The compound described by Re4Ge7 is Magnesium tetraboride-like structured and crystallizes in the tetragonal P-4c2 space group. There are five inequivalent Re sites. In the first Re site, Re(1) is bonded in a 10-coordinate geometry to two equivalent Ge(4), four equivalent Ge(2), and four equivalent Ge(3) atoms. In the second Re site, Re(2) is bonded in a 8-coordinate geometry to four equivalent Ge(1) and four equivalent Ge(2) atoms. In the third Re site, Re(3) is bonded in a 8-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and two equivalent Ge(4) atoms. In the fourth Re site, Re(4) is bonded in a 8-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(1) atoms. In the fifth Re site, Re(5) is bonded in a 8-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), and four equivalent Ge(3) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Re(1), one Re(3), one Re(4), two equivalent Re(5), one Ge(2), one Ge(3), and one Ge(4) atom. In the second Ge site, Ge(4) is bonded in a 10-coordinate geometry to one Re(1), two equivalent Re(3), two equivalent Re(5), one Ge(4), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the third Ge site, Ge(1) is bonded in a 4-coordinate geometry to one Re(2), one Re(3), and two equivalent Re(4) atoms. In the fourth Ge site, Ge(2) is bonded in a 4-coordinate geometry to one Re(1), one Re(2), one Re(3), one Re(4), one Re(5), one Ge(3), and one Ge(4) atom. is represented by the CIF file [CIF]
data_Re4Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.023
_cell_length_b   6.023
_cell_length_c   19.181
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   695.905
_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
  Re  Re0  1  0.000  0.000  0.250  1.0
  Re  Re1  1  0.000  0.000  0.750  1.0
  Re  Re2  1  0.000  0.000  0.500  1.0
  Re  Re3  1  0.000  0.000  0.000  1.0
  Re  Re4  1  0.500  0.500  0.370  1.0
  Re  Re5  1  0.500  0.500  0.870  1.0
  Re  Re6  1  0.500  0.500  0.630  1.0
  Re  Re7  1  0.500  0.500  0.130  1.0
  Re  Re8  1  0.500  0.000  0.436  1.0
  Re  Re9  1  0.500  0.000  0.936  1.0
  Re  Re10  1  0.000  0.500  0.564  1.0
  Re  Re11  1  0.000  0.500  0.064  1.0
  Re  Re12  1  0.500  0.000  0.193  1.0
  Re  Re13  1  0.500  0.000  0.693  1.0
  Re  Re14  1  0.000  0.500  0.807  1.0
  Re  Re15  1  0.000  0.500  0.307  1.0
  Ge  Ge16  1  0.768  0.349  0.462  1.0
  Ge  Ge17  1  0.232  0.651  0.462  1.0
  Ge  Ge18  1  0.768  0.651  0.962  1.0
  Ge  Ge19  1  0.232  0.349  0.962  1.0
  Ge  Ge20  1  0.349  0.232  0.538  1.0
  Ge  Ge21  1  0.651  0.768  0.538  1.0
  Ge  Ge22  1  0.651  0.232  0.038  1.0
  Ge  Ge23  1  0.349  0.768  0.038  1.0
  Ge  Ge24  1  0.152  0.200  0.388  1.0
  Ge  Ge25  1  0.848  0.800  0.388  1.0
  Ge  Ge26  1  0.152  0.800  0.888  1.0
  Ge  Ge27  1  0.848  0.200  0.888  1.0
  Ge  Ge28  1  0.200  0.848  0.612  1.0
  Ge  Ge29  1  0.800  0.152  0.612  1.0
  Ge  Ge30  1  0.800  0.848  0.112  1.0
  Ge  Ge31  1  0.200  0.152  0.112  1.0
  Ge  Ge32  1  0.678  0.155  0.318  1.0
  Ge  Ge33  1  0.322  0.845  0.318  1.0
  Ge  Ge34  1  0.678  0.845  0.818  1.0
  Ge  Ge35  1  0.322  0.155  0.818  1.0
  Ge  Ge36  1  0.155  0.322  0.682  1.0
  Ge  Ge37  1  0.845  0.678  0.682  1.0
  Ge  Ge38  1  0.845  0.322  0.182  1.0
  Ge  Ge39  1  0.155  0.678  0.182  1.0
  Ge  Ge40  1  0.336  0.336  0.250  1.0
  Ge  Ge41  1  0.664  0.664  0.250  1.0
  Ge  Ge42  1  0.336  0.664  0.750  1.0
  Ge  Ge43  1  0.664  0.336  0.750  1.0
[/CIF]
.
