data_MnZnGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.03
_cell_length_b   4.03
_cell_length_c   4.03
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MnZnGe
_chemical_formula_sum   'Mn1 Zn1 Ge1'
_cell_volume   46.24
_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  0.0  0.0  0.0  1.0
  Zn  Zn2  1  0.85  0.85  0.85  1.0
  Ge  Ge0  1  0.42  0.42  0.42  1.0

data_MnZnGe
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.03
_cell_length_b   4.03
_cell_length_c   9.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   MnZnGe
_chemical_formula_sum   'Mn3 Zn3 Ge3'
_cell_volume   138.73
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.0  1.0
  Zn  Zn1  3  0.0  0.0  0.15  1.0
  Ge  Ge2  3  0.0  0.0  0.58  1.0

Mn Zn Ge
MnZnGe crystallizes in the trigonal R3m space group. Mn(1) is bonded to one Zn(1) and three equivalent Ge(1) atoms to form distorted MnZnGe3 tetrahedra that share corners with three equivalent Zn(1)MnGe3 tetrahedra, corners with six equivalent Mn(1)ZnGe3 tetrahedra, and edges with three equivalent Zn(1)MnGe3 tetrahedra. The Mn(1)-Zn(1) bond length is 1.49 Å. All Mn(1)-Ge(1) bond lengths are 2.49 Å. Zn(1) is bonded to one Mn(1) and three equivalent Ge(1) atoms to form distorted ZnMnGe3 tetrahedra that share corners with three equivalent Mn(1)ZnGe3 tetrahedra, corners with six equivalent Zn(1)MnGe3 tetrahedra, and edges with three equivalent Mn(1)ZnGe3 tetrahedra. All Zn(1)-Ge(1) bond lengths are 2.49 Å. Ge(1) is bonded in a 6-coordinate geometry to three equivalent Mn(1) and three equivalent Zn(1) atoms.