The material structure described by MgDySe3 is Ilmenite structured and crystallizes in the trigonal R-3 space group. Mg(1) is bonded to six equivalent Se(1) atoms to form MgSe6 octahedra that share corners with nine equivalent Dy(1)Se6 octahedra, edges with three equivalent Mg(1)Se6 octahedra, and  a faceface with one Dy(1)Se6 octahedra. The corner-sharing octahedral tilt angles range from 41-56°. Dy(1) is bonded to six equivalent Se(1) atoms to form DySe6 octahedra that share corners with nine equivalent Mg(1)Se6 octahedra, edges with three equivalent Dy(1)Se6 octahedra, and  a faceface with one Mg(1)Se6 octahedra. The corner-sharing octahedral tilt angles range from 41-56°. Se(1) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Dy(1) atoms. is represented by the CIF file [CIF]
data_DyMgSe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.909
_cell_length_b   6.909
_cell_length_c   7.581
_cell_angle_alpha   62.894
_cell_angle_beta   62.894
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   266.481
_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  0.347  0.347  0.959  1.0
  Dy  Dy1  1  0.653  0.653  0.041  1.0
  Mg  Mg2  1  0.161  0.161  0.518  1.0
  Mg  Mg3  1  0.839  0.839  0.482  1.0
  Se  Se4  1  0.226  0.948  0.251  1.0
  Se  Se5  1  0.774  0.052  0.749  1.0
  Se  Se6  1  0.948  0.574  0.251  1.0
  Se  Se7  1  0.052  0.426  0.749  1.0
  Se  Se8  1  0.574  0.226  0.251  1.0
  Se  Se9  1  0.426  0.774  0.749  1.0
[/CIF]
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The material structure described by MgDySe3 is Ilmenite structured and crystallizes in the trigonal R-3 space group. Mg(1) is bonded to six equivalent Se(1) atoms to form MgSe6 octahedra that share corners with nine equivalent Dy(1)Se6 octahedra, edges with three equivalent Mg(1)Se6 octahedra, and  a faceface with one Dy(1)Se6 octahedra. The corner-sharing octahedral tilt angles range from 41-56°. Dy(1) is bonded to six equivalent Se(1) atoms to form DySe6 octahedra that share corners with nine equivalent Mg(1)Se6 octahedra, edges with three equivalent Dy(1)Se6 octahedra, and  a faceface with one Mg(1)Se6 octahedra. The corner-sharing octahedral tilt angles range from 41-56°. Se(1) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Dy(1) atoms. is represented by the CIF file [CIF]
data_DyMgSe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.909
_cell_length_b   6.909
_cell_length_c   7.581
_cell_angle_alpha   62.894
_cell_angle_beta   62.894
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   266.481
_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  0.347  0.347  0.959  1.0
  Dy  Dy1  1  0.653  0.653  0.041  1.0
  Mg  Mg2  1  0.161  0.161  0.518  1.0
  Mg  Mg3  1  0.839  0.839  0.482  1.0
  Se  Se4  1  0.226  0.948  0.251  1.0
  Se  Se5  1  0.774  0.052  0.749  1.0
  Se  Se6  1  0.948  0.574  0.251  1.0
  Se  Se7  1  0.052  0.426  0.749  1.0
  Se  Se8  1  0.574  0.226  0.251  1.0
  Se  Se9  1  0.426  0.774  0.749  1.0
[/CIF]
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