data_MnBeZn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.53
_cell_length_b   4.53
_cell_length_c   4.53
_cell_angle_alpha   131.88
_cell_angle_beta   131.88
_cell_angle_gamma   70.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MnBeZn2
_chemical_formula_sum   'Mn1 Be1 Zn2'
_cell_volume   50.55
_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  Mn1  1  0.0  0.0  0.7  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Zn  Zn2  1  0.0  0.85  0.85  1.0
  Zn  Zn3  1  0.85  0.0  0.85  1.0

data_MnBeZn2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   4.53
_cell_angle_alpha   90.0
_cell_angle_beta   125.21
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MnBeZn2
_chemical_formula_sum   'Mn2 Be2 Zn4'
_cell_volume   101.11
_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  0.7  1.0
  Be  Be1  2  0.0  0.0  0.0  1.0
  Zn  Zn2  4  0.08  0.08  0.0  1.0

Mn Be Zn Zn
Mn Be Zn Zn 0 3 - o o 0 2 o - o 0 1 o o + 1 3 - o - 1 2 o - - 
BeMnZn2 is alpha Niobium phosphide-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeMnZn2 clusters. Be(1) is bonded in an L-shaped geometry to two equivalent Zn(1) atoms. Both Be(1)-Zn(1) bond lengths are 0.56 Å. Mn(1) is bonded in a 2-coordinate geometry to two equivalent Zn(1) atoms. Both Mn(1)-Zn(1) bond lengths are 1.25 Å. Zn(1) is bonded in a distorted single-bond geometry to one Be(1) and one Mn(1) atom.