The crystal structure described by Re4Si7 crystallizes in the monoclinic Cm space group. There are eight inequivalent Re sites. In the first Re site, Re(1) is bonded in a 8-coordinate geometry to one Si(1), one Si(8), two equivalent Si(10), two equivalent Si(4), and two equivalent Si(5) atoms. In the second Re site, Re(2) is bonded in a 10-coordinate geometry to one Si(2), one Si(9), two equivalent Si(10), two equivalent Si(11), two equivalent Si(5), and two equivalent Si(6) atoms. In the third Re site, Re(3) is bonded in a 8-coordinate geometry to one Si(14), one Si(3), two equivalent Si(11), two equivalent Si(12), and two equivalent Si(6) atoms. In the fourth Re site, Re(4) is bonded in a 8-coordinate geometry to one Si(14), one Si(4), two equivalent Si(12), two equivalent Si(7), and two equivalent Si(8) atoms. In the fifth Re site, Re(5) is bonded in a 8-coordinate geometry to one Si(13), one Si(5), two equivalent Si(1), two equivalent Si(8), and two equivalent Si(9) atoms. In the sixth Re site, Re(6) is bonded in a 8-coordinate geometry to one Si(10), one Si(6), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(9) atoms. In the seventh Re site, Re(7) is bonded in a 8-coordinate geometry to one Si(11), one Si(7), two equivalent Si(14), two equivalent Si(2), and two equivalent Si(3) atoms. In the eighth Re site, Re(8) is bonded in a 8-coordinate geometry to one Si(12), one Si(7), two equivalent Si(13), two equivalent Si(3), and two equivalent Si(4) atoms. There are fourteen inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Re(1), two equivalent Re(5), two equivalent Re(6), one Si(9), two equivalent Si(10), and two equivalent Si(13) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Re(2), two equivalent Re(6), two equivalent Re(7), two equivalent Si(10), and two equivalent Si(11) atoms. In the third Si site, Si(3) is bonded in a distorted q6 geometry to one Re(3), two equivalent Re(7), two equivalent Re(8), two equivalent Si(11), and two equivalent Si(12) atoms. In the fourth Si site, Si(4) is bonded in a distorted q6 geometry to one Re(4), two equivalent Re(1), two equivalent Re(8), two equivalent Si(12), and two equivalent Si(8) atoms. In the fifth Si site, Si(5) is bonded in a distorted q6 geometry to one Re(5), two equivalent Re(1), two equivalent Re(2), one Si(10), two equivalent Si(8), and two equivalent Si(9) atoms. In the sixth Si site, Si(6) is bonded in a 10-coordinate geometry to one Re(6), two equivalent Re(2), two equivalent Re(3), one Si(11), two equivalent Si(14), and two equivalent Si(9) atoms. In the seventh Si site, Si(7) is bonded in a 8-coordinate geometry to one Re(7), one Re(8), two equivalent Re(4), two equivalent Si(13), and two equivalent Si(14) atoms. In the eighth Si site, Si(8) is bonded in a distorted q6 geometry to one Re(1), two equivalent Re(4), two equivalent Re(5), two equivalent Si(4), and two equivalent Si(5) atoms. In the ninth Si site, Si(9) is bonded in a distorted q6 geometry to one Re(2), two equivalent Re(5), two equivalent Re(6), one Si(1), two equivalent Si(5), and two equivalent Si(6) atoms. In the tenth Si site, Si(10) is bonded in a distorted q6 geometry to one Re(6), two equivalent Re(1), two equivalent Re(2), one Si(5), two equivalent Si(1), and two equivalent Si(2) atoms. In the eleventh Si site, Si(11) is bonded in a 10-coordinate geometry to one Re(7), two equivalent Re(2), two equivalent Re(3), one Si(6), two equivalent Si(2), and two equivalent