The compound described by Re4Ge7 is Magnesium tetraboride-like structured and crystallizes in the tetragonal P-4c2 space group. There are five inequivalent Re sites. In the first Re site, Re(1) is bonded in a 10-coordinate geometry to two equivalent Ge(4), four equivalent Ge(2), and four equivalent Ge(3) atoms. In the second Re site, Re(2) is bonded in a 8-coordinate geometry to four equivalent Ge(1) and four equivalent Ge(2) atoms. In the third Re site, Re(3) is bonded in a 8-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and two equivalent Ge(4) atoms. In the fourth Re site, Re(4) is bonded in a 8-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(1) atoms. In the fifth Re site, Re(5) is bonded in a 8-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), and four equivalent Ge(3) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Re(1), one Re(3), one Re(4), two equivalent Re(5), one Ge(2), one Ge(3), and one Ge(4) atom. In the second Ge site, Ge(4) is bonded in a 10-coordinate geometry to one Re(1), two equivalent Re(3), two equivalent Re(5), one Ge(4), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the third Ge site, Ge(1) is bonded in a 4-coordinate geometry to one Re(2), one Re(3), and two equivalent Re(4) atoms. In the fourth Ge site, Ge(2) is bonded in a 4-coordinate geometry to one Re(1), one Re(2), one Re(3), one Re(4), one Re(5), one Ge(3), and one Ge(4) atom. is represented by the CIF file [CIF]
data_Re4Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.023
_cell_length_b   6.023
_cell_length_c   19.181
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   695.905
_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
  Re  Re0  1  0.000  0.000  0.250  1.0
  Re  Re1  1  0.000  0.000  0.750  1.0
  Re  Re2  1  0.000  0.000  0.500  1.0
  Re  Re3  1  0.000  0.000  0.000  1.0
  Re  Re4  1  0.500  0.500  0.370  1.0
  Re  Re5  1  0.500  0.500  0.870  1.0
  Re  Re6  1  0.500  0.500  0.630  1.0
  Re  Re7  1  0.500  0.500  0.130  1.0
  Re  Re8  1  0.500  0.000  0.436  1.0
  Re  Re9  1  0.500  0.000  0.936  1.0
  Re  Re10  1  0.000  0.500  0.564  1.0
  Re  Re11  1  0.000  0.500  0.064  1.0
  Re  Re12  1  0.500  0.000  0.193  1.0
  Re  Re13  1  0.500  0.000  0.693  1.0
  Re  Re14  1  0.000  0.500  0.807  1.0
  Re  Re15  1  0.000  0.500  0.307  1.0
  Ge  Ge16  1  0.768  0.349  0.462  1.0
  Ge  Ge17  1  0.232  0.651  0.462  1.0
  Ge  Ge18  1  0.768  0.651  0.962  1.0
  Ge  Ge19  1  0.232  0.349  0.962  1.0
  Ge  Ge20  1  0.349  0.232  0.538  1.0
  Ge  Ge21  1  0.651  0.768  0.538  1.0
  Ge  Ge22  1  0.651  0.232  0.038  1.0
  Ge  Ge23  1  0.349  0.768  0.038  1.0
  Ge  Ge24  1  0.152  0.200  0.388  1.0
  Ge  Ge25  1  0.848  0.800  0.388  1.0
  Ge  Ge26  1  0.152  0.800  0.888  1.0
  Ge  Ge27  1  0.848  0.200  0.888  1.0
  Ge  Ge28  1  0.200  0.848  0.612  1.0
  Ge  Ge29  1  0.800  0.152  0.612  1.0
  Ge  Ge30  1  0.800  0.848  0.112  1.0
  Ge  Ge31  1  0.200  0.152  0.112  1.0
  Ge  Ge32  1  0.678  0.155  0.318  1.0
  Ge  Ge33  1  0.322  0.845  0.318  1.0
  Ge  Ge34  1  0.678  0.845  0.818  1.0
  Ge  Ge35  1  0.322  0.155  0.818  1.0
  Ge  Ge36  1  0.155  0.322  0.682  1.0
  Ge  Ge37  1  0.845  0.678  0.682  1.0
  Ge  Ge38  1  0.845  0.322  0.182  1.0
  Ge  Ge39  1  0.155  0.678  0.182  1.0
  Ge  Ge40  1  0.336  0.336  0.250  1.0
  Ge  Ge41  1  0.664  0.664  0.250  1.0
  Ge  Ge42  1  0.336  0.664  0.750  1.0
  Ge  Ge43  1  0.664  0.336  0.750  1.0
[/CIF]
.