data_NbTcSnPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   4.87
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NbTcSnPb
_chemical_formula_sum   'Nb1 Tc1 Sn1 Pb1'
_cell_volume   81.57
_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
  Nb  Nb0  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.72  0.72  0.72  1.0
  Sn  Sn2  1  0.44  0.44  0.44  1.0
  Pb  Pb1  1  0.16  0.16  0.16  1.0

data_NbTcSnPb
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   11.92
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   NbTcSnPb
_chemical_formula_sum   'Nb3 Tc3 Sn3 Pb3'
_cell_volume   244.7
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Nb  Nb0  3  0.0  0.0  0.0  1.0
  Tc  Tc1  3  0.0  0.0  0.28  1.0
  Sn  Sn2  3  0.0  0.0  0.56  1.0
  Pb  Pb3  3  0.0  0.0  0.84  1.0

Nb Tc Sn Pb
NbTcPbSn crystallizes in the trigonal R3m space group. Nb(1) is bonded in a single-bond geometry to four equivalent Tc(1), one Pb(1), and three equivalent Sn(1) atoms. There are three shorter (2.88 Å) and one longer (3.33 Å) Nb(1)-Tc(1) bond length. The Nb(1)-Pb(1) bond length is 1.95 Å. All Nb(1)-Sn(1) bond lengths are 3.10 Å. Tc(1) is bonded in a 11-coordinate geometry to four equivalent Nb(1), three equivalent Pb(1), and four equivalent Sn(1) atoms. All Tc(1)-Pb(1) bond lengths are 3.10 Å. There are three shorter (2.88 Å) and one longer (3.33 Å) Tc(1)-Sn(1) bond length. Pb(1) is bonded in a single-bond geometry to one Nb(1), three equivalent Tc(1), and four equivalent Sn(1) atoms. There are three shorter (2.88 Å) and one longer (3.33 Å) Pb(1)-Sn(1) bond length. Sn(1) is bonded in a 11-coordinate geometry to three equivalent Nb(1), four equivalent Tc(1), and four equivalent Pb(1) atoms.