data_Sr2TiGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.7
_cell_length_b   3.7
_cell_length_c   9.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2TiGe
_chemical_formula_sum   'Sr2 Ti1 Ge1'
_cell_volume   124.25
_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  0.45  1.0
  Sr  Sr2  1  0.85  0.85  0.86  1.0
  Ti  Ti3  1  0.0  0.0  0.36  1.0
  Ge  Ge0  1  0.85  0.85  0.08  1.0

data_Sr2TiGe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   9.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr2TiGe
_chemical_formula_sum   'Sr4 Ti2 Ge2'
_cell_volume   248.51
_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  0.45  1.0
  Sr  Sr1  2  0.35  0.5  0.86  1.0
  Ti  Ti2  2  0.0  0.0  0.36  1.0
  Ge  Ge3  2  0.35  0.5  0.08  1.0

Sr Sr Ti Ge
Sr Sr Ti Ge 0 2 o o o 1 3 o o + 
Sr2TiGe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Sr2TiGe clusters. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a single-bond geometry to one Ti(1) atom. The Sr(1)-Ti(1) bond length is 0.80 Å. In the second Sr site, Sr(2) is bonded in a single-bond geometry to one Ge(1) atom. The Sr(2)-Ge(1) bond length is 1.96 Å. Ti(1) is bonded in a single-bond geometry to one Sr(1) and one Ge(1) atom. The Ti(1)-Ge(1) bond length is 2.71 Å. Ge(1) is bonded in a distorted linear geometry to one Sr(2) and one Ti(1) atom.