data_MgGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.87
_cell_length_b   3.87
_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   MgGe
_chemical_formula_sum   'Mg1 Ge1'
_cell_volume   44.69
_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  Mg1  1  0.0  0.0  0.0  1.0
  Ge  Ge0  1  0.94  0.94  0.0  1.0

data_MgGe
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   2.98
_cell_length_b   5.48
_cell_length_c   5.48
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   MgGe
_chemical_formula_sum   'Mg2 Ge2'
_cell_volume   89.38
_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
  Ge  Ge1  2  0.0  0.0  0.94  1.0

Mg Ge
Mg Ge 0 1 - - o 
MgGe is alpha carbon monoxide-like structured and crystallizes in the orthorhombic Amm2 space group. The structure is zero-dimensional and consists of two MgGe clusters. Mg(1) is bonded in a single-bond geometry to one Ge(1) atom. The Mg(1)-Ge(1) bond length is 0.35 Å. Ge(1) is bonded in a single-bond geometry to one Mg(1) atom.