The structure described by ErCoGa5 crystallizes in the tetragonal P4/mmm space group. Er(1) is bonded to four equivalent Ga(2) and eight equivalent Ga(1) atoms to form ErGa12 cuboctahedra that share corners with four equivalent Er(1)Ga12 cuboctahedra, faces with four equivalent Er(1)Ga12 cuboctahedra, and faces with four equivalent Ga(2)Er4Ga8 cuboctahedra. Co(1) is bonded in a body-centered cubic geometry to eight equivalent Ga(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Er(1), two equivalent Co(1), two equivalent Ga(2), and five equivalent Ga(1) atoms. In the second Ga site, Ga(2) is bonded to four equivalent Er(1) and eight equivalent Ga(1) atoms to form distorted GaEr4Ga8 cuboctahedra that share corners with four equivalent Ga(2)Er4Ga8 cuboctahedra, faces with four equivalent Er(1)Ga12 cuboctahedra, and faces with four equivalent Ga(2)Er4Ga8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErGa5Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.156
_cell_length_b   4.156
_cell_length_c   6.720
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   116.082
_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  0.000  0.000  1.0
  Ga  Ga1  1  0.000  0.500  0.310  1.0
  Ga  Ga2  1  0.000  0.500  0.690  1.0
  Ga  Ga3  1  0.500  0.000  0.310  1.0
  Ga  Ga4  1  0.500  0.000  0.690  1.0
  Ga  Ga5  1  0.500  0.500  0.000  1.0
  Co  Co6  1  0.000  0.000  0.500  1.0
[/CIF]
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The structure described by ErCoGa5 crystallizes in the tetragonal P4/mmm space group. Er(1) is bonded to four equivalent Ga(2) and eight equivalent Ga(1) atoms to form ErGa12 cuboctahedra that share corners with four equivalent Er(1)Ga12 cuboctahedra, faces with four equivalent Er(1)Ga12 cuboctahedra, and faces with four equivalent Ga(2)Er4Ga8 cuboctahedra. Co(1) is bonded in a body-centered cubic geometry to eight equivalent Ga(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Er(1), two equivalent Co(1), two equivalent Ga(2), and five equivalent Ga(1) atoms. In the second Ga site, Ga(2) is bonded to four equivalent Er(1) and eight equivalent Ga(1) atoms to form distorted GaEr4Ga8 cuboctahedra that share corners with four equivalent Ga(2)Er4Ga8 cuboctahedra, faces with four equivalent Er(1)Ga12 cuboctahedra, and faces with four equivalent Ga(2)Er4Ga8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_ErGa5Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.156
_cell_length_b   4.156
_cell_length_c   6.720
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   116.082
_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  0.000  0.000  1.0
  Ga  Ga1  1  0.000  0.500  0.310  1.0
  Ga  Ga2  1  0.000  0.500  0.690  1.0
  Ga  Ga3  1  0.500  0.000  0.310  1.0
  Ga  Ga4  1  0.500  0.000  0.690  1.0
  Ga  Ga5  1  0.500  0.500  0.000  1.0
  Co  Co6  1  0.000  0.000  0.500  1.0
[/CIF]
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