data_MgZnGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.27
_cell_length_b   4.27
_cell_length_c   4.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgZnGe2
_chemical_formula_sum   'Mg1 Zn1 Ge2'
_cell_volume   73.51
_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
  Zn  Zn3  1  0.14  0.14  0.0  1.0
  Ge  Ge0  1  0.14  0.0  0.01  1.0
  Ge  Ge1  1  0.0  0.14  0.01  1.0

data_MgZnGe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.04
_cell_length_b   6.04
_cell_length_c   4.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgZnGe2
_chemical_formula_sum   'Mg2 Zn2 Ge4'
_cell_volume   147.03
_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
  Mg  Mg0  2  0.0  0.0  0.0  1.0
  Zn  Zn1  2  0.14  0.0  0.0  1.0
  Ge  Ge2  4  0.07  0.07  0.01  1.0

Mg Zn Ge Ge
Mg Zn Ge Ge 0 3 o o o 0 2 o o o 1 3 o o o 1 2 o o o 
MgZnGe2 is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two MgZnGe2 clusters. Mg(1) is bonded in an L-shaped geometry to two equivalent Ge(1) atoms. Both Mg(1)-Ge(1) bond lengths are 0.58 Å. Zn(1) is bonded in an L-shaped geometry to two equivalent Ge(1) atoms. Both Zn(1)-Ge(1) bond lengths are 0.58 Å. Ge(1) is bonded in an L-shaped geometry to one Mg(1) and one Zn(1) atom.