The compound described by Re4Si7 crystallizes in the monoclinic Cm space group. There are four inequivalent Re sites. In the first Re site, Re(1) is bonded in a 10-coordinate geometry to one Si(3), one Si(7), four equivalent Si(1), and four equivalent Si(5) atoms. In the second Re site, Re(2) is bonded in a 9-coordinate geometry to one Si(4), four equivalent Si(2), and four equivalent Si(6) atoms. In the third Re site, Re(3) is bonded in a 6-coordinate geometry to one Si(1), one Si(6), and four equivalent Si(3) atoms. In the fourth Re site, Re(4) is bonded in a 10-coordinate geometry to one Si(2), one Si(5), four equivalent Si(4), and four equivalent Si(7) atoms. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted q6 geometry to one Re(3), four equivalent Re(1), one Si(5), and four equivalent Si(3) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Re(4), four equivalent Re(2), one Si(6), and four equivalent Si(4) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Re(1), four equivalent Re(3), and four equivalent Si(1) atoms. In the fourth Si site, Si(4) is bonded in a distorted q6 geometry to one Re(2), four equivalent Re(4), one Si(7), and four equivalent Si(2) atoms. In the fifth Si site, Si(5) is bonded in a distorted q6 geometry to one Re(4), four equivalent Re(1), one Si(1), and four equivalent Si(7) atoms. In the sixth Si site, Si(6) is bonded in a 6-coordinate geometry to one Re(3), four equivalent Re(2), and one Si(2) atom. In the seventh Si site, Si(7) is bonded in a distorted q6 geometry to one Re(1), four equivalent Re(4), one Si(4), and four equivalent Si(5) atoms. is represented by the CIF card [CIF]
data_Re4Si7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.152
_cell_length_b   3.152
_cell_length_c   15.710
_cell_angle_alpha   89.942
_cell_angle_beta   89.942
_cell_angle_gamma   89.957
_symmetry_Int_Tables_number   1
_cell_volume   156.078
_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
  Re  Re0  1  0.493  0.493  0.246  1.0
  Re  Re1  1  0.500  0.500  0.736  1.0
  Re  Re2  1  0.998  0.998  0.999  1.0
  Re  Re3  1  0.993  0.993  0.491  1.0
  Si  Si4  1  0.997  0.997  0.154  1.0
  Si  Si5  1  0.997  0.997  0.664  1.0
  Si  Si6  1  0.498  0.498  0.063  1.0
  Si  Si7  1  0.495  0.495  0.579  1.0
  Si  Si8  1  0.992  0.992  0.324  1.0
  Si  Si9  1  0.965  0.965  0.841  1.0
  Si  Si10  1  0.492  0.492  0.409  1.0
[/CIF]
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The compound described by Re4Si7 crystallizes in the monoclinic Cm space group. There are four inequivalent Re sites. In the first Re site, Re(1) is bonded in a 10-coordinate geometry to one Si(3), one Si(7), four equivalent Si(1), and four equivalent Si(5) atoms. In the second Re site, Re(2) is bonded in a 9-coordinate geometry to one Si(4), four equivalent Si(2), and four equivalent Si(6) atoms. In the third Re site, Re(3) is bonded in a 6-coordinate geometry to one Si(1), one Si(6), and four equivalent Si(3) atoms. In the fourth Re site, Re(4) is bonded in a 10-coordinate geometry to one Si(2), one Si(5), four equivalent Si(4), and four equivalent Si(7) atoms. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted q6 geometry to one Re(3), four equivalent Re(1), one Si(5), and four equivalent Si(3) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Re(4), four equivalent Re(2), one Si(6), and four equivalent Si(4) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Re(1), four equivalent Re(3), and four equivalent Si(1) atoms. In the fourth Si site, Si(4) is bonded in a distorted q6 geometry to one Re(2), four equivalent Re(4), one Si(7), and four equivalent Si(2) atoms. In the fifth Si site, Si(5) is bonded in a distorted q6 geometry to one Re(4), four equivalent Re(1), one Si(1), and four equivalent Si(7) atoms. In the sixth Si site, Si(6) is bonded in a 6-coordinate geometry to one Re(3), four equivalent Re(2), and one Si(2) atom. In the seventh Si site, Si(7) is bonded in a distorted q6 geometry to one Re(1), four equivalent Re(4), one Si(4), and four equivalent Si(5) atoms. is represented by the CIF card [CIF]
data_Re4Si7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.152
_cell_length_b   3.152
_cell_length_c   15.710
_cell_angle_alpha   89.942
_cell_angle_beta   89.942
_cell_angle_gamma   89.957
_symmetry_Int_Tables_number   1
_cell_volume   156.078
_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
  Re  Re0  1  0.493  0.493  0.246  1.0
  Re  Re1  1  0.500  0.500  0.736  1.0
  Re  Re2  1  0.998  0.998  0.999  1.0
  Re  Re3  1  0.993  0.993  0.491  1.0
  Si  Si4  1  0.997  0.997  0.154  1.0
  Si  Si5  1  0.997  0.997  0.664  1.0
  Si  Si6  1  0.498  0.498  0.063  1.0
  Si  Si7  1  0.495  0.495  0.579  1.0
  Si  Si8  1  0.992  0.992  0.324  1.0
  Si  Si9  1  0.965  0.965  0.841  1.0
  Si  Si10  1  0.492  0.492  0.409  1.0
[/CIF]
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