The crystal structure described by Ni7In3 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the triclinic P-1 space group. There are fifteen inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 13-coordinate geometry to one Ni(10), one Ni(11), one Ni(13), one Ni(14), one Ni(15), one Ni(2), one Ni(5), one Ni(6), one Ni(8), one In(2), one In(3), one In(4), and one In(5) atom. In the second Ni site, Ni(2) is bonded in a distorted q6 geometry to one Ni(1), one Ni(11), one Ni(13), one Ni(14), one Ni(15), one Ni(7), one Ni(8), one Ni(9), one In(1), one In(2), one In(5), and one In(6) atom. In the third Ni site, Ni(3) is bonded in a 11-coordinate geometry to one Ni(6), one Ni(8), two equivalent Ni(10), two equivalent Ni(12), one In(6), two equivalent In(2), and two equivalent In(4) atoms. In the fourth Ni site, Ni(4) is bonded in a 11-coordinate geometry to one Ni(10), one Ni(12), one Ni(15), one Ni(6), two equivalent Ni(5), one In(1), one In(4), one In(6), and two equivalent In(3) atoms. In the fifth Ni site, Ni(5) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(11), one Ni(13), one Ni(15), one Ni(6), one Ni(7), two equivalent Ni(4), one In(1), one In(4), one In(5), and two equivalent In(3) atoms. In the sixth Ni site, Ni(6) is bonded to one Ni(1), one Ni(10), one Ni(11), one Ni(13), one Ni(3), one Ni(4), one Ni(5), one In(2), one In(4), one In(6), and two equivalent In(3) atoms to form distorted NiIn5Ni7 cuboctahedra that share corners with two equivalent Ni(9)In4Ni8 cuboctahedra,  an edgeedge with one Ni(6)In5Ni7 cuboctahedra, and  a faceface with one Ni(14)In4Ni8 cuboctahedra. In the seventh Ni site, Ni(7) is bonded in a 13-coordinate geometry to one Ni(11), one Ni(12), one Ni(13), one Ni(2), one Ni(5), one Ni(8), one Ni(9), two equivalent Ni(15), one In(5), one In(6), and two equivalent In(1) atoms. In the eighth Ni site, Ni(8) is bonded in a 12-coordinate geometry to one Ni(1), one Ni(12), one Ni(13), one Ni(14), one Ni(2), one Ni(3), one Ni(7), one In(2), one In(4), one In(6), and two equivalent In(5) atoms. In the ninth Ni site, Ni(9) is bonded to two equivalent Ni(11), two equivalent Ni(15), two equivalent Ni(2), two equivalent Ni(7), two equivalent In(1), and two equivalent In(6) atoms to form NiIn4Ni8 cuboctahedra that share corners with two equivalent Ni(14)In4Ni8 cuboctahedra and corners with four equivalent Ni(6)In5Ni7 cuboctahedra. In the tenth Ni site, Ni(10) is bonded in a 12-coordinate geometry to one Ni(1), one Ni(12), one Ni(4), one Ni(6), two equivalent Ni(3), one In(1), one In(3), one In(4), one In(6), and two equivalent In(2) atoms. In the eleventh Ni site, Ni(11) is bonded in a distorted q6 geometry to one Ni(1), one Ni(13), one Ni(15), one Ni(2), one Ni(5), one Ni(6), one Ni(7), one Ni(9), one In(1), one In(6), and two equivalent In(3) atoms. In the twelfth Ni site, Ni(12) is bonded in a 12-coordinate geometry to one Ni(10), one Ni(4), one Ni(7), one Ni(8), two equivalent Ni(3), one In(1), one In(2), one In(5), one In(6), and two equivalent In(4) atoms. In the thirteenth Ni site, Ni(13) is bonded in a distorted q6 geometry to one Ni(1), one Ni(11), one Ni(14), one Ni(2), one Ni(5), one Ni(6), one Ni(7), one Ni(8), one In(2), one In(4), and two equivalent In(5) atoms. In the fourteenth Ni site, Ni(14) is bonded to two equivalent Ni(1), two equivalent Ni(13), two equivalent Ni(2), two equivalent Ni(8), two equivalent In(2), and two equivalent In(5) atoms to form NiIn4Ni8 cuboctahedra that share corners with two equivalent