data_AlTePt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.1
_cell_length_b   3.1
_cell_length_c   7.43
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlTePt2
_chemical_formula_sum   'Al1 Te1 Pt2'
_cell_volume   71.38
_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
  Al  Al0  1  0.0  0.0  0.0  1.0
  Te  Te3  1  0.0  0.0  0.71  1.0
  Pt  Pt1  1  0.55  0.55  0.44  1.0
  Pt  Pt2  1  0.55  0.55  0.98  1.0

data_AlTePt2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.38
_cell_length_b   4.38
_cell_length_c   7.43
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlTePt2
_chemical_formula_sum   'Al2 Te2 Pt4'
_cell_volume   142.75
_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
  Al  Al0  2  0.0  0.0  0.0  1.0
  Te  Te1  2  0.0  0.0  0.71  1.0
  Pt  Pt2  2  0.05  0.5  0.44  1.0
  Pt  Pt3  2  0.05  0.5  0.98  1.0

Al Te Pt Pt
Pt2AlTe crystallizes in the monoclinic Cm space group. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to one Pt(2), four equivalent Pt(1), and four equivalent Te(1) atoms. The Pt(1)-Pt(2) bond length is 3.40 Å. All Pt(1)-Pt(1) bond lengths are 3.10 Å. There are a spread of Pt(1)-Te(1) bond distances ranging from 2.82-3.14 Å. In the second Pt site, Pt(2) is bonded in a distorted square co-planar geometry to one Pt(1) and four equivalent Al(1) atoms. There are a spread of Pt(2)-Al(1) bond distances ranging from 1.98-2.42 Å. Al(1) is bonded to four equivalent Pt(2) and one Te(1) atom to form a mixture of corner and edge-sharing AlTePt4 square pyramids. The Al(1)-Te(1) bond length is 2.13 Å. Te(1) is bonded in a distorted single-bond geometry to four equivalent Pt(1) and one Al(1) atom.