The crystal structure described by YCo3 crystallizes in the trigonal R-3m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 12-coordinate geometry to three equivalent Co(2) and nine equivalent Co(1) atoms. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to six equivalent Co(3) and twelve equivalent Co(1) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Y(2), three equivalent Y(1), one Co(2), two equivalent Co(3), and four equivalent Co(1) atoms to form CoY5Co7 cuboctahedra that share corners with two equivalent Co(2)Y6Co6 cuboctahedra, corners with fifteen equivalent Co(1)Y5Co7 cuboctahedra, edges with eight equivalent Co(1)Y5Co7 cuboctahedra, faces with three equivalent Co(2)Y6Co6 cuboctahedra, and faces with eleven equivalent Co(1)Y5Co7 cuboctahedra. In the second Co site, Co(2) is bonded to six equivalent Y(1) and six equivalent Co(1) atoms to form CoY6Co6 cuboctahedra that share corners with twelve equivalent Co(1)Y5Co7 cuboctahedra, edges with six equivalent Co(2)Y6Co6 cuboctahedra, and faces with eighteen equivalent Co(1)Y5Co7 cuboctahedra. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to three equivalent Y(2) and six equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_YCo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.622
_cell_length_b   8.622
_cell_length_c   8.622
_cell_angle_alpha   33.668
_cell_angle_beta   33.668
_cell_angle_gamma   33.668
_symmetry_Int_Tables_number   1
_cell_volume   175.523
_cell_formula_units_Z   3
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
  Y  Y0  1  0.860  0.860  0.860  1.0
  Y  Y1  1  0.140  0.140  0.140  1.0
  Y  Y2  1  0.000  0.000  0.000  1.0
  Co  Co3  1  0.418  0.418  0.921  1.0
  Co  Co4  1  0.921  0.418  0.418  1.0
  Co  Co5  1  0.418  0.921  0.418  1.0
  Co  Co6  1  0.500  0.500  0.500  1.0
  Co  Co7  1  0.335  0.335  0.335  1.0
  Co  Co8  1  0.665  0.665  0.665  1.0
  Co  Co9  1  0.079  0.582  0.582  1.0
  Co  Co10  1  0.582  0.582  0.079  1.0
  Co  Co11  1  0.582  0.079  0.582  1.0
[/CIF]
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The crystal structure described by YCo3 crystallizes in the trigonal R-3m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 12-coordinate geometry to three equivalent Co(2) and nine equivalent Co(1) atoms. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to six equivalent Co(3) and twelve equivalent Co(1) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Y(2), three equivalent Y(1), one Co(2), two equivalent Co(3), and four equivalent Co(1) atoms to form CoY5Co7 cuboctahedra that share corners with two equivalent Co(2)Y6Co6 cuboctahedra, corners with fifteen equivalent Co(1)Y5Co7 cuboctahedra, edges with eight equivalent Co(1)Y5Co7 cuboctahedra, faces with three equivalent Co(2)Y6Co6 cuboctahedra, and faces with eleven equivalent Co(1)Y5Co7 cuboctahedra. In the second Co site, Co(2) is bonded to six equivalent Y(1) and six equivalent Co(1) atoms to form CoY6Co6 cuboctahedra that share corners with twelve equivalent Co(1)Y5Co7 cuboctahedra, edges with six equivalent Co(2)Y6Co6 cuboctahedra, and faces with eighteen equivalent Co(1)Y5Co7 cuboctahedra. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to three equivalent Y(2) and six equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_YCo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.622
_cell_length_b   8.622
_cell_length_c   8.622
_cell_angle_alpha   33.668
_cell_angle_beta   33.668
_cell_angle_gamma   33.668
_symmetry_Int_Tables_number   1
_cell_volume   175.523
_cell_formula_units_Z   3
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
  Y  Y0  1  0.860  0.860  0.860  1.0
  Y  Y1  1  0.140  0.140  0.140  1.0
  Y  Y2  1  0.000  0.000  0.000  1.0
  Co  Co3  1  0.418  0.418  0.921  1.0
  Co  Co4  1  0.921  0.418  0.418  1.0
  Co  Co5  1  0.418  0.921  0.418  1.0
  Co  Co6  1  0.500  0.500  0.500  1.0
  Co  Co7  1  0.335  0.335  0.335  1.0
  Co  Co8  1  0.665  0.665  0.665  1.0
  Co  Co9  1  0.079  0.582  0.582  1.0
  Co  Co10  1  0.582  0.582  0.079  1.0
  Co  Co11  1  0.582  0.079  0.582  1.0
[/CIF]
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