The compound described by Nb2Sb crystallizes in the monoclinic Cm space group. There are fourteen inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 10-coordinate geometry to one Nb(2), one Nb(4), two equivalent Nb(1), three equivalent Sb(1), and three equivalent Sb(2) atoms. In the second Nb site, Nb(2) is bonded in a 4-coordinate geometry to one Nb(1), three equivalent Nb(3), one Sb(3), and three equivalent Sb(2) atoms. In the third Nb site, Nb(3) is bonded in a 11-coordinate geometry to one Nb(8), two equivalent Nb(3), three equivalent Nb(2), two equivalent Sb(2), and three equivalent Sb(3) atoms. In the fourth Nb site, Nb(4) is bonded in a 3-coordinate geometry to one Nb(1), three equivalent Nb(12), and three equivalent Sb(1) atoms. In the fifth Nb site, Nb(5) is bonded in a 11-coordinate geometry to one Nb(10), two equivalent Nb(5), three equivalent Nb(8), two equivalent Sb(3), and three equivalent Sb(4) atoms. In the sixth Nb site, Nb(6) is bonded in a 11-coordinate geometry to one Nb(7), two equivalent Nb(6), three equivalent Nb(10), two equivalent Sb(4), and three equivalent Sb(5) atoms. In the seventh Nb site, Nb(7) is bonded in a 4-coordinate geometry to one Nb(6), three equivalent Nb(9), one Sb(6), and three equivalent Sb(5) atoms. In the eighth Nb site, Nb(8) is bonded in a 4-coordinate geometry to one Nb(3), three equivalent Nb(5), one Sb(4), and three equivalent Sb(3) atoms. In the ninth Nb site, Nb(9) is bonded in a 11-coordinate geometry to one Nb(13), two equivalent Nb(9), three equivalent Nb(7), two equivalent Sb(5), and three equivalent Sb(6) atoms. In the tenth Nb site, Nb(10) is bonded in a 4-coordinate geometry to one Nb(5), three equivalent Nb(6), one Sb(5), and three equivalent Sb(4) atoms. In the eleventh Nb site, Nb(11) is bonded in a 11-coordinate geometry to one Nb(14), two equivalent Nb(11), three equivalent Nb(13), two equivalent Sb(6), and three equivalent Sb(7) atoms. In the twelfth Nb site, Nb(12) is bonded in a 12-coordinate geometry to two equivalent Nb(12), three equivalent Nb(14), three equivalent Nb(4), two equivalent Sb(1), and two equivalent Sb(7) atoms. In the thirteenth Nb site, Nb(13) is bonded in a 4-coordinate geometry to one Nb(9), three equivalent Nb(11), one Sb(7), and three equivalent Sb(6) atoms. In the fourteenth Nb site, Nb(14) is bonded in a 3-coordinate geometry to one Nb(11), three equivalent Nb(12), and three equivalent Sb(7) atoms. There are seven inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to two equivalent Nb(12), three equivalent Nb(1), and three equivalent Nb(4) atoms. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to two equivalent Nb(3), three equivalent Nb(1), and three equivalent Nb(2) atoms. In the third Sb site, Sb(3) is bonded in a 9-coordinate geometry to one Nb(2), two equivalent Nb(5), three equivalent Nb(3), and three equivalent Nb(8) atoms. In the fourth Sb site, Sb(4) is bonded in a 9-coordinate geometry to one Nb(8), two equivalent Nb(6), three equivalent Nb(10), and three equivalent Nb(5) atoms. In the fifth Sb site, Sb(5) is bonded in a 9-coordinate geometry to one Nb(10), two equivalent Nb(9), three equivalent Nb(6), and three equivalent Nb(7) atoms. In the sixth Sb site, Sb(6) is bonded in a 9-coordinate geometry to one Nb(7), two equivalent Nb(11), three equivalent Nb(13), and three equivalent Nb(9) atoms. In the seventh Sb site, Sb(7) is bonded in a 9-coordinate geometry to one Nb(13), two equivalent Nb(12), three equivalent Nb(11), and three equivalent Nb(14) atoms. is represented by the CIF file [CIF]
