data_CdPd2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   4.85
_cell_angle_alpha   127.29
_cell_angle_beta   127.29
_cell_angle_gamma   77.78
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CdPd2Se
_chemical_formula_sum   'Cd1 Pd2 Se1'
_cell_volume   69.98
_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
  Cd  Cd0  1  0.0  0.0  0.77  1.0
  Pd  Pd1  1  0.0  0.15  0.89  1.0
  Pd  Pd2  1  0.15  0.0  0.89  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

data_CdPd2Se
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.09
_cell_length_b   6.09
_cell_length_c   4.85
_cell_angle_alpha   90.0
_cell_angle_beta   128.89
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CdPd2Se
_chemical_formula_sum   'Cd2 Pd4 Se2'
_cell_volume   139.96
_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
  Cd  Cd0  2  0.23  0.0  0.23  1.0
  Pd  Pd1  4  0.19  0.08  0.27  1.0
  Se  Se2  2  0.0  0.0  0.0  1.0

Cd Pd Pd Se
Pd2CdSe is Copper structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Pd2CdSe clusters. Pd(1) is bonded in a single-bond geometry to one Cd(1) and one Se(1) atom. The Pd(1)-Cd(1) bond length is 0.60 Å. The Pd(1)-Se(1) bond length is 1.16 Å. Cd(1) is bonded in a distorted water-like geometry to two equivalent Pd(1) and one Se(1) atom. The Cd(1)-Se(1) bond length is 1.09 Å. Se(1) is bonded in a 3-coordinate geometry to two equivalent Pd(1) and one Cd(1) atom.