data_MgTiGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   2.98
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgTiGe2
_chemical_formula_sum   'Mg1 Ti1 Ge2'
_cell_volume   70.08
_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  Mg2  1  0.0  0.0  0.0  1.0
  Ti  Ti3  1  0.43  0.43  0.0  1.0
  Ge  Ge0  1  0.43  0.0  0.49  1.0
  Ge  Ge1  1  0.0  0.43  0.49  1.0

data_MgTiGe2
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   2.98
_cell_length_b   6.86
_cell_length_c   6.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   MgTiGe2
_chemical_formula_sum   'Mg2 Ti2 Ge4'
_cell_volume   140.16
_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, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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  0.0  0.0  0.0  1.0
  Ti  Ti1  2  0.0  0.0  0.43  1.0
  Ge  Ge2  4  0.5  0.21  0.21  1.0

Mg Ti Ge Ge
MgTiGe2 crystallizes in the monoclinic Cm space group. Mg(1) is bonded in a 4-coordinate geometry to eight equivalent Ge(1) atoms. There are a spread of Mg(1)-Ge(1) bond distances ranging from 2.53-3.17 Å. Ti(1) is bonded in a 4-coordinate geometry to eight equivalent Ge(1) atoms. There are a spread of Ti(1)-Ge(1) bond distances ranging from 2.53-3.17 Å. Ge(1) is bonded in a 8-coordinate geometry to four equivalent Mg(1) and four equivalent Ti(1) atoms.