data_Y(CoB)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.35
_cell_length_b   5.35
_cell_length_c   5.35
_cell_angle_alpha   141.25
_cell_angle_beta   141.25
_cell_angle_gamma   55.96
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y(CoB)2
_chemical_formula_sum   'Y1 Co2 B2'
_cell_volume   59.38
_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
  Y  Y4  1  0.0  0.0  0.0  1.0
  Co  Co2  1  0.77  0.0  0.36  1.0
  Co  Co3  1  0.0  0.77  0.36  1.0
  B  B0  1  0.0  0.0  0.15  1.0
  B  B1  1  0.0  0.0  0.29  1.0

data_Y(CoB)2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.02
_cell_length_b   5.02
_cell_length_c   5.35
_cell_angle_alpha   90.0
_cell_angle_beta   117.98
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Y(CoB)2
_chemical_formula_sum   'Y2 Co4 B4'
_cell_volume   118.75
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.0  1.0
  Co  Co1  4  0.39  0.39  0.41  1.0
  B  B2  2  0.0  0.0  0.71  1.0
  B  B3  2  0.0  0.0  0.85  1.0

Y Co Co B B
YCo2B2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two YCo2B2 clusters. Y(1) is bonded in a single-bond geometry to one B(1) atom. The Y(1)-B(1) bond length is 0.82 Å. Co(1) is bonded in a 2-coordinate geometry to one Co(1) and one B(2) atom. The Co(1)-Co(1) bond length is 1.14 Å. The Co(1)-B(2) bond length is 1.53 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a distorted linear geometry to one Y(1) and one B(2) atom. The B(1)-B(2) bond length is 0.72 Å. In the second B site, B(2) is bonded in a 3-coordinate geometry to two equivalent Co(1) and one B(1) atom.