The material described by MgErSn crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded in a distorted square co-planar geometry to four equivalent Sn(1) atoms. Er(1) is bonded to five equivalent Sn(1) atoms to form a mixture of distorted edge and corner-sharing ErSn5 square pyramids. Sn(1) is bonded in a 9-coordinate geometry to four equivalent Mg(1) and five equivalent Er(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErMgSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.465
_cell_length_b   8.465
_cell_length_c   8.465
_cell_angle_alpha   150.214
_cell_angle_beta   150.214
_cell_angle_gamma   42.628
_symmetry_Int_Tables_number   1
_cell_volume   149.337
_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
  Er  Er0  1  0.668  0.668  0.000  1.0
  Er  Er1  1  0.332  0.332  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.500  1.0
  Sn  Sn4  1  0.137  0.137  0.000  1.0
  Sn  Sn5  1  0.863  0.863  0.000  1.0
[/CIF]
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The material described by MgErSn crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded in a distorted square co-planar geometry to four equivalent Sn(1) atoms. Er(1) is bonded to five equivalent Sn(1) atoms to form a mixture of distorted edge and corner-sharing ErSn5 square pyramids. Sn(1) is bonded in a 9-coordinate geometry to four equivalent Mg(1) and five equivalent Er(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErMgSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.465
_cell_length_b   8.465
_cell_length_c   8.465
_cell_angle_alpha   150.214
_cell_angle_beta   150.214
_cell_angle_gamma   42.628
_symmetry_Int_Tables_number   1
_cell_volume   149.337
_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
  Er  Er0  1  0.668  0.668  0.000  1.0
  Er  Er1  1  0.332  0.332  0.000  1.0
  Mg  Mg2  1  0.000  0.500  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.500  1.0
  Sn  Sn4  1  0.137  0.137  0.000  1.0
  Sn  Sn5  1  0.863  0.863  0.000  1.0
[/CIF]
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