data_SrCr2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.37
_cell_length_b   3.37
_cell_length_c   6.71
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCr2Ge
_chemical_formula_sum   'Sr1 Cr2 Ge1'
_cell_volume   76.16
_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  Sr3  1  0.0  0.0  0.36  1.0
  Cr  Cr0  1  0.68  0.68  0.71  1.0
  Cr  Cr1  1  0.68  0.68  0.0  1.0
  Ge  Ge2  1  0.0  0.0  0.0  1.0

data_SrCr2Ge
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   6.71
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrCr2Ge
_chemical_formula_sum   'Sr2 Cr4 Ge2'
_cell_volume   152.32
_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  0.36  1.0
  Cr  Cr1  2  0.18  0.5  0.0  1.0
  Cr  Cr2  2  0.18  0.5  0.71  1.0
  Ge  Ge3  2  0.0  0.0  0.0  1.0

Sr Cr Cr Ge
Sr Cr Cr Ge 0 2 - - o 0 1 - - o 0 3 o o o 1 2 o o + 2 3 + + o 
SrCr2Ge crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 2-coordinate geometry to three equivalent Cr(1) and one Ge(1) atom. There is one shorter (2.81 Å) and two longer (3.48 Å) Sr(1)-Cr(1) bond lengths. The Sr(1)-Ge(1) bond length is 2.40 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one Cr(2), and one Ge(1) atom. The Cr(1)-Cr(2) bond length is 1.96 Å. The Cr(1)-Ge(1) bond length is 2.46 Å. In the second Cr site, Cr(2) is bonded in a distorted single-bond geometry to one Cr(1) and one Ge(1) atom. The Cr(2)-Ge(1) bond length is 1.51 Å. Ge(1) is bonded in a 1-coordinate geometry to one Sr(1), one Cr(1), and one Cr(2) atom.