data_CaTcAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.92
_cell_length_b   4.92
_cell_length_c   4.92
_cell_angle_alpha   121.64
_cell_angle_beta   121.64
_cell_angle_gamma   87.18
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaTcAg2
_chemical_formula_sum   'Ca1 Tc1 Ag2'
_cell_volume   81.79
_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
  Ca  Ca2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.0  0.0  0.56  1.0
  Ag  Ag0  1  0.0  0.4  0.78  1.0
  Ag  Ag1  1  0.4  0.0  0.78  1.0

data_CaTcAg2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.78
_cell_length_b   6.78
_cell_length_c   4.92
_cell_angle_alpha   90.0
_cell_angle_beta   133.59
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CaTcAg2
_chemical_formula_sum   'Ca2 Tc2 Ag4'
_cell_volume   163.57
_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
  Ca  Ca0  2  0.0  0.0  0.0  1.0
  Tc  Tc1  2  0.0  0.0  0.56  1.0
  Ag  Ag2  4  0.3  0.3  0.38  1.0

Ca Tc Ag Ag
CaTcAg2 crystallizes in the monoclinic Cm space group. Ca(1) is bonded in a 6-coordinate geometry to two equivalent Tc(1) and four equivalent Ag(1) atoms. There is one shorter (2.16 Å) and one longer (2.75 Å) Ca(1)-Tc(1) bond length. There are two shorter (2.57 Å) and two longer (2.68 Å) Ca(1)-Ag(1) bond lengths. Tc(1) is bonded in a distorted see-saw-like geometry to two equivalent Ca(1) and two equivalent Ag(1) atoms. Both Tc(1)-Ag(1) bond lengths are 1.66 Å. Ag(1) is bonded in a 2-coordinate geometry to two equivalent Ca(1) and one Tc(1) atom.