data_LaCuPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.15
_cell_length_b   5.15
_cell_length_c   5.15
_cell_angle_alpha   131.09
_cell_angle_beta   131.09
_cell_angle_gamma   71.67
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaCuPt2
_chemical_formula_sum   'La1 Cu1 Pt2'
_cell_volume   76.13
_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
  La  La1  1  0.0  0.0  0.18  1.0
  Cu  Cu0  1  0.0  0.0  0.0  1.0
  Pt  Pt2  1  0.13  0.0  0.09  1.0
  Pt  Pt3  1  0.0  0.13  0.09  1.0

data_LaCuPt2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.04
_cell_length_b   6.04
_cell_length_c   5.15
_cell_angle_alpha   90.0
_cell_angle_beta   125.84
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LaCuPt2
_chemical_formula_sum   'La2 Cu2 Pt4'
_cell_volume   152.26
_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
  La  La0  2  0.32  0.5  0.82  1.0
  Cu  Cu1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  4  0.48  0.43  0.04  1.0

La Cu Pt Pt
La Cu Pt Pt 0 3 o o o 0 2 o o o 0 1 o o o 1 3 o o o 1 2 o o o 
LaPt2Cu crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two LaPt2Cu clusters. La(1) is bonded in a 3-coordinate geometry to two equivalent Pt(1) and one Cu(1) atom. Both La(1)-Pt(1) bond lengths are 1.05 Å. The La(1)-Cu(1) bond length is 0.92 Å. Pt(1) is bonded in a single-bond geometry to one La(1) and one Cu(1) atom. The Pt(1)-Cu(1) bond length is 0.52 Å. Cu(1) is bonded in a distorted water-like geometry to one La(1) and two equivalent Pt(1) atoms.