Ni(9)In4Ni8 cuboctahedra and faces with two equivalent Ni(6)In5Ni7 cuboctahedra. In the fifteenth Ni site, Ni(15) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(11), one Ni(2), one Ni(4), one Ni(5), one Ni(9), two equivalent Ni(7), one In(3), one In(5), one In(6), and two equivalent In(1) atoms. There are six inequivalent In sites. In the first In site, In(1) is bonded in a 11-coordinate geometry to one Ni(10), one Ni(11), one Ni(12), one Ni(2), one Ni(4), one Ni(5), one Ni(9), two equivalent Ni(15), and two equivalent Ni(7) atoms. In the second In site, In(2) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(12), one Ni(13), one Ni(14), one Ni(2), one Ni(6), one Ni(8), two equivalent Ni(10), and two equivalent Ni(3) atoms. In the third In site, In(3) is bonded in a 12-coordinate geometry to one Ni(1), one Ni(10), one Ni(15), two equivalent Ni(11), two equivalent Ni(4), two equivalent Ni(5), two equivalent Ni(6), and one In(3) atom. In the fourth In site, In(4) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(10), one Ni(13), one Ni(4), one Ni(5), one Ni(6), one Ni(8), two equivalent Ni(12), and two equivalent Ni(3) atoms. In the fifth In site, In(5) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(12), one Ni(14), one Ni(15), one Ni(2), one Ni(5), one Ni(7), two equivalent Ni(13), and two equivalent Ni(8) atoms. In the sixth In site, In(6) is bonded in a 11-coordinate geometry to one Ni(10), one Ni(11), one Ni(12), one Ni(15), one Ni(2), one Ni(3), one Ni(4), one Ni(6), one Ni(7), one Ni(8), and one Ni(9) atom. is represented by the CIF file [CIF]
data_In3Ni7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.547
_cell_length_b   8.942
_cell_length_c   9.811
_cell_angle_alpha   106.833
_cell_angle_beta   96.980
_cell_angle_gamma   90.288
_symmetry_Int_Tables_number   1
_cell_volume   545.186
_cell_formula_units_Z   4
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
  In  In0  1  0.324  0.837  0.396  1.0
  In  In1  1  0.676  0.163  0.604  1.0
  In  In2  1  0.065  0.712  0.015  1.0
  In  In3  1  0.935  0.288  0.985  1.0
  In  In4  1  0.790  0.529  0.554  1.0
  In  In5  1  0.210  0.471  0.446  1.0
  In  In6  1  0.473  0.365  0.124  1.0
  In  In7  1  0.527  0.635  0.876  1.0
  In  In8  1  0.620  0.997  0.866  1.0
  In  In9  1  0.380  0.003  0.134  1.0
  In  In10  1  0.847  0.733  0.314  1.0
  In  In11  1  0.153  0.267  0.686  1.0
  Ni  Ni12  1  0.860  0.764  0.784  1.0
  Ni  Ni13  1  0.140  0.236  0.216  1.0
  Ni  Ni14  1  0.028  0.983  0.250  1.0
  Ni  Ni15  1  0.972  0.017  0.750  1.0
  Ni  Ni16  1  0.758  0.542  0.062  1.0
  Ni  Ni17  1  0.242  0.458  0.938  1.0
  Ni  Ni18  1  0.524  0.586  0.364  1.0
  Ni  Ni19  1  0.476  0.414  0.636  1.0
  Ni  Ni20  1  0.444  0.711  0.636  1.0
  Ni  Ni21  1  0.556  0.289  0.364  1.0
  Ni  Ni22  1  0.846  0.423  0.274  1.0
  Ni  Ni23  1  0.154  0.577  0.726  1.0
  Ni  Ni24  1  0.669  0.002  0.337  1.0
  Ni  Ni25  1  0.331  0.998  0.663  1.0
  Ni  Ni26  1  0.726  0.854  0.081  1.0
  Ni  Ni27  1  0.274  0.146  0.919  1.0
  Ni  Ni28  1  0.000  0.000  0.500  1.0
  Ni  Ni29  1  0.149  0.544  0.201  1.0
  Ni  Ni30  1  0.851  0.456  0.799  1.0
  Ni  Ni31  1  0.929  0.234  0.416  1.0
  Ni  Ni32  1  0.071  0.766  0.584  1.0
  Ni  Ni33  1  0.453  0.699  0.151  1.0
  Ni  Ni34  1  0.547  0.301  0.849  1.0
  Ni  Ni35  1  0.758  0.144  0.164  1.0
  Ni  Ni36  1  0.242  0.856  0.836  1.0
  Ni  Ni37  1  0.000  0.000  0.000  1.0
  Ni  Ni38  1  0.701  0.856  0.563  1.0
  Ni  Ni39  1  0.299  0.144  0.437  1.0
[/CIF]
.
