data_MgRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.34
_cell_length_b   9.34
_cell_length_c   9.34
_cell_angle_alpha   17.74
_cell_angle_beta   17.74
_cell_angle_gamma   17.74
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgRh
_chemical_formula_sum   'Mg2 Rh2'
_cell_volume   66.04
_cell_formula_units_Z   2
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  Mg0  1  0.0  0.0  0.2  1.0
  Mg  Mg1  1  0.0  0.0  0.37  1.0
  Rh  Rh2  1  0.0  0.0  0.3  1.0
  Rh  Rh3  1  0.0  0.0  0.27  1.0

data_MgRh
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   4.99
_cell_length_b   2.88
_cell_length_c   9.34
_cell_angle_alpha   90.0
_cell_angle_beta   100.26
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   MgRh
_chemical_formula_sum   'Mg4 Rh4'
_cell_volume   132.09
_cell_formula_units_Z   4
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+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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  4  0.0  0.0  0.42  1.0
  Rh  Rh1  4  0.0  0.0  0.48  1.0

Mg Mg Rh Rh
MgRh is Cyanogen Chloride-derived structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of two MgRh clusters. Mg(1) is bonded in a single-bond geometry to one Rh(1) atom. The Mg(1)-Rh(1) bond length is 0.61 Å. Rh(1) is bonded in a distorted linear geometry to one Mg(1) and one Rh(1) atom. The Rh(1)-Rh(1) bond length is 0.31 Å.