data_Nb2Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.295
_cell_length_b   34.172
_cell_length_c   4.897
_cell_angle_alpha   59.311
_cell_angle_beta   109.716
_cell_angle_gamma   109.699
_symmetry_Int_Tables_number   1
_cell_volume   436.976
_cell_formula_units_Z   7
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  0.055  0.863  0.065  1.0
  Nb  Nb1  1  0.866  0.766  0.374  1.0
  Nb  Nb2  1  0.074  0.721  0.097  1.0
  Nb  Nb3  1  0.242  0.960  0.766  1.0
  Nb  Nb4  1  0.083  0.579  0.113  1.0
  Nb  Nb5  1  0.076  0.435  0.104  1.0
  Nb  Nb6  1  0.865  0.334  0.388  1.0
  Nb  Nb7  1  0.880  0.622  0.408  1.0
  Nb  Nb8  1  0.061  0.292  0.079  1.0
  Nb  Nb9  1  0.880  0.478  0.413  1.0
  Nb  Nb10  1  0.050  0.148  0.067  1.0
  Nb  Nb11  1  0.046  0.004  0.061  1.0
  Nb  Nb12  1  0.851  0.192  0.362  1.0
  Nb  Nb13  1  0.847  0.048  0.358  1.0
  Sb  Sb14  1  0.437  0.916  0.459  1.0
  Sb  Sb15  1  0.670  0.809  0.677  1.0
  Sb  Sb16  1  0.684  0.666  0.709  1.0
  Sb  Sb17  1  0.686  0.522  0.718  1.0
  Sb  Sb18  1  0.671  0.378  0.696  1.0
  Sb  Sb19  1  0.656  0.234  0.673  1.0
  Sb  Sb20  1  0.653  0.092  0.665  1.0
[/CIF]
.
The compound described by Nb2Sb crystallizes in the monoclinic Cm space group. There are fourteen inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 10-coordinate geometry to one Nb(2), one Nb(4), two equivalent Nb(1), three equivalent Sb(1), and three equivalent Sb(2) atoms. In the second Nb site, Nb(2) is bonded in a 4-coordinate geometry to one Nb(1), three equivalent Nb(3), one Sb(3), and three equivalent Sb(2) atoms. In the third Nb site, Nb(3) is bonded in a 11-coordinate geometry to one Nb(8), two equivalent Nb(3), three equivalent Nb(2), two equivalent Sb(2), and three equivalent Sb(3) atoms. In the fourth Nb site, Nb(4) is bonded in a 3-coordinate geometry to one Nb(1), three equivalent Nb(12), and three equivalent Sb(1) atoms. In the fifth Nb site, Nb(5) is bonded in a 11-coordinate geometry to one Nb(10), two equivalent Nb(5), three equivalent Nb(8), two equivalent Sb(3), and three equivalent Sb(4) atoms. In the sixth Nb site, Nb(6) is bonded in a 11-coordinate geometry to one Nb(7), two equivalent Nb(6), three equivalent Nb(10), two equivalent Sb(4), and three equivalent Sb(5) atoms. In the seventh Nb site, Nb(7) is bonded in a 4-coordinate geometry to one Nb(6), three equivalent Nb(9), one Sb(6), and three equivalent Sb(5) atoms. In the eighth Nb site, Nb(8) is bonded in a 4-coordinate geometry to one Nb(3), three equivalent Nb(5), one Sb(4), and three equivalent Sb(3) atoms. In the ninth Nb site, Nb(9) is bonded in a 11-coordinate geometry to one Nb(13), two equivalent Nb(9), three equivalent Nb(7), two equivalent Sb(5), and three