The crystal structure described by Ba3Ga2Ge4O14 is Esseneite-like structured and crystallizes in the trigonal P321 space group. Ba(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Ga(1) is bonded to one O(2) and three equivalent O(1) atoms to form GaO4 tetrahedra that share corners with three equivalent Ge(1)O4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Ge site, Ge(2) is bonded to six equivalent O(3) atoms to form corner-sharing GeO6 octahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Ba(1), one Ga(1), and one Ge(1) atom. In the second O site, O(2) is bonded to three equivalent Ba(1) and one Ga(1) atom to form distorted corner-sharing OBa3Ga tetrahedra. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ba(1), one Ge(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba3Ga2(Ge2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.710
_cell_length_b   8.710
_cell_length_c   5.094
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   334.684
_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
  Ba  Ba0  1  0.573  0.000  0.000  1.0
  Ba  Ba1  1  0.427  0.427  0.000  1.0
  Ba  Ba2  1  0.000  0.573  0.000  1.0
  Ga  Ga3  1  0.667  0.333  0.500  1.0
  Ga  Ga4  1  0.333  0.667  0.500  1.0
  Ge  Ge5  1  0.000  0.245  0.500  1.0
  Ge  Ge6  1  0.245  0.000  0.500  1.0
  Ge  Ge7  1  0.755  0.755  0.500  1.0
  Ge  Ge8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.284  0.837  0.651  1.0
  O  O10  1  0.837  0.284  0.349  1.0
  O  O11  1  0.333  0.667  0.151  1.0
  O  O12  1  0.097  0.892  0.231  1.0
  O  O13  1  0.795  0.903  0.231  1.0
  O  O14  1  0.205  0.108  0.769  1.0
  O  O15  1  0.552  0.716  0.651  1.0
  O  O16  1  0.163  0.448  0.651  1.0
  O  O17  1  0.667  0.333  0.849  1.0
  O  O18  1  0.716  0.552  0.349  1.0
  O  O19  1  0.892  0.097  0.769  1.0
  O  O20  1  0.448  0.163  0.349  1.0
  O  O21  1  0.903  0.795  0.769  1.0
  O  O22  1  0.108  0.205  0.231  1.0
[/CIF]
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The crystal structure described by Ba3Ga2Ge4O14 is Esseneite-like structured and crystallizes in the trigonal P321 space group. Ba(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Ga(1) is bonded to one O(2) and three equivalent O(1) atoms to form GaO4 tetrahedra that share corners with three equivalent Ge(1)O4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Ge site, Ge(2) is bonded to six equivalent O(3) atoms to form corner-sharing GeO6 octahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Ba(1), one Ga(1), and one Ge(1) atom. In the second O site, O(2) is bonded to three equivalent Ba(1) and one Ga(1) atom to form distorted corner-sharing OBa3Ga tetrahedra. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ba(1), one Ge(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba3Ga2(Ge2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.710
_cell_length_b   8.710
_cell_length_c   5.094
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   334.684
_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
  Ba  Ba0  1  0.573  0.000  0.000  1.0
  Ba  Ba1  1  0.427  0.427  0.000  1.0
  Ba  Ba2  1  0.000  0.573  0.000  1.0
  Ga  Ga3  1  0.667  0.333  0.500  1.0
  Ga  Ga4  1  0.333  0.667  0.500  1.0
  Ge  Ge5  1  0.000  0.245  0.500  1.0
  Ge  Ge6  1  0.245  0.000  0.500  1.0
  Ge  Ge7  1  0.755  0.755  0.500  1.0
  Ge  Ge8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.284  0.837  0.651  1.0
  O  O10  1  0.837  0.284  0.349  1.0
  O  O11  1  0.333  0.667  0.151  1.0
  O  O12  1  0.097  0.892  0.231  1.0
  O  O13  1  0.795  0.903  0.231  1.0
  O  O14  1  0.205  0.108  0.769  1.0
  O  O15  1  0.552  0.716  0.651  1.0
  O  O16  1  0.163  0.448  0.651  1.0
  O  O17  1  0.667  0.333  0.849  1.0
  O  O18  1  0.716  0.552  0.349  1.0
  O  O19  1  0.892  0.097  0.769  1.0
  O  O20  1  0.448  0.163  0.349  1.0
  O  O21  1  0.903  0.795  0.769  1.0
  O  O22  1  0.108  0.205  0.231  1.0
[/CIF]
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