pyramids. In the fourth O site, O(4) is bonded to one Ca(2), two equivalent Ca(1), and one Ge(3) atom to form distorted OCa3Ge tetrahedra that share corners with three equivalent O(4)Ca3Ge tetrahedra and corners with two equivalent O(3)CaGa2Ge trigonal pyramids. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ca(1), one Ca(2), one Ge(1), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Ca(1), one Ga(1), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(2), one Ga(1), and one Ge(3) atom. is represented by the CIF file [CIF]
data_Ca3Ga2(Ge2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.053
_cell_length_b   8.053
_cell_length_c   4.982
_cell_angle_alpha   88.717
_cell_angle_beta   88.717
_cell_angle_gamma   61.023
_symmetry_Int_Tables_number   1
_cell_volume   282.562
_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
  Ca  Ca0  1  0.577  0.995  0.999  1.0
  Ca  Ca1  1  0.005  0.423  0.001  1.0
  Ca  Ca2  1  0.410  0.590  0.000  1.0
  Ga  Ga3  1  0.237  0.990  0.518  1.0
  Ga  Ga4  1  0.010  0.763  0.482  1.0
  Ge  Ge5  1  0.755  0.245  0.500  1.0
  Ge  Ge6  1  1.000  0.000  0.000  1.0
  Ge  Ge7  1  0.671  0.667  0.534  1.0
  Ge  Ge8  1  0.333  0.329  0.466  1.0
  O  O9  1  0.780  0.084  0.756  1.0
  O  O10  1  0.076  0.143  0.783  1.0
  O  O11  1  0.136  0.796  0.763  1.0
  O  O12  1  0.916  0.220  0.244  1.0
  O  O13  1  0.204  0.864  0.237  1.0
  O  O14  1  0.857  0.924  0.217  1.0
  O  O15  1  0.664  0.666  0.190  1.0
  O  O16  1  0.334  0.336  0.810  1.0
  O  O17  1  0.543  0.314  0.313  1.0
  O  O18  1  0.321  0.140  0.318  1.0
  O  O19  1  0.159  0.533  0.300  1.0
  O  O20  1  0.686  0.457  0.687  1.0
  O  O21  1  0.467  0.841  0.700  1.0
  O  O22  1  0.860  0.679  0.682  1.0
[/CIF]
.
The crystal structure described by Ca3Ga2Ge4O14 crystallizes in the monoclinic C2 space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(5), one O(7), two equivalent O(4), and two equivalent O(6) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms. Ga(1) is bonded in a 5-coordinate geometry to one O(2), one O(6), one O(7), and two equivalent O(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with two equivalent Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 62°. In the second Ge site, Ge(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing GeO6 octahedra. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form corner-sharing GeO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ca(1), one Ge(1), and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Ga(1), and one Ge(2) atom. In the third O site, O(3) is bonded to one Ca(2), two equivalent Ga(1), and one Ge(2) atom to form distorted OCaGa2Ge trigonal pyramids that share corners with two equivalent O(4)Ca3Ge tetrahedra and edges with two equivalent O(3)CaGa2Ge trigonal pyramids. In the fourth O site, O(4) is bonded to one Ca(2), two equivalent Ca(1), and one Ge(3) atom to form distorted OCa3Ge tetrahedra that share corners with three equivalent O(4)Ca3Ge tetrahedra and corners with two equivalent O(3)CaGa2Ge trigonal pyramids. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ca(1), one Ca(2), one Ge(1), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Ca(1), one Ga(1), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(2), one Ga(1), and one Ge(3) atom. is represented by the CIF file [CIF]
data_Ca3Ga2(Ge2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.053
_cell_length_b   8.053
_cell_length_c   4.982
_cell_angle_alpha   88.717
_cell_angle_beta   88.717
_cell_angle_gamma   61.023
_symmetry_Int_Tables_number   1
_cell_volume   282.562
_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
  Ca  Ca0  1  0.577  0.995  0.999  1.0
  Ca  Ca1  1  0.005  0.423  0.001  1.0
  Ca  Ca2  1  0.410  0.590  0.000  1.0
  Ga  Ga3  1  0.237  0.990  0.518  1.0
  Ga  Ga4  1  0.010  0.763  0.482  1.0
  Ge  Ge5  1  0.755  0.245  0.500  1.0
  Ge  Ge6  1  1.000  0.000  0.000  1.0
  Ge  Ge7  1  0.671  0.667  0.534  1.0
  Ge  Ge8  1  0.333  0.329  0.466  1.0
  O  O9  1  0.780  0.084  0.756  1.0
  O  O10  1  0.076  0.143  0.783  1.0
  O  O11  1  0.136  0.796  0.763  1.0
  O  O12  1  0.916  0.220  0.244  1.0
  O  O13  1  0.204  0.864  0.237  1.0
  O  O14  1  0.857  0.924  0.217  1.0
  O  O15  1  0.664  0.666  0.190  1.0
  O  O16  1  0.334  0.336  0.810  1.0
  O  O17  1  0.543  0.314  0.313  1.0
  O  O18  1  0.321  0.140  0.318  1.0
  O  O19  1  0.159  0.533  0.300  1.0
  O  O20  1  0.686  0.457  0.687  1.0
  O  O21  1  0.467  0.841  0.700  1.0
  O  O22  1  0.860  0.679  0.682  1.0
[/CIF]
.