data_NaCo2Tc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.58
_cell_length_b   2.58
_cell_length_c   8.67
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.98
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCo2Tc
_chemical_formula_sum   'Na1 Co2 Tc1'
_cell_volume   57.63
_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
  Na  Na2  1  0.0  0.0  0.45  1.0
  Co  Co0  1  0.0  0.0  0.53  1.0
  Co  Co1  1  0.79  0.0  0.94  1.0
  Tc  Tc3  1  0.79  0.0  0.75  1.0

data_NaCo2Tc
_symmetry_space_group_name_H-M   Pm
_cell_length_a   2.58
_cell_length_b   2.58
_cell_length_c   8.67
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   NaCo2Tc
_chemical_formula_sum   'Na1 Co2 Tc1'
_cell_volume   57.67
_cell_formula_units_Z   1
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
  Na  Na0  1  0.0  0.0  0.45  1.0
  Co  Co1  1  0.0  0.0  0.53  1.0
  Co  Co2  1  0.79  0.0  0.94  1.0
  Tc  Tc3  1  0.79  0.0  0.75  1.0

Na Co Co Tc
NaTcCo2 crystallizes in the monoclinic Pm space group. The structure is zero-dimensional and consists of one NaTcCo2 cluster. Na(1) is bonded in a single-bond geometry to one Co(1) atom. The Na(1)-Co(1) bond length is 0.71 Å. Tc(1) is bonded in a 2-coordinate geometry to one Co(1) and one Co(2) atom. The Tc(1)-Co(1) bond length is 1.93 Å. The Tc(1)-Co(2) bond length is 1.64 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a single-bond geometry to one Na(1) and one Tc(1) atom. In the second Co site, Co(2) is bonded in a single-bond geometry to one Tc(1) atom.