data_SrTc2Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   4.85
_cell_angle_alpha   120.88
_cell_angle_beta   120.88
_cell_angle_gamma   88.48
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrTc2Hg
_chemical_formula_sum   'Sr1 Tc2 Hg1'
_cell_volume   79.46
_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
  Sr  Sr1  1  0.0  0.0  0.0  1.0
  Tc  Tc2  1  0.39  0.0  0.74  1.0
  Tc  Tc3  1  0.0  0.0  0.47  1.0
  Hg  Hg0  1  0.0  0.39  0.74  1.0

data_SrTc2Hg
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.78
_cell_length_b   4.78
_cell_length_c   4.85
_cell_angle_alpha   119.56
_cell_angle_beta   119.56
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrTc2Hg
_chemical_formula_sum   'Sr1 Tc2 Hg1'
_cell_volume   79.46
_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
  Sr  Sr0  1  0.0  0.0  0.0  1.0
  Tc  Tc1  1  0.26  0.0  0.65  1.0
  Tc  Tc2  1  0.53  0.0  0.53  1.0
  Hg  Hg3  1  0.65  0.39  0.65  1.0

Sr Tc Tc Hg
SrTc2Hg crystallizes in the triclinic P1 space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent Tc(1), two equivalent Tc(2), and two equivalent Hg(1) atoms. There is one shorter (2.54 Å) and one longer (2.78 Å) Sr(1)-Tc(1) bond length. There is one shorter (2.29 Å) and one longer (2.55 Å) Sr(1)-Tc(2) bond length. There is one shorter (2.54 Å) and one longer (2.78 Å) Sr(1)-Hg(1) bond length. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Tc(2) atom. The Tc(1)-Tc(2) bond length is 1.66 Å. In the second Tc site, Tc(2) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Tc(1), and one Hg(1) atom. The Tc(2)-Hg(1) bond length is 1.66 Å. Hg(1) is bonded in a 2-coordinate geometry to two equivalent Sr(1) and one Tc(2) atom.