Si(3) atoms. In the twelfth Si site, Si(12) is bonded in a distorted q6 geometry to one Re(8), two equivalent Re(3), two equivalent Re(4), two equivalent Si(3), and two equivalent Si(4) atoms. In the thirteenth Si site, Si(13) is bonded in a 5-coordinate geometry to one Re(5), two equivalent Re(8), two equivalent Si(1), and two equivalent Si(7) atoms. In the fourteenth Si site, Si(14) is bonded in a 8-coordinate geometry to one Re(3), one Re(4), two equivalent Re(7), two equivalent Si(6), and two equivalent Si(7) atoms. is represented by the CIF file [CIF]
data_Re4Si7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.159
_cell_length_b   8.344
_cell_length_c   11.756
_cell_angle_alpha   92.828
_cell_angle_beta   97.721
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   306.670
_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
  Re  Re0  1  0.149  0.589  0.298  1.0
  Re  Re1  1  0.274  0.480  0.549  1.0
  Re  Re2  1  0.398  0.367  0.797  1.0
  Re  Re3  1  0.523  0.224  0.046  1.0
  Re  Re4  1  0.652  0.110  0.305  1.0
  Re  Re5  1  0.769  0.970  0.537  1.0
  Re  Re6  1  0.898  0.850  0.797  1.0
  Re  Re7  1  0.024  0.716  0.048  1.0
  Si  Si8  1  0.183  0.889  0.366  1.0
  Si  Si9  1  0.316  0.788  0.633  1.0
  Si  Si10  1  0.442  0.655  0.884  1.0
  Si  Si11  1  0.568  0.524  0.135  1.0
  Si  Si12  1  0.690  0.394  0.380  1.0
  Si  Si13  1  0.827  0.235  0.653  1.0
  Si  Si14  1  0.996  0.000  0.991  1.0
  Si  Si15  1  0.105  0.294  0.210  1.0
  Si  Si16  1  0.235  0.184  0.469  1.0
  Si  Si17  1  0.730  0.685  0.460  1.0
  Si  Si18  1  0.856  0.560  0.711  1.0
  Si  Si19  1  0.981  0.422  0.962  1.0
  Si  Si20  1  0.578  0.897  0.157  1.0
  Si  Si21  1  0.414  0.081  0.829  1.0
[/CIF]
.
The crystal structure described by Re4Si7 crystallizes in the monoclinic Cm space group. There are eight inequivalent Re sites. In the first Re site, Re(1) is bonded in a 8-coordinate geometry to one Si(1), one Si(8), two equivalent Si(10), two equivalent Si(4), and two equivalent Si(5) atoms. In the second Re site, Re(2) is bonded in a 10-coordinate geometry to one Si(2), one Si(9), two equivalent Si(10), two equivalent Si(11), two equivalent Si(5), and two equivalent Si(6) atoms. In the third Re site, Re(3) is bonded in a 8-coordinate geometry to one Si(14), one Si(3), two equivalent Si(11), two equivalent Si(12), and two equivalent Si(6) atoms. In the fourth Re site, Re(4) is bonded in a 8-coordinate geometry to one Si(14), one Si(4), two equivalent Si(12), two equivalent Si(7), and two equivalent Si(8) atoms. In the fifth Re site, Re(5) is bonded in a 8-coordinate geometry to one Si(13), one Si(5), two equivalent Si(1), two equivalent Si(8), and two equivalent Si(9) atoms. In the sixth Re site, Re(6) is bonded in a 8-coordinate geometry to one Si(10), one Si(6), two equivalent Si(1), two equivalent Si(2), and two equivalent Si(9) atoms. In the seventh Re site, Re(7) is bonded in a 8-coordinate geometry to one Si(11), one Si(7), two equivalent Si(14), two equivalent Si(2), and two equivalent Si(3) atoms. In the eighth Re site, Re(8) is bonded in a 8-coordinate geometry to one Si(12), one Si(7), two equivalent Si(13), two equivalent Si(3), and two equivalent Si(4) atoms. There are fourteen inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Re(1), two equivalent Re(5), two equivalent Re(6), one Si(9), two equivalent Si(10), and two equivalent Si(13) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Re(2), two