data_SrTa2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.52
_cell_length_b   3.52
_cell_length_c   7.31
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrTa2Ge
_chemical_formula_sum   'Sr1 Ta2 Ge1'
_cell_volume   90.83
_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
  Sr  Sr1  1  0.0  0.0  0.66  1.0
  Ta  Ta2  1  0.76  0.76  0.09  1.0
  Ta  Ta3  1  0.76  0.76  0.23  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0

data_SrTa2Ge
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.98
_cell_length_b   4.98
_cell_length_c   7.31
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrTa2Ge
_chemical_formula_sum   'Sr2 Ta4 Ge2'
_cell_volume   181.67
_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
  Sr  Sr0  2  0.0  0.0  0.66  1.0
  Ta  Ta1  2  0.26  0.5  0.09  1.0
  Ta  Ta2  2  0.26  0.5  0.23  1.0
  Ge  Ge3  2  0.0  0.0  0.0  1.0

Sr Ta Ta Ge
Sr Ta Ta Ge 0 3 o o + 1 2 o o o 1 3 + + o 
SrTa2Ge crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrTa2Ge clusters. Sr(1) is bonded in a distorted single-bond geometry to one Ge(1) atom. The Sr(1)-Ge(1) bond length is 2.52 Å. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 2-coordinate geometry to one Ta(2) and one Ge(1) atom. The Ta(1)-Ta(2) bond length is 1.02 Å. The Ta(1)-Ge(1) bond length is 1.34 Å. In the second Ta site, Ta(2) is bonded in a distorted single-bond geometry to one Ta(1) atom. Ge(1) is bonded in a 1-coordinate geometry to one Sr(1) and one Ta(1) atom.