data_MnCrHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.14
_cell_length_b   4.14
_cell_length_c   2.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MnCrHg
_chemical_formula_sum   'Mn1 Cr1 Hg1'
_cell_volume   42.92
_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  Mn2  1  0.0  0.39  0.27  1.0
  Cr  Cr0  1  0.0  0.0  0.55  1.0
  Hg  Hg1  1  0.07  0.19  0.97  1.0

data_MnCrHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.89
_cell_length_b   4.14
_cell_length_c   4.14
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MnCrHg
_chemical_formula_sum   'Mn1 Cr1 Hg1'
_cell_volume   42.92
_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  0.27  0.0  0.39  1.0
  Cr  Cr1  1  0.55  0.0  0.0  1.0
  Hg  Hg2  1  0.97  0.07  0.19  1.0

Mn Cr Hg
Mn Cr Hg 0 2 o o - 1 2 o o o 
CrMnHg crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one CrMnHg cluster. Cr(1) is bonded in a 1-coordinate geometry to one Hg(1) atom. The Cr(1)-Hg(1) bond length is 1.41 Å. Mn(1) is bonded in a distorted single-bond geometry to one Hg(1) atom. The Mn(1)-Hg(1) bond length is 1.30 Å. Hg(1) is bonded in a 2-coordinate geometry to one Cr(1) and one Mn(1) atom.