data_NaCaTc2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.68
_cell_length_b   2.68
_cell_length_c   10.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCaTc2
_chemical_formula_sum   'Na1 Ca1 Tc2'
_cell_volume   73.77
_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  Na1  1  0.0  0.0  0.0  1.0
  Ca  Ca0  1  0.0  0.0  0.14  1.0
  Tc  Tc2  1  0.34  0.34  0.63  1.0
  Tc  Tc3  1  0.34  0.34  0.66  1.0

data_NaCaTc2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.79
_cell_length_b   3.79
_cell_length_c   10.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaCaTc2
_chemical_formula_sum   'Na2 Ca2 Tc4'
_cell_volume   147.54
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.0  1.0
  Ca  Ca1  2  0.0  0.0  0.14  1.0
  Tc  Tc2  2  0.34  0.0  0.63  1.0
  Tc  Tc3  2  0.34  0.0  0.66  1.0

Na Ca Tc Tc
NaCa(Tc)2 is Cubic alpha N2-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two technetium molecules and two NaCa clusters. In each NaCa cluster, Na(1) is bonded in a single-bond geometry to one Ca(1) atom. The Na(1)-Ca(1) bond length is 1.47 Å. Ca(1) is bonded in a single-bond geometry to one Na(1) atom.