The crystal structure described by Dy2Ge2O7 crystallizes in the monoclinic P2_1/c space group. Dy(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted DyO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with three equivalent Dy(1)O6 octahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with six equivalent Dy(1)O6 octahedra and  a cornercorner with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-63°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Dy(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Dy(1) and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Dy(1) and one Ge(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_Dy2Ge2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.018
_cell_length_b   4.944
_cell_length_c   5.633
_cell_angle_alpha   84.407
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   305.422
_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
  Dy  Dy0  1  0.149  0.890  0.900  1.0
  Dy  Dy1  1  0.351  0.890  0.400  1.0
  Dy  Dy2  1  0.649  0.110  0.600  1.0
  Dy  Dy3  1  0.851  0.110  0.100  1.0
  Ge  Ge4  1  0.881  0.639  0.653  1.0
  Ge  Ge5  1  0.619  0.639  0.153  1.0
  Ge  Ge6  1  0.381  0.361  0.847  1.0
  Ge  Ge7  1  0.119  0.361  0.347  1.0
  O  O8  1  0.692  0.881  0.955  1.0
  O  O9  1  0.808  0.881  0.455  1.0
  O  O10  1  0.950  0.803  0.882  1.0
  O  O11  1  0.550  0.803  0.382  1.0
  O  O12  1  0.290  0.629  0.727  1.0
  O  O13  1  0.210  0.629  0.227  1.0
  O  O14  1  0.000  0.500  0.500  1.0
  O  O15  1  0.500  0.500  0.000  1.0
  O  O16  1  0.790  0.371  0.773  1.0
  O  O17  1  0.710  0.371  0.273  1.0
  O  O18  1  0.450  0.197  0.618  1.0
  O  O19  1  0.050  0.197  0.118  1.0
  O  O20  1  0.192  0.119  0.545  1.0
  O  O21  1  0.308  0.119  0.045  1.0
[/CIF]
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The crystal structure described by Dy2Ge2O7 crystallizes in the monoclinic P2_1/c space group. Dy(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted DyO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with three equivalent Dy(1)O6 octahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with six equivalent Dy(1)O6 octahedra and  a cornercorner with one Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-63°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Dy(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Dy(1) and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Dy(1) and one Ge(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_Dy2Ge2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.018
_cell_length_b   4.944
_cell_length_c   5.633
_cell_angle_alpha   84.407
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   305.422
_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
  Dy  Dy0  1  0.149  0.890  0.900  1.0
  Dy  Dy1  1  0.351  0.890  0.400  1.0
  Dy  Dy2  1  0.649  0.110  0.600  1.0
  Dy  Dy3  1  0.851  0.110  0.100  1.0
  Ge  Ge4  1  0.881  0.639  0.653  1.0
  Ge  Ge5  1  0.619  0.639  0.153  1.0
  Ge  Ge6  1  0.381  0.361  0.847  1.0
  Ge  Ge7  1  0.119  0.361  0.347  1.0
  O  O8  1  0.692  0.881  0.955  1.0
  O  O9  1  0.808  0.881  0.455  1.0
  O  O10  1  0.950  0.803  0.882  1.0
  O  O11  1  0.550  0.803  0.382  1.0
  O  O12  1  0.290  0.629  0.727  1.0
  O  O13  1  0.210  0.629  0.227  1.0
  O  O14  1  0.000  0.500  0.500  1.0
  O  O15  1  0.500  0.500  0.000  1.0
  O  O16  1  0.790  0.371  0.773  1.0
  O  O17  1  0.710  0.371  0.273  1.0
  O  O18  1  0.450  0.197  0.618  1.0
  O  O19  1  0.050  0.197  0.118  1.0
  O  O20  1  0.192  0.119  0.545  1.0
  O  O21  1  0.308  0.119  0.045  1.0
[/CIF]
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