data_BeZn2Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.76
_cell_length_b   2.76
_cell_length_c   6.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeZn2Co
_chemical_formula_sum   'Be1 Zn2 Co1'
_cell_volume   46.73
_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
  Be  Be0  1  0.0  0.0  0.34  1.0
  Zn  Zn2  1  0.0  0.0  0.94  1.0
  Zn  Zn3  1  0.38  0.38  0.74  1.0
  Co  Co1  1  0.38  0.38  0.33  1.0

data_BeZn2Co
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.9
_cell_length_b   3.9
_cell_length_c   6.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BeZn2Co
_chemical_formula_sum   'Be2 Zn4 Co2'
_cell_volume   93.47
_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
  Be  Be0  2  0.0  0.0  0.34  1.0
  Zn  Zn1  2  0.0  0.0  0.94  1.0
  Zn  Zn2  2  0.38  0.0  0.74  1.0
  Co  Co3  2  0.38  0.0  0.33  1.0

Be Zn Zn Co
BeCoZn2 crystallizes in the monoclinic Cm space group. Be(1) is bonded in a 1-coordinate geometry to one Co(1) and one Zn(1) atom. The Be(1)-Co(1) bond length is 1.48 Å. The Be(1)-Zn(1) bond length is 2.43 Å. Co(1) is bonded in a 1-coordinate geometry to one Be(1) and one Zn(2) atom. The Co(1)-Zn(2) bond length is 2.52 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 2-coordinate geometry to one Be(1) and three equivalent Zn(2) atoms. There is one shorter (1.94 Å) and two longer (2.37 Å) Zn(1)-Zn(2) bond lengths. In the second Zn site, Zn(2) is bonded in a 4-coordinate geometry to one Co(1) and three equivalent Zn(1) atoms.