data_Mn2SiGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.32
_cell_length_b   4.32
_cell_length_c   2.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   102.01
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mn2SiGe
_chemical_formula_sum   'Mn2 Si1 Ge1'
_cell_volume   49.6
_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
  Mn  Mn1  1  0.36  0.32  0.36  1.0
  Mn  Mn2  1  0.36  0.68  0.36  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Ge  Ge0  1  0.72  0.0  0.0  1.0

data_Mn2SiGe
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.72
_cell_length_b   4.32
_cell_length_c   4.32
_cell_angle_alpha   102.01
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mn2SiGe
_chemical_formula_sum   'Mn2 Si1 Ge1'
_cell_volume   49.6
_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
  Mn  Mn0  1  0.36  0.36  0.32  1.0
  Mn  Mn1  1  0.36  0.36  0.68  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  Ge  Ge3  1  -0.0  0.72  0.0  1.0

Mn Mn Si Ge
Mn2GeSi crystallizes in the triclinic P1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 4-coordinate geometry to one Mn(2), one Ge(1), and two equivalent Si(1) atoms. The Mn(1)-Mn(2) bond length is 1.54 Å. The Mn(1)-Ge(1) bond length is 2.49 Å. There is one shorter (2.10 Å) and one longer (2.54 Å) Mn(1)-Si(1) bond length. In the second Mn site, Mn(2) is bonded in a 4-coordinate geometry to one Mn(1), two equivalent Ge(1), and one Si(1) atom. There is one shorter (2.10 Å) and one longer (2.54 Å) Mn(2)-Ge(1) bond length. The Mn(2)-Si(1) bond length is 2.49 Å. Ge(1) is bonded in a 2-coordinate geometry to one Mn(1), two equivalent Mn(2), and one Si(1) atom. The Ge(1)-Si(1) bond length is 1.22 Å. Si(1) is bonded in a 2-coordinate geometry to one Mn(2), two equivalent Mn(1), and one Ge(1) atom.