data_SiTe3Mo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.1
_cell_length_b   5.1
_cell_length_c   5.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiTe3Mo
_chemical_formula_sum   'Si1 Te3 Mo1'
_cell_volume   132.73
_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
  Si  Si4  1  0.0  0.0  0.0  1.0
  Te  Te1  1  0.0  0.55  0.0  1.0
  Te  Te2  1  0.0  0.0  0.55  1.0
  Te  Te3  1  0.55  0.0  0.0  1.0
  Mo  Mo0  1  0.55  0.55  0.55  1.0

data_SiTe3Mo
_symmetry_space_group_name_H-M   R3m
_cell_length_a   7.21
_cell_length_b   7.21
_cell_length_c   8.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SiTe3Mo
_chemical_formula_sum   'Si3 Te9 Mo3'
_cell_volume   398.2
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Si  Si0  3  0.0  0.0  0.0  1.0
  Te  Te1  9  0.03  0.52  0.52  1.0
  Mo  Mo2  3  0.0  0.0  0.55  1.0

Si Te Te Te Mo
MoSiTe3 is (Cubic) Perovskite structured and crystallizes in the trigonal R3m space group. Mo(1) is bonded in a 9-coordinate geometry to nine equivalent Te(1) atoms. There are three shorter (3.24 Å) and six longer (3.63 Å) Mo(1)-Te(1) bond lengths. Si(1) is bonded to six equivalent Te(1) atoms to form corner-sharing SiTe6 octahedra. The corner-sharing octahedra are not tilted. There are three shorter (2.29 Å) and three longer (2.81 Å) Si(1)-Te(1) bond lengths. Te(1) is bonded in a 2-coordinate geometry to three equivalent Mo(1) and two equivalent Si(1) atoms.