data_Ta2ZnTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.87
_cell_length_b   8.87
_cell_length_c   8.87
_cell_angle_alpha   19.52
_cell_angle_beta   19.52
_cell_angle_gamma   19.52
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2ZnTc
_chemical_formula_sum   'Ta2 Zn1 Tc1'
_cell_volume   68.16
_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
  Ta  Ta0  1  0.0  0.0  0.67  1.0
  Ta  Ta1  1  0.0  0.0  0.43  1.0
  Zn  Zn3  1  0.0  0.0  0.0  1.0
  Tc  Tc2  1  0.0  0.0  0.05  1.0

data_Ta2ZnTc
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.21
_cell_length_b   3.01
_cell_length_c   8.87
_cell_angle_alpha   90.0
_cell_angle_beta   101.29
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ta2ZnTc
_chemical_formula_sum   'Ta4 Zn2 Tc2'
_cell_volume   136.31
_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
  Ta  Ta0  2  0.0  0.0  0.33  1.0
  Ta  Ta1  2  0.0  0.0  0.57  1.0
  Zn  Zn2  2  0.0  0.0  0.0  1.0
  Tc  Tc3  2  -0.0  0.0  0.95  1.0

Ta Ta Zn Tc
Ta Ta Zn Tc 0 1 o o o 2 3 o o o 
Ta2TcZn crystallizes in the monoclinic Cm space group. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a distorted linear geometry to one Ta(2) and one Zn(1) atom. The Ta(1)-Ta(2) bond length is 2.10 Å. The Ta(1)-Zn(1) bond length is 2.95 Å. In the second Ta site, Ta(2) is bonded in a 8-coordinate geometry to one Ta(1), six equivalent Ta(2), and one Tc(1) atom. All Ta(2)-Ta(2) bond lengths are 3.01 Å. The Ta(2)-Tc(1) bond length is 3.39 Å. Tc(1) is bonded in a single-bond geometry to one Ta(2) and one Zn(1) atom. The Tc(1)-Zn(1) bond length is 0.43 Å. Zn(1) is bonded in a single-bond geometry to one Ta(1) and one Tc(1) atom.