The compound described by Er2Co3Cu is Hexagonal Laves-derived structured and crystallizes in the trigonal R-3m space group. Er(1) is bonded in a 16-coordinate geometry to four equivalent Er(1), nine equivalent Co(1), and three equivalent Cu(1) atoms. Co(1) is bonded to six equivalent Er(1), four equivalent Co(1), and two equivalent Cu(1) atoms to form CoEr6Co4Cu2 cuboctahedra that share corners with four equivalent Cu(1)Er6Co6 cuboctahedra, corners with fourteen equivalent Co(1)Er6Co4Cu2 cuboctahedra, edges with six equivalent Co(1)Er6Co4Cu2 cuboctahedra, faces with six equivalent Cu(1)Er6Co6 cuboctahedra, and faces with twelve equivalent Co(1)Er6Co4Cu2 cuboctahedra. Cu(1) is bonded to six equivalent Er(1) and six equivalent Co(1) atoms to form CuEr6Co6 cuboctahedra that share corners with six equivalent Cu(1)Er6Co6 cuboctahedra, corners with twelve equivalent Co(1)Er6Co4Cu2 cuboctahedra, edges with six equivalent Cu(1)Er6Co6 cuboctahedra, and faces with eighteen equivalent Co(1)Er6Co4Cu2 cuboctahedra. is represented by the CIF file [CIF]
data_Er2Co3Cu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.946
_cell_length_b   4.946
_cell_length_c   5.218
_cell_angle_alpha   89.999
_cell_angle_beta   61.733
_cell_angle_gamma   120.024
_symmetry_Int_Tables_number   1
_cell_volume   92.517
_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  0.515  0.758  0.727  1.0
  Er  Er1  1  0.985  0.992  0.023  1.0
  Co  Co2  1  0.250  0.375  0.375  1.0
  Co  Co3  1  0.250  0.875  0.375  1.0
  Co  Co4  1  0.750  0.375  0.375  1.0
  Cu  Cu5  1  0.750  0.375  0.875  1.0
[/CIF]
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The compound described by Er2Co3Cu is Hexagonal Laves-derived structured and crystallizes in the trigonal R-3m space group. Er(1) is bonded in a 16-coordinate geometry to four equivalent Er(1), nine equivalent Co(1), and three equivalent Cu(1) atoms. Co(1) is bonded to six equivalent Er(1), four equivalent Co(1), and two equivalent Cu(1) atoms to form CoEr6Co4Cu2 cuboctahedra that share corners with four equivalent Cu(1)Er6Co6 cuboctahedra, corners with fourteen equivalent Co(1)Er6Co4Cu2 cuboctahedra, edges with six equivalent Co(1)Er6Co4Cu2 cuboctahedra, faces with six equivalent Cu(1)Er6Co6 cuboctahedra, and faces with twelve equivalent Co(1)Er6Co4Cu2 cuboctahedra. Cu(1) is bonded to six equivalent Er(1) and six equivalent Co(1) atoms to form CuEr6Co6 cuboctahedra that share corners with six equivalent Cu(1)Er6Co6 cuboctahedra, corners with twelve equivalent Co(1)Er6Co4Cu2 cuboctahedra, edges with six equivalent Cu(1)Er6Co6 cuboctahedra, and faces with eighteen equivalent Co(1)Er6Co4Cu2 cuboctahedra. is represented by the CIF file [CIF]
data_Er2Co3Cu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.946
_cell_length_b   4.946
_cell_length_c   5.218
_cell_angle_alpha   89.999
_cell_angle_beta   61.733
_cell_angle_gamma   120.024
_symmetry_Int_Tables_number   1
_cell_volume   92.517
_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  0.515  0.758  0.727  1.0
  Er  Er1  1  0.985  0.992  0.023  1.0
  Co  Co2  1  0.250  0.375  0.375  1.0
  Co  Co3  1  0.250  0.875  0.375  1.0
  Co  Co4  1  0.750  0.375  0.375  1.0
  Cu  Cu5  1  0.750  0.375  0.875  1.0
[/CIF]
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