The structure described by Nb5Ge3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form distorted corner-sharing NbGe6 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the second Nb site, Nb(2) is bonded in a 5-coordinate geometry to two equivalent Ge(1) and three equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Nb(1) and eight equivalent Nb(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Nb(1), six equivalent Nb(2), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Nb5Ge3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.735
_cell_length_b   6.735
_cell_length_c   7.679
_cell_angle_alpha   116.007
_cell_angle_beta   116.007
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   273.247
_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
  Nb  Nb0  1  0.500  0.500  0.000  1.0
  Nb  Nb1  1  0.000  0.000  0.000  1.0
  Nb  Nb2  1  0.989  0.816  0.304  1.0
  Nb  Nb3  1  0.316  0.489  0.304  1.0
  Nb  Nb4  1  0.816  0.316  0.304  1.0
  Nb  Nb5  1  0.489  0.989  0.304  1.0
  Nb  Nb6  1  0.011  0.184  0.696  1.0
  Nb  Nb7  1  0.684  0.511  0.696  1.0
  Nb  Nb8  1  0.184  0.684  0.696  1.0
  Nb  Nb9  1  0.511  0.011  0.696  1.0
  Ge  Ge10  1  0.750  0.750  0.500  1.0
  Ge  Ge11  1  0.250  0.250  0.500  1.0
  Ge  Ge12  1  0.635  0.865  0.000  1.0
  Ge  Ge13  1  0.365  0.135  0.000  1.0
  Ge  Ge14  1  0.865  0.365  0.000  1.0
  Ge  Ge15  1  0.135  0.635  0.000  1.0
[/CIF]
.
The structure described by Nb5Ge3 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form distorted corner-sharing NbGe6 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the second Nb site, Nb(2) is bonded in a 5-coordinate geometry to two equivalent Ge(1) and three equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Nb(1) and eight equivalent Nb(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Nb(1), six equivalent Nb(2), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Nb5Ge3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.735
_cell_length_b   6.735
_cell_length_c   7.679
_cell_angle_alpha   116.007
_cell_angle_beta   116.007
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   273.247
_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
  Nb  Nb0  1  0.500  0.500  0.000  1.0
  Nb  Nb1  1  0.000  0.000  0.000  1.0
  Nb  Nb2  1  0.989  0.816  0.304  1.0
  Nb  Nb3  1  0.316  0.489  0.304  1.0
  Nb  Nb4  1  0.816  0.316  0.304  1.0
  Nb  Nb5  1  0.489  0.989  0.304  1.0
  Nb  Nb6  1  0.011  0.184  0.696  1.0
  Nb  Nb7  1  0.684  0.511  0.696  1.0
  Nb  Nb8  1  0.184  0.684  0.696  1.0
  Nb  Nb9  1  0.511  0.011  0.696  1.0
  Ge  Ge10  1  0.750  0.750  0.500  1.0
  Ge  Ge11  1  0.250  0.250  0.500  1.0
  Ge  Ge12  1  0.635  0.865  0.000  1.0
  Ge  Ge13  1  0.365  0.135  0.000  1.0
  Ge  Ge14  1  0.865  0.365  0.000  1.0
  Ge  Ge15  1  0.135  0.635  0.000  1.0
[/CIF]
.