The compound described by Nb5Te4 is Titanium telluride structured and crystallizes in the tetragonal I4/m space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to eight equivalent Nb(2) and four equivalent Te(1) atoms to form distorted NbNb8Te4 cuboctahedra that share corners with four equivalent Nb(2)Nb2Te5 square pyramids, edges with eight equivalent Nb(2)Nb2Te5 square pyramids, and faces with two equivalent Nb(1)Nb8Te4 cuboctahedra. In the second Nb site, Nb(2) is bonded to two equivalent Nb(1) and five equivalent Te(1) atoms to form distorted NbNb2Te5 square pyramids that share  a cornercorner with one Nb(1)Nb8Te4 cuboctahedra, corners with six equivalent Nb(2)Nb2Te5 square pyramids, edges with two equivalent Nb(1)Nb8Te4 cuboctahedra, edges with seven equivalent Nb(2)Nb2Te5 square pyramids, and faces with four equivalent Nb(2)Nb2Te5 square pyramids. Te(1) is bonded in a 6-coordinate geometry to one Nb(1) and five equivalent Nb(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nb5Te4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.703
_cell_length_b   7.593
_cell_length_c   7.593
_cell_angle_alpha   86.592
_cell_angle_beta   75.888
_cell_angle_gamma   75.888
_symmetry_Int_Tables_number   1
_cell_volume   200.760
_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
  Nb  Nb0  1  0.000  0.000  0.000  1.0
  Nb  Nb1  1  0.312  0.070  0.307  1.0
  Nb  Nb2  1  0.619  0.693  0.070  1.0
  Nb  Nb3  1  0.381  0.307  0.930  1.0
  Nb  Nb4  1  0.688  0.930  0.693  1.0
  Te  Te5  1  0.062  0.223  0.654  1.0
  Te  Te6  1  0.716  0.346  0.223  1.0
  Te  Te7  1  0.284  0.654  0.777  1.0
  Te  Te8  1  0.938  0.777  0.346  1.0
[/CIF]
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The compound described by Nb5Te4 is Titanium telluride structured and crystallizes in the tetragonal I4/m space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to eight equivalent Nb(2) and four equivalent Te(1) atoms to form distorted NbNb8Te4 cuboctahedra that share corners with four equivalent Nb(2)Nb2Te5 square pyramids, edges with eight equivalent Nb(2)Nb2Te5 square pyramids, and faces with two equivalent Nb(1)Nb8Te4 cuboctahedra. In the second Nb site, Nb(2) is bonded to two equivalent Nb(1) and five equivalent Te(1) atoms to form distorted NbNb2Te5 square pyramids that share  a cornercorner with one Nb(1)Nb8Te4 cuboctahedra, corners with six equivalent Nb(2)Nb2Te5 square pyramids, edges with two equivalent Nb(1)Nb8Te4 cuboctahedra, edges with seven equivalent Nb(2)Nb2Te5 square pyramids, and faces with four equivalent Nb(2)Nb2Te5 square pyramids. Te(1) is bonded in a 6-coordinate geometry to one Nb(1) and five equivalent Nb(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nb5Te4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.703
_cell_length_b   7.593
_cell_length_c   7.593
_cell_angle_alpha   86.592
_cell_angle_beta   75.888
_cell_angle_gamma   75.888
_symmetry_Int_Tables_number   1
_cell_volume   200.760
_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
  Nb  Nb0  1  0.000  0.000  0.000  1.0
  Nb  Nb1  1  0.312  0.070  0.307  1.0
  Nb  Nb2  1  0.619  0.693  0.070  1.0
  Nb  Nb3  1  0.381  0.307  0.930  1.0
  Nb  Nb4  1  0.688  0.930  0.693  1.0
  Te  Te5  1  0.062  0.223  0.654  1.0
  Te  Te6  1  0.716  0.346  0.223  1.0
  Te  Te7  1  0.284  0.654  0.777  1.0
  Te  Te8  1  0.938  0.777  0.346  1.0
[/CIF]
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