data_NbTcSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.38
_cell_length_b   3.5
_cell_length_c   6.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NbTcSe2
_chemical_formula_sum   'Nb1 Tc1 Se2'
_cell_volume   79.86
_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  0.94  1.0
  Tc  Tc3  1  0.69  0.75  0.5  1.0
  Se  Se1  1  0.69  0.75  0.14  1.0
  Se  Se2  1  0.0  0.0  0.33  1.0

data_NbTcSe2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.38
_cell_length_b   3.5
_cell_length_c   6.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NbTcSe2
_chemical_formula_sum   'Nb1 Tc1 Se2'
_cell_volume   79.86
_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  0.94  1.0
  Tc  Tc1  1  0.69  0.75  0.5  1.0
  Se  Se2  1  0.0  0.0  0.33  1.0
  Se  Se3  1  0.69  0.75  0.14  1.0

Nb Tc Se Se
NbSeTcSe is High Pressure Cadmuum Telluride structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one selanylideneniobium molecule and one selanylidenetechnetium molecule.