data_MgTc2Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.32
_cell_length_b   3.32
_cell_length_c   6.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgTc2Sn
_chemical_formula_sum   'Mg1 Tc2 Sn1'
_cell_volume   67.83
_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  0.0  1.0
  Tc  Tc2  1  0.66  0.66  0.52  1.0
  Tc  Tc3  1  0.66  0.66  0.62  1.0
  Sn  Sn1  1  0.0  0.0  0.07  1.0

data_MgTc2Sn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.7
_cell_length_b   4.7
_cell_length_c   6.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgTc2Sn
_chemical_formula_sum   'Mg2 Tc4 Sn2'
_cell_volume   135.66
_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
  Mg  Mg0  2  0.0  0.0  0.0  1.0
  Tc  Tc1  2  0.16  0.5  0.52  1.0
  Tc  Tc2  2  0.16  0.5  0.62  1.0
  Sn  Sn3  2  0.0  0.0  0.07  1.0

Mg Tc Tc Sn
Mg Tc Tc Sn 0 3 o o o 1 2 o o o 
MgSn(Tc)2 is High Pressure Cadmuum Telluride structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two magnesium;tin molecules and two Tc clusters. In each Tc cluster, there are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a single-bond geometry to one Tc(2) atom. The Tc(1)-Tc(2) bond length is 0.63 Å. In the second Tc site, Tc(2) is bonded in a distorted single-bond geometry to one Tc(1) atom.