The compound described by CuNd2Ge2O8 crystallizes in the monoclinic Cm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(3), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the second Nd site, Nd(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(6), one O(7), and one O(8) atom. Cu(1) is bonded in a 4-coordinate geometry to one O(1), one O(5), one O(7), and one O(8) atom. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to one O(4), one O(9), and two equivalent O(7) atoms. In the second Ge site, Ge(2) is bonded to one O(1), one O(10), one O(5), one O(6), and one O(8) atom to form corner-sharing GeO5 trigonal bipyramids. In the third Ge site, Ge(3) is bonded to one O(2), one O(3), and two equivalent O(6) atoms to form corner-sharing GeO4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Nd(1), one Nd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing ONd2CuGe trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Nd(2) and one Ge(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one Ge(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Nd(2) and one Ge(1) atom. In the fifth O site, O(5) is bonded to one Nd(1), one Nd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing ONd2CuGe trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Nd(1), one Nd(2), one Ge(2), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Nd(1), one Nd(2), one Cu(1), and one Ge(1) atom. In the eighth O site, O(8) is bonded to one Nd(1), one Nd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing ONd2CuGe trigonal pyramids. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one Ge(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Nd(1), one Nd(2), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd2Cu(GeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.178
_cell_length_b   9.178
_cell_length_c   5.211
_cell_angle_alpha   73.981
_cell_angle_beta   73.981
_cell_angle_gamma   114.540
_symmetry_Int_Tables_number   1
_cell_volume   343.353
_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
  Nd  Nd0  1  0.119  0.361  0.290  1.0
  Nd  Nd1  1  0.863  0.622  0.799  1.0
  Nd  Nd2  1  0.622  0.863  0.799  1.0
  Nd  Nd3  1  0.361  0.119  0.290  1.0
  Cu  Cu4  1  0.823  0.236  0.992  1.0
  Cu  Cu5  1  0.236  0.823  0.992  1.0
  Ge  Ge6  1  0.000  0.000  0.989  1.0
  Ge  Ge7  1  0.694  0.273  0.533  1.0
  Ge  Ge8  1  0.496  0.496  0.589  1.0
  Ge  Ge9  1  0.273  0.694  0.533  1.0
  O  O10  1  0.407  0.889  0.172  1.0
  O  O11  1  0.665  0.665  0.623  1.0
  O  O12  1  0.332  0.332  0.956  1.0
  O  O13  1  0.831  0.831  0.952  1.0
  O  O14  1  0.162  0.815  0.687  1.0
  O  O15  1  0.404  0.589  0.373  1.0
  O  O16  1  0.913  0.099  0.190  1.0
  O  O17  1  0.322  0.667  0.853  1.0
  O  O18  1  0.161  0.161  0.612  1.0
  O  O19  1  0.815  0.162  0.687  1.0
  O  O20  1  0.589  0.404  0.373  1.0
  O  O21  1  0.539  0.072  0.541  1.0
  O  O22  1  0.667  0.322  0.853  1.0
  O  O23  1  0.099  0.913  0.190  1.0
  O  O24  1  0.072  0.539  0.541  1.0
  O  O25  1  0.889  0.407  0.172  1.0
[/CIF]
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The compound described by CuNd2Ge2O8 crystallizes in the monoclinic Cm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(3), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the second Nd site, Nd(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(6), one O(7), and one O(8) atom. Cu(1) is bonded in a 4-coordinate geometry to one O(1), one O(5), one O(7), and one O(8) atom. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to one O(4), one O(9), and two equivalent O(7) atoms. In the second Ge site, Ge(2) is bonded to one O(1), one O(10), one O(5), one O(6), and one O(8) atom to form corner-sharing GeO5 trigonal bipyramids. In the third Ge site, Ge(3) is bonded to one O(2), one O(3), and two equivalent O(6) atoms to form corner-sharing GeO4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Nd(1), one Nd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing ONd2CuGe trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Nd(2) and one Ge(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one Ge(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Nd(2) and one Ge(1) atom. In the fifth O site, O(5) is bonded to one Nd(1), one Nd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing ONd2CuGe trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Nd(1), one Nd(2), one Ge(2), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Nd(1), one Nd(2), one Cu(1), and one Ge(1) atom. In the eighth O site, O(8) is bonded to one Nd(1), one Nd(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing ONd2CuGe trigonal pyramids. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one Ge(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Nd(1), one Nd(2), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd2Cu(GeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.178
_cell_length_b   9.178
_cell_length_c   5.211
_cell_angle_alpha   73.981
_cell_angle_beta   73.981
_cell_angle_gamma   114.540
_symmetry_Int_Tables_number   1
_cell_volume   343.353
_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
  Nd  Nd0  1  0.119  0.361  0.290  1.0
  Nd  Nd1  1  0.863  0.622  0.799  1.0
  Nd  Nd2  1  0.622  0.863  0.799  1.0
  Nd  Nd3  1  0.361  0.119  0.290  1.0
  Cu  Cu4  1  0.823  0.236  0.992  1.0
  Cu  Cu5  1  0.236  0.823  0.992  1.0
  Ge  Ge6  1  0.000  0.000  0.989  1.0
  Ge  Ge7  1  0.694  0.273  0.533  1.0
  Ge  Ge8  1  0.496  0.496  0.589  1.0
  Ge  Ge9  1  0.273  0.694  0.533  1.0
  O  O10  1  0.407  0.889  0.172  1.0
  O  O11  1  0.665  0.665  0.623  1.0
  O  O12  1  0.332  0.332  0.956  1.0
  O  O13  1  0.831  0.831  0.952  1.0
  O  O14  1  0.162  0.815  0.687  1.0
  O  O15  1  0.404  0.589  0.373  1.0
  O  O16  1  0.913  0.099  0.190  1.0
  O  O17  1  0.322  0.667  0.853  1.0
  O  O18  1  0.161  0.161  0.612  1.0
  O  O19  1  0.815  0.162  0.687  1.0
  O  O20  1  0.589  0.404  0.373  1.0
  O  O21  1  0.539  0.072  0.541  1.0
  O  O22  1  0.667  0.322  0.853  1.0
  O  O23  1  0.099  0.913  0.190  1.0
  O  O24  1  0.072  0.539  0.541  1.0
  O  O25  1  0.889  0.407  0.172  1.0
[/CIF]
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