data_BeTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.56
_cell_length_b   9.56
_cell_length_c   9.56
_cell_angle_alpha   155.35
_cell_angle_beta   155.35
_cell_angle_gamma   35.14
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeTe4
_chemical_formula_sum   'Be1 Te4'
_cell_volume   151.64
_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  0.0  1.0
  Te  Te1  1  0.04  0.0  0.56  1.0
  Te  Te2  1  0.0  0.04  0.56  1.0
  Te  Te3  1  0.0  0.0  0.48  1.0
  Te  Te4  1  0.0  0.0  0.74  1.0

data_BeTe4
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.77
_cell_length_b   5.77
_cell_length_c   9.56
_cell_angle_alpha   90.0
_cell_angle_beta   107.57
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BeTe4
_chemical_formula_sum   'Be2 Te8'
_cell_volume   303.28
_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  0.0  1.0
  Te  Te1  4  0.04  0.48  0.52  1.0
  Te  Te2  2  0.24  0.5  0.74  1.0
  Te  Te3  2  0.48  0.0  0.48  1.0

Be Te Te Te Te
Be Te Te Te Te 0 4 o o - 1 2 o o o 1 3 o o o 1 4 o o o 2 3 o o o 2 4 o o o 3 4 o o o 
BeTe(Te)3 is alpha carbon monoxide-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two beryllium telluride molecules and two Te clusters. In each Te cluster, there are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted single-bond geometry to one Te(1) and one Te(2) atom. The Te(1)-Te(1) bond length is 0.23 Å. The Te(1)-Te(2) bond length is 0.42 Å. In the second Te site, Te(2) is bonded in a 2-coordinate geometry to two equivalent Te(1) atoms.