The material described by ErCo3Ni2 crystallizes in the hexagonal P6/mmm space group. Er(1) is bonded in a distorted hexagonal planar geometry to twelve equivalent Co(1) and six equivalent Ni(1) atoms. Co(1) is bonded to four equivalent Er(1), four equivalent Co(1), and four equivalent Ni(1) atoms to form CoEr4Co4Ni4 cuboctahedra that share corners with eight equivalent Ni(1)Er3Co6 cuboctahedra, corners with sixteen equivalent Co(1)Er4Co4Ni4 cuboctahedra, edges with eight equivalent Ni(1)Er3Co6 cuboctahedra, edges with ten equivalent Co(1)Er4Co4Ni4 cuboctahedra, faces with four equivalent Ni(1)Er3Co6 cuboctahedra, and faces with ten equivalent Co(1)Er4Co4Ni4 cuboctahedra. Ni(1) is bonded to three equivalent Er(1) and six equivalent Co(1) atoms to form distorted NiEr3Co6 cuboctahedra that share corners with twelve equivalent Co(1)Er4Co4Ni4 cuboctahedra, corners with fifteen equivalent Ni(1)Er3Co6 cuboctahedra, edges with twelve equivalent Co(1)Er4Co4Ni4 cuboctahedra, faces with five equivalent Ni(1)Er3Co6 cuboctahedra, and faces with six equivalent Co(1)Er4Co4Ni4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErCo3Ni2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.027
_cell_length_b   4.815
_cell_length_c   4.813
_cell_angle_alpha   120.012
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   80.808
_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
  Er  Er0  1  0.000  1.000  0.000  1.0
  Co  Co1  1  0.500  0.500  0.000  1.0
  Co  Co2  1  0.500  0.500  0.500  1.0
  Co  Co3  1  0.500  1.000  0.500  1.0
  Ni  Ni4  1  0.000  0.333  0.667  1.0
  Ni  Ni5  1  0.000  0.667  0.333  1.0
[/CIF]
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The material described by ErCo3Ni2 crystallizes in the hexagonal P6/mmm space group. Er(1) is bonded in a distorted hexagonal planar geometry to twelve equivalent Co(1) and six equivalent Ni(1) atoms. Co(1) is bonded to four equivalent Er(1), four equivalent Co(1), and four equivalent Ni(1) atoms to form CoEr4Co4Ni4 cuboctahedra that share corners with eight equivalent Ni(1)Er3Co6 cuboctahedra, corners with sixteen equivalent Co(1)Er4Co4Ni4 cuboctahedra, edges with eight equivalent Ni(1)Er3Co6 cuboctahedra, edges with ten equivalent Co(1)Er4Co4Ni4 cuboctahedra, faces with four equivalent Ni(1)Er3Co6 cuboctahedra, and faces with ten equivalent Co(1)Er4Co4Ni4 cuboctahedra. Ni(1) is bonded to three equivalent Er(1) and six equivalent Co(1) atoms to form distorted NiEr3Co6 cuboctahedra that share corners with twelve equivalent Co(1)Er4Co4Ni4 cuboctahedra, corners with fifteen equivalent Ni(1)Er3Co6 cuboctahedra, edges with twelve equivalent Co(1)Er4Co4Ni4 cuboctahedra, faces with five equivalent Ni(1)Er3Co6 cuboctahedra, and faces with six equivalent Co(1)Er4Co4Ni4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErCo3Ni2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.027
_cell_length_b   4.815
_cell_length_c   4.813
_cell_angle_alpha   120.012
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   80.808
_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
  Er  Er0  1  0.000  1.000  0.000  1.0
  Co  Co1  1  0.500  0.500  0.000  1.0
  Co  Co2  1  0.500  0.500  0.500  1.0
  Co  Co3  1  0.500  1.000  0.500  1.0
  Ni  Ni4  1  0.000  0.333  0.667  1.0
  Ni  Ni5  1  0.000  0.667  0.333  1.0
[/CIF]
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