data_FeTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.0
_cell_length_b   5.0
_cell_length_c   4.09
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   149.78
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeTc
_chemical_formula_sum   'Fe2 Tc2'
_cell_volume   51.43
_cell_formula_units_Z   2
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
  Fe  Fe0  1  0.3  0.83  0.07  1.0
  Fe  Fe1  1  0.3  0.17  0.02  1.0
  Tc  Tc2  1  0.3  0.27  0.07  1.0
  Tc  Tc3  1  0.3  0.73  0.02  1.0

data_FeTc
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.6
_cell_length_b   4.09
_cell_length_c   5.0
_cell_angle_alpha   90.0
_cell_angle_beta   105.11
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   FeTc
_chemical_formula_sum   'Fe2 Tc2'
_cell_volume   51.43
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Fe  Fe0  2  0.17  0.52  0.67  1.0
  Tc  Tc1  2  0.27  0.48  0.77  1.0

Fe Fe Tc Tc
Fe Fe Tc Tc 0 3 o o o 1 2 o o o 
FeTc crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two FeTc clusters. Tc(1) is bonded in a single-bond geometry to one Fe(1) atom. The Tc(1)-Fe(1) bond length is 0.55 Å. Fe(1) is bonded in a distorted single-bond geometry to one Tc(1) atom.