The structure described by ErMn2 is Hexagonal Laves structured and crystallizes in the orthorhombic Cmcm space group. Er(1) is bonded in a 16-coordinate geometry to four equivalent Er(1), three equivalent Mn(1), three equivalent Mn(2), and six equivalent Mn(3) atoms. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to six equivalent Er(1), two equivalent Mn(2), and four equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing MnEr6Mn6 cuboctahedra. In the second Mn site, Mn(2) is bonded to six equivalent Er(1), two equivalent Mn(1), and four equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing MnEr6Mn6 cuboctahedra. In the third Mn site, Mn(3) is bonded to six equivalent Er(1), two equivalent Mn(1), two equivalent Mn(2), and two equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing MnEr6Mn6 cuboctahedra. is represented by the CIF card [CIF]
data_ErMn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.204
_cell_length_b   5.204
_cell_length_c   8.518
_cell_angle_alpha   89.943
_cell_angle_beta   89.943
_cell_angle_gamma   61.844
_symmetry_Int_Tables_number   1
_cell_volume   203.393
_cell_formula_units_Z   4
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  0.937  1.0
  Er  Er1  1  0.332  0.332  0.063  1.0
  Er  Er2  1  0.332  0.332  0.437  1.0
  Er  Er3  1  0.668  0.668  0.563  1.0
  Mn  Mn4  1  0.000  0.000  0.000  1.0
  Mn  Mn5  1  0.000  0.000  0.500  1.0
  Mn  Mn6  1  0.184  0.184  0.750  1.0
  Mn  Mn7  1  0.816  0.816  0.250  1.0
  Mn  Mn8  1  0.321  0.831  0.250  1.0
  Mn  Mn9  1  0.831  0.321  0.250  1.0
  Mn  Mn10  1  0.679  0.169  0.750  1.0
  Mn  Mn11  1  0.169  0.679  0.750  1.0
[/CIF]
.
The structure described by ErMn2 is Hexagonal Laves structured and crystallizes in the orthorhombic Cmcm space group. Er(1) is bonded in a 16-coordinate geometry to four equivalent Er(1), three equivalent Mn(1), three equivalent Mn(2), and six equivalent Mn(3) atoms. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to six equivalent Er(1), two equivalent Mn(2), and four equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing MnEr6Mn6 cuboctahedra. In the second Mn site, Mn(2) is bonded to six equivalent Er(1), two equivalent Mn(1), and four equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing MnEr6Mn6 cuboctahedra. In the third Mn site, Mn(3) is bonded to six equivalent Er(1), two equivalent Mn(1), two equivalent Mn(2), and two equivalent Mn(3) atoms to form a mixture of corner, edge, and face-sharing MnEr6Mn6 cuboctahedra. is represented by the CIF card [CIF]
data_ErMn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.204
_cell_length_b   5.204
_cell_length_c   8.518
_cell_angle_alpha   89.943
_cell_angle_beta   89.943
_cell_angle_gamma   61.844
_symmetry_Int_Tables_number   1
_cell_volume   203.393
_cell_formula_units_Z   4
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  0.937  1.0
  Er  Er1  1  0.332  0.332  0.063  1.0
  Er  Er2  1  0.332  0.332  0.437  1.0
  Er  Er3  1  0.668  0.668  0.563  1.0
  Mn  Mn4  1  0.000  0.000  0.000  1.0
  Mn  Mn5  1  0.000  0.000  0.500  1.0
  Mn  Mn6  1  0.184  0.184  0.750  1.0
  Mn  Mn7  1  0.816  0.816  0.250  1.0
  Mn  Mn8  1  0.321  0.831  0.250  1.0
  Mn  Mn9  1  0.831  0.321  0.250  1.0
  Mn  Mn10  1  0.679  0.169  0.750  1.0
  Mn  Mn11  1  0.169  0.679  0.750  1.0
[/CIF]
.