data_KSi2Tc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.41
_cell_length_b   6.41
_cell_length_c   6.41
_cell_angle_alpha   154.8
_cell_angle_beta   118.97
_cell_angle_gamma   67.09
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KSi2Tc
_chemical_formula_sum   'K1 Si2 Tc1'
_cell_volume   97.36
_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
  K  K0  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.0  0.26  0.85  1.0
  Si  Si2  1  0.4  0.0  0.5  1.0
  Tc  Tc3  1  0.0  0.0  0.34  1.0

data_KSi2Tc
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.8
_cell_length_b   6.41
_cell_length_c   6.41
_cell_angle_alpha   61.03
_cell_angle_beta   77.4
_cell_angle_gamma   77.4
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KSi2Tc
_chemical_formula_sum   'K1 Si2 Tc1'
_cell_volume   97.36
_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
  K  K0  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.1  0.4  0.5  1.0
  Tc  Tc2  1  0.34  0.0  0.66  1.0
  Si  Si3  1  0.85  -0.0  0.41  1.0

K Si Si Tc
KTcSi2 crystallizes in the triclinic P1 space group. K(1) is bonded in a 2-coordinate geometry to one Tc(1), one Si(1), and two equivalent Si(2) atoms. The K(1)-Tc(1) bond length is 2.21 Å. The K(1)-Si(1) bond length is 2.55 Å. There is one shorter (2.96 Å) and one longer (3.64 Å) K(1)-Si(2) bond length. Tc(1) is bonded in a 1-coordinate geometry to one K(1), one Si(1), and one Si(2) atom. The Tc(1)-Si(1) bond length is 1.89 Å. The Tc(1)-Si(2) bond length is 2.25 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 2-coordinate geometry to one K(1) and one Tc(1) atom. In the second Si site, Si(2) is bonded in a 5-coordinate geometry to two equivalent K(1), one Tc(1), and two equivalent Si(2) atoms. Both Si(2)-Si(2) bond lengths are 2.80 Å.