The compound described by Gd2Cu(GeO4)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), one O(7), one O(8), and one O(9) atom. Cu(1) is bonded in a 4-coordinate geometry to one O(10), one O(2), one O(4), one O(8), and two equivalent O(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to one O(6), one O(9), and two equivalent O(2) atoms. In the second Ge site, Ge(2) is bonded to one O(1), one O(10), one O(4), one O(5), and one O(8) atom to form corner-sharing GeO5 trigonal bipyramids. In the third Ge site, Ge(3) is bonded to one O(3), one O(7), and two equivalent O(5) atoms to form corner-sharing GeO4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a trigonal planar geometry to two equivalent Gd(2) and one Ge(1) atom. In the second O site, O(10) is bonded to one Gd(1), one Gd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OGd2CuGe trigonal pyramids. In the third O site, O(1) is bonded in a 5-coordinate geometry to one Gd(1), one Gd(2), two equivalent Cu(1), and one Ge(2) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Gd(1), one Gd(2), one Cu(1), and one Ge(1) atom. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Gd(1) and one Ge(3) atom. In the sixth O site, O(4) is bonded to one Gd(1), one Gd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OGd2CuGe trigonal pyramids. In the seventh O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Gd(1), one Gd(2), one Ge(2), and one Ge(3) atom. In the eighth O site, O(6) is bonded in a trigonal planar geometry to two equivalent Gd(1) and one Ge(1) atom. In the ninth O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Gd(2) and one Ge(3) atom. In the tenth O site, O(8) is bonded to one Gd(1), one Gd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OGd2CuGe trigonal pyramids. is represented by the CIF file [CIF]
data_Gd2Cu(GeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.177
_cell_length_b   8.317
_cell_length_c   9.041
_cell_angle_alpha   117.137
_cell_angle_beta   106.267
_cell_angle_gamma   90.770
_symmetry_Int_Tables_number   1
_cell_volume   327.969
_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  0.116  0.299  0.760  1.0
  Gd  Gd1  1  0.357  0.539  0.240  1.0
  Gd  Gd2  1  0.366  0.044  0.242  1.0
  Gd  Gd3  1  0.124  0.802  0.758  1.0
  Cu  Cu4  1  0.548  0.926  0.586  1.0
  Cu  Cu5  1  0.962  0.340  0.414  1.0
  Ge  Ge6  1  0.787  0.163  0.000  1.0
  Ge  Ge7  1  0.970  0.888  0.420  1.0
  Ge  Ge8  1  0.549  0.468  0.580  1.0
  Ge  Ge9  1  0.691  0.667  0.000  1.0
  O  O10  1  0.167  0.093  0.468  1.0
  O  O11  1  0.700  0.625  0.532  1.0
  O  O12  1  0.483  0.065  0.813  1.0
  O  O13  1  0.671  0.252  0.187  1.0
  O  O14  1  0.484  0.494  0.000  1.0
  O  O15  1  0.197  0.750  0.482  1.0
  O  O16  1  0.715  0.268  0.518  1.0
  O  O17  1  0.001  0.758  0.184  1.0
  O  O18  1  0.816  0.574  0.816  1.0
  O  O19  1  0.999  0.335  0.000  1.0
  O  O20  1  0.483  0.834  0.000  1.0
  O  O21  1  0.598  0.840  0.343  1.0
  O  O22  1  0.255  0.497  0.657  1.0
  O  O23  1  0.006  0.998  0.000  1.0
  O  O24  1  0.930  0.002  0.656  1.0
  O  O25  1  0.274  0.346  0.344  1.0
[/CIF]
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The compound described by Gd2Cu(GeO4)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), one O(7), one O(8), and one O(9) atom. Cu(1) is bonded in a 4-coordinate geometry to one O(10), one O(2), one O(4), one O(8), and two equivalent O(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to one O(6), one O(9), and two equivalent O(2) atoms. In the second Ge site, Ge(2) is bonded to one O(1), one O(10), one O(4), one O(5), and one O(8) atom to form corner-sharing GeO5 trigonal bipyramids. In the third Ge site, Ge(3) is bonded to one O(3), one O(7), and two equivalent O(5) atoms to form corner-sharing GeO4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a trigonal planar geometry to two equivalent Gd(2) and one Ge(1) atom. In the second O site, O(10) is bonded to one Gd(1), one Gd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OGd2CuGe trigonal pyramids. In the third O site, O(1) is bonded in a 5-coordinate geometry to one Gd(1), one Gd(2), two equivalent Cu(1), and one Ge(2) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Gd(1), one Gd(2), one Cu(1), and one Ge(1) atom. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Gd(1) and one Ge(3) atom. In the sixth O site, O(4) is bonded to one Gd(1), one Gd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OGd2CuGe trigonal pyramids. In the seventh O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Gd(1), one Gd(2), one Ge(2), and one Ge(3) atom. In the eighth O site, O(6) is bonded in a trigonal planar geometry to two equivalent Gd(1) and one Ge(1) atom. In the ninth O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Gd(2) and one Ge(3) atom. In the tenth O site, O(8) is bonded to one Gd(1), one Gd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OGd2CuGe trigonal pyramids. is represented by the CIF file [CIF]
data_Gd2Cu(GeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.177
_cell_length_b   8.317
_cell_length_c   9.041
_cell_angle_alpha   117.137
_cell_angle_beta   106.267
_cell_angle_gamma   90.770
_symmetry_Int_Tables_number   1
_cell_volume   327.969
_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  0.116  0.299  0.760  1.0
  Gd  Gd1  1  0.357  0.539  0.240  1.0
  Gd  Gd2  1  0.366  0.044  0.242  1.0
  Gd  Gd3  1  0.124  0.802  0.758  1.0
  Cu  Cu4  1  0.548  0.926  0.586  1.0
  Cu  Cu5  1  0.962  0.340  0.414  1.0
  Ge  Ge6  1  0.787  0.163  0.000  1.0
  Ge  Ge7  1  0.970  0.888  0.420  1.0
  Ge  Ge8  1  0.549  0.468  0.580  1.0
  Ge  Ge9  1  0.691  0.667  0.000  1.0
  O  O10  1  0.167  0.093  0.468  1.0
  O  O11  1  0.700  0.625  0.532  1.0
  O  O12  1  0.483  0.065  0.813  1.0
  O  O13  1  0.671  0.252  0.187  1.0
  O  O14  1  0.484  0.494  0.000  1.0
  O  O15  1  0.197  0.750  0.482  1.0
  O  O16  1  0.715  0.268  0.518  1.0
  O  O17  1  0.001  0.758  0.184  1.0
  O  O18  1  0.816  0.574  0.816  1.0
  O  O19  1  0.999  0.335  0.000  1.0
  O  O20  1  0.483  0.834  0.000  1.0
  O  O21  1  0.598  0.840  0.343  1.0
  O  O22  1  0.255  0.497  0.657  1.0
  O  O23  1  0.006  0.998  0.000  1.0
  O  O24  1  0.930  0.002  0.656  1.0
  O  O25  1  0.274  0.346  0.344  1.0
[/CIF]
.