The material described by Pr2Cu(GeO4)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(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 Pr site, Pr(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), 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(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 distorted trigonal planar geometry to two equivalent Pr(2) and one Ge(1) atom. In the second O site, O(10) is bonded to one Pr(1), one Pr(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OPr2CuGe trigonal pyramids. In the third O site, O(1) is bonded in a 1-coordinate geometry to one Pr(1), one Pr(2), and one Ge(2) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Pr(1), one Pr(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 Pr(1) and one Ge(3) atom. In the sixth O site, O(4) is bonded to one Pr(1), one Pr(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OPr2CuGe trigonal pyramids. In the seventh O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Pr(1), one Pr(2), one Ge(2), and one Ge(3) atom. In the eighth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Pr(1) and one Ge(1) atom. In the ninth O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Pr(2) and one Ge(3) atom. In the tenth O site, O(8) is bonded to one Pr(1), one Pr(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OPr2CuGe trigonal pyramids. is represented by the CIF file [CIF]
data_Pr2Cu(GeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.237
_cell_length_b   9.237
_cell_length_c   5.226
_cell_angle_alpha   73.979
_cell_angle_beta   73.979
_cell_angle_gamma   114.623
_symmetry_Int_Tables_number   1
_cell_volume   348.466
_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
  Pr  Pr0  1  0.461  0.702  0.182  1.0
  Pr  Pr1  1  0.702  0.461  0.182  1.0
  Pr  Pr2  1  0.199  0.957  0.676  1.0
  Pr  Pr3  1  0.957  0.199  0.676  1.0
  Cu  Cu4  1  0.660  0.074  0.379  1.0
  Cu  Cu5  1  0.074  0.660  0.379  1.0
  Ge  Ge6  1  0.837  0.837  0.376  1.0
  Ge  Ge7  1  0.532  0.111  0.919  1.0
  Ge  Ge8  1  0.111  0.532  0.919  1.0
  Ge  Ge9  1  0.333  0.333  0.973  1.0
  O  O10  1  0.379  0.912  0.926  1.0
  O  O11  1  0.912  0.379  0.926  1.0
  O  O12  1  0.749  0.935  0.577  1.0
  O  O13  1  0.935  0.749  0.577  1.0
  O  O14  1  0.502  0.502  0.006  1.0
  O  O15  1  0.726  0.244  0.559  1.0
  O  O16  1  0.244  0.726  0.559  1.0
  O  O17  1  0.426  0.242  0.761  1.0
  O  O18  1  0.242  0.426  0.761  1.0
  O  O19  1  0.669  0.669  0.338  1.0
  O  O20  1  0.170  0.170  0.340  1.0
  O  O21  1  0.506  0.159  0.238  1.0
  O  O22  1  0.159  0.506  0.238  1.0
  O  O23  1  0.999  0.999  0.001  1.0
  O  O24  1  0.653  0.001  0.074  1.0
  O  O25  1  0.001  0.653  0.074  1.0
[/CIF]
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The material described by Pr2Cu(GeO4)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(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 Pr site, Pr(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), 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(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 distorted trigonal planar geometry to two equivalent Pr(2) and one Ge(1) atom. In the second O site, O(10) is bonded to one Pr(1), one Pr(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OPr2CuGe trigonal pyramids. In the third O site, O(1) is bonded in a 1-coordinate geometry to one Pr(1), one Pr(2), and one Ge(2) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Pr(1), one Pr(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 Pr(1) and one Ge(3) atom. In the sixth O site, O(4) is bonded to one Pr(1), one Pr(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OPr2CuGe trigonal pyramids. In the seventh O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Pr(1), one Pr(2), one Ge(2), and one Ge(3) atom. In the eighth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Pr(1) and one Ge(1) atom. In the ninth O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Pr(2) and one Ge(3) atom. In the tenth O site, O(8) is bonded to one Pr(1), one Pr(2), one Cu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OPr2CuGe trigonal pyramids. is represented by the CIF file [CIF]
data_Pr2Cu(GeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.237
_cell_length_b   9.237
_cell_length_c   5.226
_cell_angle_alpha   73.979
_cell_angle_beta   73.979
_cell_angle_gamma   114.623
_symmetry_Int_Tables_number   1
_cell_volume   348.466
_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
  Pr  Pr0  1  0.461  0.702  0.182  1.0
  Pr  Pr1  1  0.702  0.461  0.182  1.0
  Pr  Pr2  1  0.199  0.957  0.676  1.0
  Pr  Pr3  1  0.957  0.199  0.676  1.0
  Cu  Cu4  1  0.660  0.074  0.379  1.0
  Cu  Cu5  1  0.074  0.660  0.379  1.0
  Ge  Ge6  1  0.837  0.837  0.376  1.0
  Ge  Ge7  1  0.532  0.111  0.919  1.0
  Ge  Ge8  1  0.111  0.532  0.919  1.0
  Ge  Ge9  1  0.333  0.333  0.973  1.0
  O  O10  1  0.379  0.912  0.926  1.0
  O  O11  1  0.912  0.379  0.926  1.0
  O  O12  1  0.749  0.935  0.577  1.0
  O  O13  1  0.935  0.749  0.577  1.0
  O  O14  1  0.502  0.502  0.006  1.0
  O  O15  1  0.726  0.244  0.559  1.0
  O  O16  1  0.244  0.726  0.559  1.0
  O  O17  1  0.426  0.242  0.761  1.0
  O  O18  1  0.242  0.426  0.761  1.0
  O  O19  1  0.669  0.669  0.338  1.0
  O  O20  1  0.170  0.170  0.340  1.0
  O  O21  1  0.506  0.159  0.238  1.0
  O  O22  1  0.159  0.506  0.238  1.0
  O  O23  1  0.999  0.999  0.001  1.0
  O  O24  1  0.653  0.001  0.074  1.0
  O  O25  1  0.001  0.653  0.074  1.0
[/CIF]
.