data_MgCdSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.67
_cell_length_b   5.67
_cell_length_c   5.67
_cell_angle_alpha   144.76
_cell_angle_beta   144.76
_cell_angle_gamma   50.69
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgCdSi
_chemical_formula_sum   'Mg1 Cd1 Si1'
_cell_volume   60.39
_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
  Mg  Mg1  1  0.0  0.0  0.29  1.0
  Cd  Cd0  1  0.0  0.0  0.08  1.0
  Si  Si2  1  0.0  0.0  0.88  1.0

data_MgCdSi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   5.67
_cell_angle_alpha   90.0
_cell_angle_beta   115.34
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgCdSi
_chemical_formula_sum   'Mg2 Cd2 Si2'
_cell_volume   120.78
_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
  Mg  Mg0  2  0.29  0.0  0.29  1.0
  Cd  Cd1  2  0.08  0.0  0.08  1.0
  Si  Si2  2  0.38  0.5  0.88  1.0

Mg Cd Si
MgCdSi is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two MgCdSi clusters. Mg(1) is bonded in a single-bond geometry to one Cd(1) atom. The Mg(1)-Cd(1) bond length is 1.22 Å. Cd(1) is bonded in a linear geometry to one Mg(1) and one Si(1) atom. The Cd(1)-Si(1) bond length is 1.12 Å. Si(1) is bonded in a single-bond geometry to one Cd(1) atom.