data_CaSnGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   4.36
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaSnGe2
_chemical_formula_sum   'Ca1 Sn1 Ge2'
_cell_volume   91.97
_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
  Ca  Ca0  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.3  0.3  0.0  1.0
  Ge  Ge1  1  0.0  0.3  0.18  1.0
  Ge  Ge2  1  0.3  0.0  0.18  1.0

data_CaSnGe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.49
_cell_length_b   6.49
_cell_length_c   4.36
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CaSnGe2
_chemical_formula_sum   'Ca2 Sn2 Ge4'
_cell_volume   183.94
_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
  Ca  Ca0  2  0.0  0.0  0.0  1.0
  Sn  Sn1  2  0.3  0.0  -0.0  1.0
  Ge  Ge2  4  0.15  0.15  0.18  1.0

Ca Sn Ge Ge
CaSnGe2 is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CaSnGe2 clusters. Ca(1) is bonded in a 2-coordinate geometry to one Sn(1) and two equivalent Ge(1) atoms. The Ca(1)-Sn(1) bond length is 1.92 Å. Both Ca(1)-Ge(1) bond lengths are 1.57 Å. Sn(1) is bonded in a 3-coordinate geometry to one Ca(1) and two equivalent Ge(1) atoms. Both Sn(1)-Ge(1) bond lengths are 1.57 Å. Ge(1) is bonded in a 1-coordinate geometry to one Ca(1) and one Sn(1) atom.