data_KCdSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.96
_cell_length_b   5.96
_cell_length_c   5.96
_cell_angle_alpha   142.84
_cell_angle_beta   119.94
_cell_angle_gamma   72.78
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KCdSi2
_chemical_formula_sum   'K1 Cd1 Si2'
_cell_volume   108.77
_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
  K  K1  1  0.0  0.0  0.17  1.0
  Cd  Cd0  1  0.0  0.98  0.43  1.0
  Si  Si2  1  0.0  0.98  0.16  1.0
  Si  Si3  1  0.0  0.0  0.64  1.0

data_KCdSi2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.8
_cell_length_b   5.96
_cell_length_c   5.96
_cell_angle_alpha   60.06
_cell_angle_beta   71.42
_cell_angle_gamma   71.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KCdSi2
_chemical_formula_sum   'K1 Cd1 Si2'
_cell_volume   108.77
_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
  K  K0  1  0.0  0.0  0.17  1.0
  Cd  Cd1  1  0.98  0.0  0.45  1.0
  Si  Si2  1  0.0  -0.0  0.64  1.0
  Si  Si3  1  0.98  0.0  0.17  1.0

K Cd Si Si
K Cd Si Si 0 2 o - o 1 3 o + o 
KCdSi2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one KCdSi2 cluster. K(1) is bonded in a single-bond geometry to one Cd(1) and one Si(1) atom. The K(1)-Cd(1) bond length is 1.66 Å. The K(1)-Si(1) bond length is 0.06 Å. Cd(1) is bonded in a 3-coordinate geometry to one K(1), one Si(1), and one Si(2) atom. The Cd(1)-Si(1) bond length is 1.65 Å. The Cd(1)-Si(2) bond length is 1.14 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a single-bond geometry to one K(1) and one Cd(1) atom. In the second Si site, Si(2) is bonded in a single-bond geometry to one Cd(1) atom.