data_Zn3Tc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.91
_cell_length_b   4.91
_cell_length_c   4.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zn3Tc
_chemical_formula_sum   'Zn6 Tc2'
_cell_volume   118.32
_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
  Zn  Zn2  1  0.45  0.68  0.0  1.0
  Zn  Zn3  1  0.45  0.23  0.0  1.0
  Zn  Zn4  1  0.68  0.0  0.45  1.0
  Zn  Zn5  1  0.0  0.45  0.68  1.0
  Zn  Zn6  1  0.0  0.45  0.23  1.0
  Zn  Zn7  1  0.23  0.0  0.45  1.0
  Tc  Tc0  1  0.45  0.45  0.45  1.0
  Tc  Tc1  1  0.0  0.0  0.0  1.0

data_Zn3Tc
_symmetry_space_group_name_H-M   R3
_cell_length_a   6.94
_cell_length_b   6.94
_cell_length_c   8.5
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   146
_chemical_formula_structural   Zn3Tc
_chemical_formula_sum   'Zn18 Tc6'
_cell_volume   354.96
_cell_formula_units_Z   6
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  'x+1/3, y+2/3, z+2/3'
  5  '-y+1/3, x-y+2/3, z+2/3'
  6  '-x+y+1/3, -x+2/3, z+2/3'
  7  'x+2/3, y+1/3, z+1/3'
  8  '-y+2/3, x-y+1/3, z+1/3'
  9  '-x+y+2/3, -x+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
  Zn  Zn0  9  0.08  0.38  0.38  1.0
  Zn  Zn1  9  0.11  0.67  0.89  1.0
  Tc  Tc2  3  0.0  0.0  0.0  1.0
  Tc  Tc3  3  0.0  0.0  0.45  1.0

Zn Zn Zn Zn Zn Zn Tc Tc
TcZn3 is beta Plutonium-derived structured and crystallizes in the trigonal R3 space group. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded to six equivalent Zn(1) and six equivalent Zn(2) atoms to form a mixture of distorted edge and face-sharing TcZn12 cuboctahedra. There are three shorter (2.50 Å) and three longer (2.90 Å) Tc(1)-Zn(1) bond lengths. There are three shorter (2.50 Å) and three longer (2.90 Å) Tc(1)-Zn(2) bond lengths. In the second Tc site, Tc(2) is bonded to six equivalent Zn(1) and six equivalent Zn(2) atoms to form a mixture of distorted edge and face-sharing TcZn12 cuboctahedra. There are three shorter (2.72 Å) and three longer (3.10 Å) Tc(2)-Zn(1) bond lengths. There are three shorter (2.50 Å) and three longer (2.90 Å) Tc(2)-Zn(2) bond lengths. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 11-coordinate geometry to two equivalent Tc(1), two equivalent Tc(2), two equivalent Zn(1), and five equivalent Zn(2) atoms. Both Zn(1)-Zn(1) bond lengths are 2.94 Å. There are a spread of Zn(1)-Zn(2) bond distances ranging from 2.23-3.11 Å. In the second Zn site, Zn(2) is bonded in a 3-coordinate geometry to two equivalent Tc(1), two equivalent Tc(2), and five equivalent Zn(1) atoms.