data_Tc2SnAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.92
_cell_length_b   4.92
_cell_length_c   4.92
_cell_angle_alpha   130.46
_cell_angle_beta   130.46
_cell_angle_gamma   72.67
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tc2SnAs
_chemical_formula_sum   'Tc2 Sn1 As1'
_cell_volume   67.34
_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
  Tc  Tc2  1  0.0  0.0  0.96  1.0
  Tc  Tc3  1  0.06  0.0  0.98  1.0
  Sn  Sn1  1  0.0  0.06  0.98  1.0
  As  As0  1  0.0  0.0  0.0  1.0

data_Tc2SnAs
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.12
_cell_length_b   4.12
_cell_length_c   4.92
_cell_angle_alpha   114.77
_cell_angle_beta   114.77
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tc2SnAs
_chemical_formula_sum   'Tc2 Sn1 As1'
_cell_volume   67.34
_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
  Tc  Tc0  1  0.96  0.96  0.96  1.0
  Tc  Tc1  1  0.98  0.92  0.92  1.0
  Sn  Sn2  1  0.92  0.98  0.92  1.0
  As  As3  1  0.0  0.0  0.0  1.0

Tc Tc Sn As
Tc2SnAs is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Tc2SnAs cluster. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a distorted trigonal non-coplanar geometry to one Tc(2), one Sn(1), and one As(1) atom. The Tc(1)-Tc(2) bond length is 0.25 Å. The Tc(1)-Sn(1) bond length is 0.25 Å. The Tc(1)-As(1) bond length is 0.18 Å. In the second Tc site, Tc(2) is bonded in a distorted single-bond geometry to one Tc(1) atom. Sn(1) is bonded in a single-bond geometry to one Tc(1) atom. As(1) is bonded in a single-bond geometry to one Tc(1) atom.