The crystal structure described by Ni7In3 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the triclinic P-1 space group. There are fifteen inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 13-coordinate geometry to one Ni(10), one Ni(11), one Ni(13), one Ni(14), one Ni(15), one Ni(2), one Ni(5), one Ni(6), one Ni(8), one In(2), one In(3), one In(4), and one In(5) atom. In the second Ni site, Ni(2) is bonded in a distorted q6 geometry to one Ni(1), one Ni(11), one Ni(13), one Ni(14), one Ni(15), one Ni(7), one Ni(8), one Ni(9), one In(1), one In(2), one In(5), and one In(6) atom. In the third Ni site, Ni(3) is bonded in a 11-coordinate geometry to one Ni(6), one Ni(8), two equivalent Ni(10), two equivalent Ni(12), one In(6), two equivalent In(2), and two equivalent In(4) atoms. In the fourth Ni site, Ni(4) is bonded in a 11-coordinate geometry to one Ni(10), one Ni(12), one Ni(15), one Ni(6), two equivalent Ni(5), one In(1), one In(4), one In(6), and two equivalent In(3) atoms. In the fifth Ni site, Ni(5) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(11), one Ni(13), one Ni(15), one Ni(6), one Ni(7), two equivalent Ni(4), one In(1), one In(4), one In(5), and two equivalent In(3) atoms. In the sixth Ni site, Ni(6) is bonded to one Ni(1), one Ni(10), one Ni(11), one Ni(13), one Ni(3), one Ni(4), one Ni(5), one In(2), one In(4), one In(6), and two equivalent In(3) atoms to form distorted NiIn5Ni7 cuboctahedra that share corners with two equivalent Ni(9)In4Ni8 cuboctahedra,  an edgeedge with one Ni(6)In5Ni7 cuboctahedra, and  a faceface with one Ni(14)In4Ni8 cuboctahedra. In the seventh Ni site, Ni(7) is bonded in a 13-coordinate geometry to one Ni(11), one Ni(12), one Ni(13), one Ni(2), one Ni(5), one Ni(8), one Ni(9), two equivalent Ni(15), one In(5), one In(6), and two equivalent In(1) atoms. In the eighth Ni site, Ni(8) is bonded in a 12-coordinate geometry to one Ni(1), one Ni(12), one Ni(13), one Ni(14), one Ni(2), one Ni(3), one Ni(7), one In(2), one In(4), one In(6), and two equivalent In(5) atoms. In the ninth Ni site, Ni(9) is bonded to two equivalent Ni(11), two equivalent Ni(15), two equivalent Ni(2), two equivalent Ni(7), two equivalent In(1), and two equivalent In(6) atoms to form NiIn4Ni8 cuboctahedra that share corners with two equivalent Ni(14)In4Ni8 cuboctahedra and corners with four equivalent Ni(6)In5Ni7 cuboctahedra. In the tenth Ni site, Ni(10) is bonded in a 12-coordinate geometry to one Ni(1), one Ni(12), one Ni(4), one Ni(6), two equivalent Ni(3), one In(1), one In(3), one In(4), one In(6), and two equivalent In(2) atoms. In the eleventh Ni site, Ni(11) is bonded in a distorted q6 geometry to one Ni(1), one Ni(13), one Ni(15), one Ni(2), one Ni(5), one Ni(6), one Ni(7), one Ni(9), one In(1), one In(6), and two equivalent In(3) atoms. In the twelfth Ni site, Ni(12) is bonded in a 12-coordinate geometry to one Ni(10), one Ni(4), one Ni(7), one Ni(8), two equivalent Ni(3), one In(1), one In(2), one In(5), one In(6), and two equivalent In(4) atoms. In the thirteenth Ni site, Ni(13) is bonded in a distorted q6 geometry to one Ni(1), one Ni(11), one Ni(14), one Ni(2), one Ni(5), one Ni(6), one Ni(7), one Ni(8), one In(2), one In(4), and two equivalent In(5) atoms. In the fourteenth Ni site, Ni(14) is bonded to two equivalent Ni(1), two equivalent Ni(13), two equivalent Ni(2), two equivalent Ni(8), two equivalent In(2), and two equivalent In(5) atoms to form NiIn4Ni8 cuboctahedra that share corners with two equivalent Ni(9)In4Ni8 