The material structure described by Gd4Ge3O13 crystallizes in the triclinic P-1 space group. There are four inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(3), one O(4), one O(6), and one O(9) atom. In the second Gd site, Gd(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(13), one O(5), one O(7), and two equivalent O(2) atoms. In the third Gd site, Gd(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(12), one O(2), one O(5), one O(7), and one O(8) atom. In the fourth Gd site, Gd(4) is bonded in a 7-coordinate geometry to one O(13), one O(3), one O(6), one O(8), one O(9), and two equivalent O(4) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(10), one O(11), one O(6), and one O(8) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded in a tetrahedral geometry to one O(1), one O(12), one O(3), and one O(7) atom. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(6), and one O(9) atom to form corner-sharing GeO4 tetrahedra. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(2), and one Ge(2) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Gd(3) and two equivalent Gd(2) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to one Gd(1), one Gd(4), and one Ge(2) atom. In the fourth O site, O(4) is bonded to one Gd(1), two equivalent Gd(4), and one Ge(3) atom to form distorted edge-sharing OGd3Ge tetrahedra. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Gd(2), one Gd(3), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(4), one Ge(1), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Gd(2), one Gd(3), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Gd(3), one Gd(4), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(4), and one Ge(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Gd(2), one Gd(3), and one Ge(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(3), and one Ge(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(3), and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a distorted T-shaped geometry to one Gd(1), one Gd(2), and one Gd(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Gd4Ge3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.746
_cell_length_b   9.456
_cell_length_c   10.163
_cell_angle_alpha   62.464
_cell_angle_beta   87.891
_cell_angle_gamma   69.772
_symmetry_Int_Tables_number   1
_cell_volume   533.440
_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
  Gd  Gd0  1  0.262  0.440  0.775  1.0
  Gd  Gd1  1  0.738  0.560  0.225  1.0
  Gd  Gd2  1  0.304  0.851  0.490  1.0
  Gd  Gd3  1  0.696  0.149  0.510  1.0
  Gd  Gd4  1  0.205  0.107  0.701  1.0
  Gd  Gd5  1  0.795  0.893  0.299  1.0
  Gd  Gd6  1  0.217  0.656  0.006  1.0
  Gd  Gd7  1  0.783  0.344  0.994  1.0
  Ge  Ge8  1  0.275  0.955  0.109  1.0
  Ge  Ge9  1  0.725  0.045  0.891  1.0
  Ge  Ge10  1  0.248  0.520  0.397  1.0
  Ge  Ge11  1  0.752  0.480  0.603  1.0
  Ge  Ge12  1  0.283  0.258  0.159  1.0
  Ge  Ge13  1  0.717  0.742  0.841  1.0
  O  O14  1  0.280  0.591  0.527  1.0
  O  O15  1  0.720  0.409  0.473  1.0
  O  O16  1  0.075  0.091  0.499  1.0
  O  O17  1  0.925  0.909  0.501  1.0
  O  O18  1  0.384  0.572  0.236  1.0
  O  O19  1  0.616  0.428  0.764  1.0
  O  O20  1  0.414  0.381  0.022  1.0
  O  O21  1  0.586  0.619  0.978  1.0
  O  O22  1  0.448  0.074  0.318  1.0
  O  O23  1  0.552  0.926  0.682  1.0
  O  O24  1  0.173  0.193  0.042  1.0
  O  O25  1  0.827  0.807  0.958  1.0
  O  O26  1  0.334  0.293  0.495  1.0
  O  O27  1  0.666  0.707  0.505  1.0
  O  O28  1  0.208  0.921  0.963  1.0
  O  O29  1  0.792  0.079  0.037  1.0
  O  O30  1  0.067  0.427  0.160  1.0
  O  O31  1  0.933  0.573  0.840  1.0
  O  O32  1  0.140  0.907  0.267  1.0
  O  O33  1  0.860  0.093  0.733  1.0
  O  O34  1  0.447  0.149  0.830  1.0
  O  O35  1  0.553  0.851  0.170  1.0
  O  O36  1  0.025  0.367  0.688  1.0
  O  O37  1  0.975  0.633  0.312  1.0
  O  O38  1  0.249  0.735  0.748  1.0
  O  O39  1  0.751  0.265  0.252  1.0
[/CIF]
.
