data_Al2TcPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.26
_cell_length_b   9.26
_cell_length_c   9.26
_cell_angle_alpha   19.52
_cell_angle_beta   19.52
_cell_angle_gamma   19.52
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2TcPb
_chemical_formula_sum   'Al2 Tc1 Pb1'
_cell_volume   77.56
_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
  Al  Al0  1  0.0  0.0  0.26  1.0
  Al  Al1  1  0.0  0.0  0.98  1.0
  Tc  Tc3  1  0.0  0.0  0.0  1.0
  Pb  Pb2  1  0.0  0.0  0.62  1.0

data_Al2TcPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.44
_cell_length_b   3.14
_cell_length_c   9.26
_cell_angle_alpha   90.0
_cell_angle_beta   101.29
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Al2TcPb
_chemical_formula_sum   'Al4 Tc2 Pb2'
_cell_volume   155.13
_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
  Al  Al0  2  0.0  0.0  0.02  1.0
  Al  Al1  2  0.0  0.0  0.74  1.0
  Tc  Tc2  2  0.0  0.0  0.0  1.0
  Pb  Pb3  2  0.0  0.0  0.38  1.0

Al Al Tc Pb
TcAl2Pb crystallizes in the monoclinic Cm space group. Tc(1) is bonded in a single-bond geometry to one Al(1) and one Al(2) atom. The Tc(1)-Al(1) bond length is 2.44 Å. The Tc(1)-Al(2) bond length is 0.15 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted single-bond geometry to one Tc(1) and one Pb(1) atom. The Al(1)-Pb(1) bond length is 3.34 Å. In the second Al site, Al(2) is bonded in a single-bond geometry to one Tc(1) and one Pb(1) atom. The Al(2)-Pb(1) bond length is 3.34 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one Al(1); one Al(2); and six Pb(1,1) atoms to form a mixture of distorted edge and corner-sharing PbAl2Pb6 hexagonal bipyramids. All Pb(1)-Pb(1,1) bond lengths are 3.14 Å. In the second Pb site, Pb(1) is bonded to one Al(1); one Al(2); and six Pb(1,1) atoms to form a mixture of distorted edge and corner-sharing PbAl2Pb6 hexagonal bipyramids. The Pb(1)-Al(1) bond length is 3.34 Å. The Pb(1)-Al(2) bond length is 3.34 Å. Both Pb(1)-Pb(1) bond lengths are 3.14 Å.