cuboctahedra and faces with two equivalent Ni(6)In5Ni7 cuboctahedra. In the fifteenth Ni site, Ni(15) is bonded in a 13-coordinate geometry to one Ni(1), one Ni(11), one Ni(2), one Ni(4), one Ni(5), one Ni(9), two equivalent Ni(7), one In(3), one In(5), one In(6), and two equivalent In(1) atoms. There are six inequivalent In sites. In the first In site, In(1) is bonded in a 11-coordinate geometry to one Ni(10), one Ni(11), one Ni(12), one Ni(2), one Ni(4), one Ni(5), one Ni(9), two equivalent Ni(15), and two equivalent Ni(7) atoms. In the second In site, In(2) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(12), one Ni(13), one Ni(14), one Ni(2), one Ni(6), one Ni(8), two equivalent Ni(10), and two equivalent Ni(3) atoms. In the third In site, In(3) is bonded in a 12-coordinate geometry to one Ni(1), one Ni(10), one Ni(15), two equivalent Ni(11), two equivalent Ni(4), two equivalent Ni(5), two equivalent Ni(6), and one In(3) atom. In the fourth In site, In(4) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(10), one Ni(13), one Ni(4), one Ni(5), one Ni(6), one Ni(8), two equivalent Ni(12), and two equivalent Ni(3) atoms. In the fifth In site, In(5) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(12), one Ni(14), one Ni(15), one Ni(2), one Ni(5), one Ni(7), two equivalent Ni(13), and two equivalent Ni(8) atoms. In the sixth In site, In(6) is bonded in a 11-coordinate geometry to one Ni(10), one Ni(11), one Ni(12), one Ni(15), one Ni(2), one Ni(3), one Ni(4), one Ni(6), one Ni(7), one Ni(8), and one Ni(9) atom. is represented by the CIF file [CIF]
data_In3Ni7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.547
_cell_length_b   8.942
_cell_length_c   9.811
_cell_angle_alpha   106.833
_cell_angle_beta   96.980
_cell_angle_gamma   90.288
_symmetry_Int_Tables_number   1
_cell_volume   545.186
_cell_formula_units_Z   4
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
  In  In0  1  0.324  0.837  0.396  1.0
  In  In1  1  0.676  0.163  0.604  1.0
  In  In2  1  0.065  0.712  0.015  1.0
  In  In3  1  0.935  0.288  0.985  1.0
  In  In4  1  0.790  0.529  0.554  1.0
  In  In5  1  0.210  0.471  0.446  1.0
  In  In6  1  0.473  0.365  0.124  1.0
  In  In7  1  0.527  0.635  0.876  1.0
  In  In8  1  0.620  0.997  0.866  1.0
  In  In9  1  0.380  0.003  0.134  1.0
  In  In10  1  0.847  0.733  0.314  1.0
  In  In11  1  0.153  0.267  0.686  1.0
  Ni  Ni12  1  0.860  0.764  0.784  1.0
  Ni  Ni13  1  0.140  0.236  0.216  1.0
  Ni  Ni14  1  0.028  0.983  0.250  1.0
  Ni  Ni15  1  0.972  0.017  0.750  1.0
  Ni  Ni16  1  0.758  0.542  0.062  1.0
  Ni  Ni17  1  0.242  0.458  0.938  1.0
  Ni  Ni18  1  0.524  0.586  0.364  1.0
  Ni  Ni19  1  0.476  0.414  0.636  1.0
  Ni  Ni20  1  0.444  0.711  0.636  1.0
  Ni  Ni21  1  0.556  0.289  0.364  1.0
  Ni  Ni22  1  0.846  0.423  0.274  1.0
  Ni  Ni23  1  0.154  0.577  0.726  1.0
  Ni  Ni24  1  0.669  0.002  0.337  1.0
  Ni  Ni25  1  0.331  0.998  0.663  1.0
  Ni  Ni26  1  0.726  0.854  0.081  1.0
  Ni  Ni27  1  0.274  0.146  0.919  1.0
  Ni  Ni28  1  0.000  0.000  0.500  1.0
  Ni  Ni29  1  0.149  0.544  0.201  1.0
  Ni  Ni30  1  0.851  0.456  0.799  1.0
  Ni  Ni31  1  0.929  0.234  0.416  1.0
  Ni  Ni32  1  0.071  0.766  0.584  1.0
  Ni  Ni33  1  0.453  0.699  0.151  1.0
  Ni  Ni34  1  0.547  0.301  0.849  1.0
  Ni  Ni35  1  0.758  0.144  0.164  1.0
  Ni  Ni36  1  0.242  0.856  0.836  1.0
  Ni  Ni37  1  0.000  0.000  0.000  1.0
  Ni  Ni38  1  0.701  0.856  0.563  1.0
  Ni  Ni39  1  0.299  0.144  0.437  1.0
[/CIF]
.