data_EuPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.81
_cell_length_b   4.81
_cell_length_c   5.93
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuPt
_chemical_formula_sum   'Eu2 Pt2'
_cell_volume   118.89
_cell_formula_units_Z   2
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
  Eu  Eu0  1  0.4  0.39  0.45  1.0
  Eu  Eu1  1  0.0  0.78  0.48  1.0
  Pt  Pt2  1  0.4  0.39  0.48  1.0
  Pt  Pt3  1  0.0  0.78  0.45  1.0

data_EuPt
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   8.33
_cell_length_b   4.81
_cell_length_c   5.93
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   EuPt
_chemical_formula_sum   'Eu4 Pt4'
_cell_volume   237.79
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-x, y, -z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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
  Eu  Eu0  4  0.19  0.0  0.98  1.0
  Pt  Pt1  4  0.19  0.0  0.02  1.0

Eu Eu Pt Pt
EuPt is alpha carbon monoxide-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two EuPt clusters. Eu(1) is bonded in a single-bond geometry to one Pt(1) atom. The Eu(1)-Pt(1) bond length is 0.19 Å. Pt(1) is bonded in a single-bond geometry to one Eu(1) atom.