data_BeTlTc2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.99
_cell_length_b   2.99
_cell_length_c   6.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeTlTc2
_chemical_formula_sum   'Be1 Tl1 Tc2'
_cell_volume   61.63
_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
  Tl  Tl3  1  0.0  0.0  0.45  1.0
  Tc  Tc1  1  0.49  0.49  0.19  1.0
  Tc  Tc2  1  0.49  0.49  0.71  1.0

data_BeTlTc2
_symmetry_space_group_name_H-M   P4mm
_cell_length_a   2.99
_cell_length_b   2.99
_cell_length_c   6.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   99
_chemical_formula_structural   BeTlTc2
_chemical_formula_sum   'Be1 Tl1 Tc2'
_cell_volume   61.63
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x, z'
  3  '-x, -y, z'
  4  'y, -x, z'
  5  '-x, y, z'
  6  'y, x, z'
  7  'x, -y, z'
  8  '-y, -x, 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
  Tl  Tl1  1  0.0  0.0  0.45  1.0
  Tc  Tc2  1  0.5  0.5  0.19  1.0
  Tc  Tc3  1  0.5  0.5  0.71  1.0

Be Tl Tc Tc
BeTc2Tl crystallizes in the monoclinic Cm space group. Be(1) is bonded in a distorted body-centered cubic geometry to four equivalent Tc(1) and four equivalent Tc(2) atoms. There are a spread of Be(1)-Tc(1) bond distances ranging from 2.45-2.49 Å. There are a spread of Be(1)-Tc(2) bond distances ranging from 2.87-2.91 Å. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a distorted body-centered cubic geometry to four equivalent Be(1) and four equivalent Tl(1) atoms. There are a spread of Tc(1)-Tl(1) bond distances ranging from 2.77-2.81 Å. In the second Tc site, Tc(2) is bonded in a 8-coordinate geometry to four equivalent Be(1) and four equivalent Tl(1) atoms. There are a spread of Tc(2)-Tl(1) bond distances ranging from 2.77-2.81 Å. Tl(1) is bonded in a distorted body-centered cubic geometry to four equivalent Tc(1) and four equivalent Tc(2) atoms.