data_MnSeCl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.42
_cell_length_b   4.42
_cell_length_c   4.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MnSeCl2
_chemical_formula_sum   'Mn1 Se1 Cl2'
_cell_volume   82.11
_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  0.0  0.0  1.0
  Se  Se3  1  0.21  0.21  0.0  1.0
  Cl  Cl0  1  0.21  0.0  0.1  1.0
  Cl  Cl1  1  0.0  0.21  0.1  1.0

data_MnSeCl2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.26
_cell_length_b   6.26
_cell_length_c   4.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MnSeCl2
_chemical_formula_sum   'Mn2 Se2 Cl4'
_cell_volume   164.21
_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
  Mn  Mn0  2  0.0  0.0  0.0  1.0
  Se  Se1  2  0.21  0.0  -0.0  1.0
  Cl  Cl2  4  0.11  0.11  0.1  1.0

Mn Se Cl Cl
MnSeCl2 is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two MnSeCl2 clusters. Mn(1) is bonded in a distorted L-shaped geometry to two equivalent Cl(1) atoms. Both Mn(1)-Cl(1) bond lengths are 1.02 Å. Se(1) is bonded in a distorted L-shaped geometry to two equivalent Cl(1) atoms. Both Se(1)-Cl(1) bond lengths are 1.02 Å. Cl(1) is bonded in a distorted L-shaped geometry to one Mn(1) and one Se(1) atom.