equivalent Sb(6) atoms. In the tenth Nb site, Nb(10) is bonded in a 4-coordinate geometry to one Nb(5), three equivalent Nb(6), one Sb(5), and three equivalent Sb(4) atoms. In the eleventh Nb site, Nb(11) is bonded in a 11-coordinate geometry to one Nb(14), two equivalent Nb(11), three equivalent Nb(13), two equivalent Sb(6), and three equivalent Sb(7) atoms. In the twelfth Nb site, Nb(12) is bonded in a 12-coordinate geometry to two equivalent Nb(12), three equivalent Nb(14), three equivalent Nb(4), two equivalent Sb(1), and two equivalent Sb(7) atoms. In the thirteenth Nb site, Nb(13) is bonded in a 4-coordinate geometry to one Nb(9), three equivalent Nb(11), one Sb(7), and three equivalent Sb(6) atoms. In the fourteenth Nb site, Nb(14) is bonded in a 3-coordinate geometry to one Nb(11), three equivalent Nb(12), and three equivalent Sb(7) atoms. There are seven inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to two equivalent Nb(12), three equivalent Nb(1), and three equivalent Nb(4) atoms. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to two equivalent Nb(3), three equivalent Nb(1), and three equivalent Nb(2) atoms. In the third Sb site, Sb(3) is bonded in a 9-coordinate geometry to one Nb(2), two equivalent Nb(5), three equivalent Nb(3), and three equivalent Nb(8) atoms. In the fourth Sb site, Sb(4) is bonded in a 9-coordinate geometry to one Nb(8), two equivalent Nb(6), three equivalent Nb(10), and three equivalent Nb(5) atoms. In the fifth Sb site, Sb(5) is bonded in a 9-coordinate geometry to one Nb(10), two equivalent Nb(9), three equivalent Nb(6), and three equivalent Nb(7) atoms. In the sixth Sb site, Sb(6) is bonded in a 9-coordinate geometry to one Nb(7), two equivalent Nb(11), three equivalent Nb(13), and three equivalent Nb(9) atoms. In the seventh Sb site, Sb(7) is bonded in a 9-coordinate geometry to one Nb(13), two equivalent Nb(12), three equivalent Nb(11), and three equivalent Nb(14) atoms. is represented by the CIF file [CIF]
data_Nb2Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.295
_cell_length_b   34.172
_cell_length_c   4.897
_cell_angle_alpha   59.311
_cell_angle_beta   109.716
_cell_angle_gamma   109.699
_symmetry_Int_Tables_number   1
_cell_volume   436.976
_cell_formula_units_Z   7
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  0.055  0.863  0.065  1.0
  Nb  Nb1  1  0.866  0.766  0.374  1.0
  Nb  Nb2  1  0.074  0.721  0.097  1.0
  Nb  Nb3  1  0.242  0.960  0.766  1.0
  Nb  Nb4  1  0.083  0.579  0.113  1.0
  Nb  Nb5  1  0.076  0.435  0.104  1.0
  Nb  Nb6  1  0.865  0.334  0.388  1.0
  Nb  Nb7  1  0.880  0.622  0.408  1.0
  Nb  Nb8  1  0.061  0.292  0.079  1.0
  Nb  Nb9  1  0.880  0.478  0.413  1.0
  Nb  Nb10  1  0.050  0.148  0.067  1.0
  Nb  Nb11  1  0.046  0.004  0.061  1.0
  Nb  Nb12  1  0.851  0.192  0.362  1.0
  Nb  Nb13  1  0.847  0.048  0.358  1.0
  Sb  Sb14  1  0.437  0.916  0.459  1.0
  Sb  Sb15  1  0.670  0.809  0.677  1.0
  Sb  Sb16  1  0.684  0.666  0.709  1.0
  Sb  Sb17  1  0.686  0.522  0.718  1.0
  Sb  Sb18  1  0.671  0.378  0.696  1.0
  Sb  Sb19  1  0.656  0.234  0.673  1.0
  Sb  Sb20  1  0.653  0.092  0.665  1.0
[/CIF]
.