data_Li4SiTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.7
_cell_length_b   4.7
_cell_length_c   4.7
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li4SiTc
_chemical_formula_sum   'Li4 Si1 Tc1'
_cell_volume   73.6
_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
  Li  Li0  1  0.16  0.5  0.5  1.0
  Li  Li1  1  0.5  0.5  0.16  1.0
  Li  Li2  1  0.5  0.16  0.5  1.0
  Li  Li3  1  0.16  0.16  0.16  1.0
  Si  Si4  1  0.0  0.0  0.0  1.0
  Tc  Tc5  1  0.66  0.66  0.66  1.0

data_Li4SiTc
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.7
_cell_length_b   4.7
_cell_length_c   11.52
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Li4SiTc
_chemical_formula_sum   'Li12 Si3 Tc3'
_cell_volume   220.81
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Li  Li0  9  0.22  0.44  0.28  1.0
  Li  Li1  3  0.0  0.0  0.84  1.0
  Si  Si2  3  0.0  0.0  0.0  1.0
  Tc  Tc3  3  0.0  0.0  0.34  1.0

Li Li Li Li Si Tc
Li3TcSi(Li) is Graphite-like structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three silyllithium molecules and three Li3Tc clusters. In each Li3Tc cluster, Li(1) is bonded in a distorted single-bond geometry to one Tc(1) atom. The Li(1)-Tc(1) bond length is 1.89 Å. Tc(1) is bonded in a trigonal non-coplanar geometry to three equivalent Li(1) atoms.