The material structure described by LiDy2Nb2O8 crystallizes in the monoclinic C2 space group. Li(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form LiO4 tetrahedra that share corners with two equivalent Nb(1)O4 tetrahedra and  an edgeedge with one Nb(2)O4 trigonal pyramid. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NbO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra. In the second Nb site, Nb(2) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted NbO4 trigonal pyramids that share  an edgeedge with one Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Dy(1), one Dy(2), and one Nb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), one Dy(1), one Dy(2), and one Nb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Dy(1), one Dy(2), and one Nb(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), one Dy(1), one Dy(2), and one Nb(2) atom. is represented by the CIF file [CIF]
data_LiDy2Nb2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.238
_cell_length_b   6.238
_cell_length_c   6.129
_cell_angle_alpha   106.942
_cell_angle_beta   106.942
_cell_angle_gamma   114.420
_symmetry_Int_Tables_number   1
_cell_volume   183.034
_cell_formula_units_Z   1
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
  Li  Li0  1  0.365  0.635  0.250  1.0
  Dy  Dy1  1  0.643  0.357  0.250  1.0
  Dy  Dy2  1  0.368  0.632  0.750  1.0
  Nb  Nb3  1  0.882  0.118  0.750  1.0
  Nb  Nb4  1  0.104  0.896  0.250  1.0
  O  O5  1  0.670  0.108  0.916  1.0
  O  O6  1  0.255  0.310  0.961  1.0
  O  O7  1  0.892  0.330  0.584  1.0
  O  O8  1  0.690  0.745  0.539  1.0
  O  O9  1  0.302  0.274  0.431  1.0
  O  O10  1  0.726  0.698  0.069  1.0
  O  O11  1  0.120  0.652  0.390  1.0
  O  O12  1  0.348  0.880  0.110  1.0
[/CIF]
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The material structure described by LiDy2Nb2O8 crystallizes in the monoclinic C2 space group. Li(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form LiO4 tetrahedra that share corners with two equivalent Nb(1)O4 tetrahedra and  an edgeedge with one Nb(2)O4 trigonal pyramid. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NbO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra. In the second Nb site, Nb(2) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted NbO4 trigonal pyramids that share  an edgeedge with one Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Dy(1), one Dy(2), and one Nb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), one Dy(1), one Dy(2), and one Nb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Dy(1), one Dy(2), and one Nb(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), one Dy(1), one Dy(2), and one Nb(2) atom. is represented by the CIF file [CIF]
data_LiDy2Nb2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.238
_cell_length_b   6.238
_cell_length_c   6.129
_cell_angle_alpha   106.942
_cell_angle_beta   106.942
_cell_angle_gamma   114.420
_symmetry_Int_Tables_number   1
_cell_volume   183.034
_cell_formula_units_Z   1
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
  Li  Li0  1  0.365  0.635  0.250  1.0
  Dy  Dy1  1  0.643  0.357  0.250  1.0
  Dy  Dy2  1  0.368  0.632  0.750  1.0
  Nb  Nb3  1  0.882  0.118  0.750  1.0
  Nb  Nb4  1  0.104  0.896  0.250  1.0
  O  O5  1  0.670  0.108  0.916  1.0
  O  O6  1  0.255  0.310  0.961  1.0
  O  O7  1  0.892  0.330  0.584  1.0
  O  O8  1  0.690  0.745  0.539  1.0
  O  O9  1  0.302  0.274  0.431  1.0
  O  O10  1  0.726  0.698  0.069  1.0
  O  O11  1  0.120  0.652  0.390  1.0
  O  O12  1  0.348  0.880  0.110  1.0
[/CIF]
.