data_MgTcAu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.85
_cell_length_b   4.76
_cell_length_c   4.97
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgTcAu2
_chemical_formula_sum   'Mg1 Tc1 Au2'
_cell_volume   67.45
_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
  Mg  Mg2  1  0.0  0.0  0.77  1.0
  Tc  Tc3  1  0.0  0.38  0.91  1.0
  Au  Au0  1  0.42  0.0  0.35  1.0
  Au  Au1  1  0.42  0.38  0.43  1.0

data_MgTcAu2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.85
_cell_length_b   4.76
_cell_length_c   4.97
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgTcAu2
_chemical_formula_sum   'Mg1 Tc1 Au2'
_cell_volume   67.45
_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
  Mg  Mg0  1  0.0  0.0  0.77  1.0
  Tc  Tc1  1  0.0  0.38  0.91  1.0
  Au  Au2  1  0.42  0.0  0.35  1.0
  Au  Au3  1  0.42  0.38  0.43  1.0

Mg Tc Au Au
MgTcAu2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 2-coordinate geometry to one Tc(1), two equivalent Au(1), and two equivalent Au(2) atoms. The Mg(1)-Tc(1) bond length is 1.96 Å. There is one shorter (2.43 Å) and one longer (2.67 Å) Mg(1)-Au(1) bond length. There is one shorter (2.76 Å) and one longer (2.98 Å) Mg(1)-Au(2) bond length. Tc(1) is bonded in a distorted single-bond geometry to one Mg(1) and four equivalent Au(2) atoms. There are a spread of Tc(1)-Au(2) bond distances ranging from 2.70-3.04 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 3-coordinate geometry to two equivalent Mg(1) and two equivalent Au(2) atoms. There is one shorter (1.87 Å) and one longer (2.97 Å) Au(1)-Au(2) bond length. In the second Au site, Au(2) is bonded in a 10-coordinate geometry to two equivalent Mg(1), four equivalent Tc(1), two equivalent Au(1), and two equivalent Au(2) atoms. Both Au(2)-Au(2) bond lengths are 2.85 Å.