The material structure described by Gd4Ge3O13 crystallizes in the triclinic P-1 space group. There are four inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(3), one O(4), one O(6), and one O(9) atom. In the second Gd site, Gd(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(13), one O(5), one O(7), and two equivalent O(2) atoms. In the third Gd site, Gd(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(12), one O(2), one O(5), one O(7), and one O(8) atom. In the fourth Gd site, Gd(4) is bonded in a 7-coordinate geometry to one O(13), one O(3), one O(6), one O(8), one O(9), and two equivalent O(4) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(10), one O(11), one O(6), and one O(8) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded in a tetrahedral geometry to one O(1), one O(12), one O(3), and one O(7) atom. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(6), and one O(9) atom to form corner-sharing GeO4 tetrahedra. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(2), and one Ge(2) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Gd(3) and two equivalent Gd(2) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to one Gd(1), one Gd(4), and one Ge(2) atom. In the fourth O site, O(4) is bonded to one Gd(1), two equivalent Gd(4), and one Ge(3) atom to form distorted edge-sharing OGd3Ge tetrahedra. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Gd(2), one Gd(3), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(4), one Ge(1), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Gd(2), one Gd(3), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Gd(3), one Gd(4), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(4), and one Ge(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Gd(2), one Gd(3), and one Ge(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(3), and one Ge(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(3), and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a distorted T-shaped geometry to one Gd(1), one Gd(2), and one Gd(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Gd4Ge3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.746
_cell_length_b   9.456
_cell_length_c   10.163
_cell_angle_alpha   62.464
_cell_angle_beta   87.891
_cell_angle_gamma   69.772
_symmetry_Int_Tables_number   1
_cell_volume   533.440
_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
  Gd  Gd0  1  0.262  0.440  0.775  1.0
  Gd  Gd1  1  0.738  0.560  0.225  1.0
  Gd  Gd2  1  0.304  0.851  0.490  1.0
  Gd  Gd3  1  0.696  0.149  0.510  1.0
  Gd  Gd4  1  0.205  0.107  0.701  1.0
  Gd  Gd5  1  0.795  0.893  0.299  1.0
  Gd  Gd6  1  0.217  0.656  0.006  1.0
  Gd  Gd7  1  0.783  0.344  0.994  1.0
  Ge  Ge8  1  0.275  0.955  0.109  1.0
  Ge  Ge9  1  0.725  0.045  0.891  1.0
  Ge  Ge10  1  0.248  0.520  0.397  1.0
  Ge  Ge11  1  0.752  0.480  0.603  1.0
  Ge  Ge12  1  0.283  0.258  0.159  1.0
  Ge  Ge13  1  0.717  0.742  0.841  1.0
  O  O14  1  0.280  0.591  0.527  1.0
  O  O15  1  0.720  0.409  0.473  1.0
  O  O16  1  0.075  0.091  0.499  1.0
  O  O17  1  0.925  0.909  0.501  1.0
  O  O18  1  0.384  0.572  0.236  1.0
  O  O19  1  0.616  0.428  0.764  1.0
  O  O20  1  0.414  0.381  0.022  1.0
  O  O21  1  0.586  0.619  0.978  1.0
  O  O22  1  0.448  0.074  0.318  1.0
  O  O23  1  0.552  0.926  0.682  1.0
  O  O24  1  0.173  0.193  0.042  1.0
  O  O25  1  0.827  0.807  0.958  1.0
  O  O26  1  0.334  0.293  0.495  1.0
  O  O27  1  0.666  0.707  0.505  1.0
  O  O28  1  0.208  0.921  0.963  1.0
  O  O29  1  0.792  0.079  0.037  1.0
  O  O30  1  0.067  0.427  0.160  1.0
  O  O31  1  0.933  0.573  0.840  1.0
  O  O32  1  0.140  0.907  0.267  1.0
  O  O33  1  0.860  0.093  0.733  1.0
  O  O34  1  0.447  0.149  0.830  1.0
  O  O35  1  0.553  0.851  0.170  1.0
  O  O36  1  0.025  0.367  0.688  1.0
  O  O37  1  0.975  0.633  0.312  1.0
  O  O38  1  0.249  0.735  0.748  1.0
  O  O39  1  0.751  0.265  0.252  1.0
[/CIF]
.