equivalent Re(6), two equivalent Re(7), two equivalent Si(10), and two equivalent Si(11) atoms. In the third Si site, Si(3) is bonded in a distorted q6 geometry to one Re(3), two equivalent Re(7), two equivalent Re(8), two equivalent Si(11), and two equivalent Si(12) atoms. In the fourth Si site, Si(4) is bonded in a distorted q6 geometry to one Re(4), two equivalent Re(1), two equivalent Re(8), two equivalent Si(12), and two equivalent Si(8) atoms. In the fifth Si site, Si(5) is bonded in a distorted q6 geometry to one Re(5), two equivalent Re(1), two equivalent Re(2), one Si(10), two equivalent Si(8), and two equivalent Si(9) atoms. In the sixth Si site, Si(6) is bonded in a 10-coordinate geometry to one Re(6), two equivalent Re(2), two equivalent Re(3), one Si(11), two equivalent Si(14), and two equivalent Si(9) atoms. In the seventh Si site, Si(7) is bonded in a 8-coordinate geometry to one Re(7), one Re(8), two equivalent Re(4), two equivalent Si(13), and two equivalent Si(14) atoms. In the eighth Si site, Si(8) is bonded in a distorted q6 geometry to one Re(1), two equivalent Re(4), two equivalent Re(5), two equivalent Si(4), and two equivalent Si(5) atoms. In the ninth Si site, Si(9) is bonded in a distorted q6 geometry to one Re(2), two equivalent Re(5), two equivalent Re(6), one Si(1), two equivalent Si(5), and two equivalent Si(6) atoms. In the tenth Si site, Si(10) is bonded in a distorted q6 geometry to one Re(6), two equivalent Re(1), two equivalent Re(2), one Si(5), two equivalent Si(1), and two equivalent Si(2) atoms. In the eleventh Si site, Si(11) is bonded in a 10-coordinate geometry to one Re(7), two equivalent Re(2), two equivalent Re(3), one Si(6), two equivalent Si(2), and two equivalent Si(3) atoms. In the twelfth Si site, Si(12) is bonded in a distorted q6 geometry to one Re(8), two equivalent Re(3), two equivalent Re(4), two equivalent Si(3), and two equivalent Si(4) atoms. In the thirteenth Si site, Si(13) is bonded in a 5-coordinate geometry to one Re(5), two equivalent Re(8), two equivalent Si(1), and two equivalent Si(7) atoms. In the fourteenth Si site, Si(14) is bonded in a 8-coordinate geometry to one Re(3), one Re(4), two equivalent Re(7), two equivalent Si(6), and two equivalent Si(7) atoms. is represented by the CIF file [CIF]
data_Re4Si7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.159
_cell_length_b   8.344
_cell_length_c   11.756
_cell_angle_alpha   92.828
_cell_angle_beta   97.721
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   306.670
_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
  Re  Re0  1  0.149  0.589  0.298  1.0
  Re  Re1  1  0.274  0.480  0.549  1.0
  Re  Re2  1  0.398  0.367  0.797  1.0
  Re  Re3  1  0.523  0.224  0.046  1.0
  Re  Re4  1  0.652  0.110  0.305  1.0
  Re  Re5  1  0.769  0.970  0.537  1.0
  Re  Re6  1  0.898  0.850  0.797  1.0
  Re  Re7  1  0.024  0.716  0.048  1.0
  Si  Si8  1  0.183  0.889  0.366  1.0
  Si  Si9  1  0.316  0.788  0.633  1.0
  Si  Si10  1  0.442  0.655  0.884  1.0
  Si  Si11  1  0.568  0.524  0.135  1.0
  Si  Si12  1  0.690  0.394  0.380  1.0
  Si  Si13  1  0.827  0.235  0.653  1.0
  Si  Si14  1  0.996  0.000  0.991  1.0
  Si  Si15  1  0.105  0.294  0.210  1.0
  Si  Si16  1  0.235  0.184  0.469  1.0
  Si  Si17  1  0.730  0.685  0.460  1.0
  Si  Si18  1  0.856  0.560  0.711  1.0
  Si  Si19  1  0.981  0.422  0.962  1.0
  Si  Si20  1  0.578  0.897  0.157  1.0
  Si  Si21  1  0.414  0.081  0.829  1.0
[/CIF]
.