The crystal structure described by Tc3Pt is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded to eight Tc(1,1) and four equivalent Pt(1) atoms to form distorted TcTc8Pt4 cuboctahedra that share corners with four equivalent Pt(1)Tc12 cuboctahedra; corners with fourteen Tc(1,1)Tc8Pt4 cuboctahedra; edges with six equivalent Pt(1)Tc12 cuboctahedra; edges with twelve Tc(1,1)Tc8Pt4 cuboctahedra; faces with four equivalent Pt(1)Tc12 cuboctahedra; and faces with sixteen Tc(1,1)Tc8Pt4 cuboctahedra. In the second Tc site, Tc(1) is bonded to eight Tc(1,1) and four equivalent Pt(1) atoms to form distorted TcTc8Pt4 cuboctahedra that share corners with four equivalent Pt(1)Tc12 cuboctahedra; corners with fourteen Tc(1,1)Tc8Pt4 cuboctahedra; edges with six equivalent Pt(1)Tc12 cuboctahedra; edges with twelve Tc(1,1)Tc8Pt4 cuboctahedra; faces with four equivalent Pt(1)Tc12 cuboctahedra; and faces with sixteen Tc(1,1)Tc8Pt4 cuboctahedra. Pt(1) is bonded to twelve Tc(1,1) atoms to form PtTc12 cuboctahedra that share corners with six equivalent Pt(1)Tc12 cuboctahedra; corners with twelve Tc(1,1)Tc8Pt4 cuboctahedra; edges with eighteen Tc(1,1)Tc8Pt4 cuboctahedra; faces with eight equivalent Pt(1)Tc12 cuboctahedra; and faces with twelve Tc(1,1)Tc8Pt4 cuboctahedra. is represented by the CIF file [CIF]
data_Tc3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.514
_cell_length_b   5.514
_cell_length_c   4.372
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   115.120
_cell_formula_units_Z   2
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
  Tc  Tc0  1  0.157  0.315  0.250  1.0
  Tc  Tc1  1  0.685  0.842  0.250  1.0
  Tc  Tc2  1  0.158  0.842  0.250  1.0
  Tc  Tc3  1  0.842  0.685  0.750  1.0
  Tc  Tc4  1  0.315  0.158  0.750  1.0
  Tc  Tc5  1  0.842  0.157  0.750  1.0
  Pt  Pt6  1  0.333  0.667  0.750  1.0
  Pt  Pt7  1  0.667  0.333  0.250  1.0
[/CIF]
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The crystal structure described by Tc3Pt is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded to eight Tc(1,1) and four equivalent Pt(1) atoms to form distorted TcTc8Pt4 cuboctahedra that share corners with four equivalent Pt(1)Tc12 cuboctahedra; corners with fourteen Tc(1,1)Tc8Pt4 cuboctahedra; edges with six equivalent Pt(1)Tc12 cuboctahedra; edges with twelve Tc(1,1)Tc8Pt4 cuboctahedra; faces with four equivalent Pt(1)Tc12 cuboctahedra; and faces with sixteen Tc(1,1)Tc8Pt4 cuboctahedra. In the second Tc site, Tc(1) is bonded to eight Tc(1,1) and four equivalent Pt(1) atoms to form distorted TcTc8Pt4 cuboctahedra that share corners with four equivalent Pt(1)Tc12 cuboctahedra; corners with fourteen Tc(1,1)Tc8Pt4 cuboctahedra; edges with six equivalent Pt(1)Tc12 cuboctahedra; edges with twelve Tc(1,1)Tc8Pt4 cuboctahedra; faces with four equivalent Pt(1)Tc12 cuboctahedra; and faces with sixteen Tc(1,1)Tc8Pt4 cuboctahedra. Pt(1) is bonded to twelve Tc(1,1) atoms to form PtTc12 cuboctahedra that share corners with six equivalent Pt(1)Tc12 cuboctahedra; corners with twelve Tc(1,1)Tc8Pt4 cuboctahedra; edges with eighteen Tc(1,1)Tc8Pt4 cuboctahedra; faces with eight equivalent Pt(1)Tc12 cuboctahedra; and faces with twelve Tc(1,1)Tc8Pt4 cuboctahedra. is represented by the CIF file [CIF]
data_Tc3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.514
_cell_length_b   5.514
_cell_length_c   4.372
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   115.120
_cell_formula_units_Z   2
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
  Tc  Tc0  1  0.157  0.315  0.250  1.0
  Tc  Tc1  1  0.685  0.842  0.250  1.0
  Tc  Tc2  1  0.158  0.842  0.250  1.0
  Tc  Tc3  1  0.842  0.685  0.750  1.0
  Tc  Tc4  1  0.315  0.158  0.750  1.0
  Tc  Tc5  1  0.842  0.157  0.750  1.0
  Pt  Pt6  1  0.333  0.667  0.750  1.0
  Pt  Pt7  1  0.667  0.333  0.250  1.0
[/CIF]
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