data_YBeTl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.62
_cell_length_b   3.62
_cell_length_c   7.43
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   105.01
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YBeTl2
_chemical_formula_sum   'Y1 Be1 Tl2'
_cell_volume   94.18
_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
  Y  Y3  1  0.0  0.0  0.71  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Tl  Tl1  1  0.21  0.0  0.52  1.0
  Tl  Tl2  1  0.21  0.0  0.9  1.0

data_YBeTl2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.62
_cell_length_b   3.62
_cell_length_c   7.43
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   105.01
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YBeTl2
_chemical_formula_sum   'Y1 Be1 Tl2'
_cell_volume   94.18
_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
  Y  Y0  1  0.0  0.0  0.71  1.0
  Be  Be1  1  0.0  0.0  0.0  1.0
  Tl  Tl2  1  0.21  0.0  0.52  1.0
  Tl  Tl3  1  0.21  0.0  0.9  1.0

Y Be Tl Tl
Y Be Tl Tl 0 2 o o o 0 3 o o o 1 3 o o - 
BeYTl2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one BeYTl2 cluster. Be(1) is bonded in a single-bond geometry to one Tl(2) atom. The Be(1)-Tl(2) bond length is 1.03 Å. Y(1) is bonded in a bent 120 degrees geometry to one Tl(1) and one Tl(2) atom. The Y(1)-Tl(1) bond length is 1.59 Å. The Y(1)-Tl(2) bond length is 1.59 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a single-bond geometry to one Y(1) atom. In the second Tl site, Tl(2) is bonded in a water-like geometry to one Be(1) and one Y(1) atom.