The structure described by Sr7Ge6 is delta Molybdenum Boride-like structured and crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to one Ge(1), one Ge(4), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(4) atoms. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to three equivalent Ge(2) and four equivalent Ge(1) atoms. In the fourth Sr site, Sr(4) is bonded in a 5-coordinate geometry to one Ge(3), two equivalent Ge(2), and two equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Sr(4), two equivalent Sr(1), two equivalent Sr(2), three equivalent Sr(3), and one Ge(1) atom. In the second Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Sr(4), two equivalent Sr(2), four equivalent Sr(1), and one Ge(4) atom. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(4), four equivalent Sr(2), and one Ge(3) atom. In the fourth Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), four equivalent Sr(3), one Ge(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Sr7Ge6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.839
_cell_length_b   8.612
_cell_length_c   23.752
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1603.479
_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
  Sr  Sr0  1  0.471  0.680  0.338  1.0
  Sr  Sr1  1  0.971  0.820  0.162  1.0
  Sr  Sr2  1  0.529  0.320  0.838  1.0
  Sr  Sr3  1  0.029  0.180  0.662  1.0
  Sr  Sr4  1  0.529  0.320  0.662  1.0
  Sr  Sr5  1  0.029  0.180  0.838  1.0
  Sr  Sr6  1  0.471  0.680  0.162  1.0
  Sr  Sr7  1  0.971  0.820  0.338  1.0
  Sr  Sr8  1  0.365  0.817  0.860  1.0
  Sr  Sr9  1  0.865  0.683  0.640  1.0
  Sr  Sr10  1  0.635  0.183  0.360  1.0
  Sr  Sr11  1  0.135  0.317  0.140  1.0
  Sr  Sr12  1  0.635  0.183  0.140  1.0
  Sr  Sr13  1  0.135  0.317  0.360  1.0
  Sr  Sr14  1  0.365  0.817  0.640  1.0
  Sr  Sr15  1  0.865  0.683  0.860  1.0
  Sr  Sr16  1  0.162  0.678  0.482  1.0
  Sr  Sr17  1  0.662  0.822  0.018  1.0
  Sr  Sr18  1  0.838  0.322  0.982  1.0
  Sr  Sr19  1  0.338  0.178  0.518  1.0
  Sr  Sr20  1  0.838  0.322  0.518  1.0
  Sr  Sr21  1  0.338  0.178  0.982  1.0
  Sr  Sr22  1  0.162  0.678  0.018  1.0
  Sr  Sr23  1  0.662  0.822  0.482  1.0
  Sr  Sr24  1  0.199  0.528  0.750  1.0
  Sr  Sr25  1  0.699  0.972  0.750  1.0
  Sr  Sr26  1  0.801  0.472  0.250  1.0
  Sr  Sr27  1  0.301  0.028  0.250  1.0
  Ge  Ge28  1  0.496  0.538  0.948  1.0
  Ge  Ge29  1  0.996  0.962  0.552  1.0
  Ge  Ge30  1  0.504  0.462  0.448  1.0
  Ge  Ge31  1  0.004  0.038  0.052  1.0
  Ge  Ge32  1  0.504  0.462  0.052  1.0
  Ge  Ge33  1  0.004  0.038  0.448  1.0
  Ge  Ge34  1  0.496  0.538  0.552  1.0
  Ge  Ge35  1  0.996  0.962  0.948  1.0
  Ge  Ge36  1  0.302  0.972  0.403  1.0
  Ge  Ge37  1  0.802  0.528  0.097  1.0
  Ge  Ge38  1  0.698  0.028  0.903  1.0
  Ge  Ge39  1  0.198  0.472  0.597  1.0
  Ge  Ge40  1  0.698  0.028  0.597  1.0
  Ge  Ge41  1  0.198  0.472  0.903  1.0
  Ge  Ge42  1  0.302  0.972  0.097  1.0
  Ge  Ge43  1  0.802  0.528  0.403  1.0
  Ge  Ge44  1  0.323  0.092  0.750  1.0
  Ge  Ge45  1  0.823  0.408  0.750  1.0
  Ge  Ge46  1  0.677  0.908  0.250  1.0
  Ge  Ge47  1  0.177  0.592  0.250  1.0
  Ge  Ge48  1  0.094  0.882  0.750  1.0
  Ge  Ge49  1  0.594  0.618  0.750  1.0
  Ge  Ge50  1  0.906  0.118  0.250  1.0
  Ge  Ge51  1  0.406  0.382  0.250  1.0
[/CIF]
.
The structure described by Sr7Ge6 is delta Molybdenum Boride-like structured and crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to one Ge(1), one Ge(4), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(4) atoms. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to three equivalent Ge(2) and four equivalent Ge(1) atoms. In the fourth Sr site, Sr(4) is bonded in a 5-coordinate geometry to one Ge(3), two equivalent Ge(2), and two equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Sr(4), two equivalent Sr(1), two equivalent Sr(2), three equivalent Sr(3), and one Ge(1) atom. In the second Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Sr(4), two equivalent Sr(2), four equivalent Sr(1), and one Ge(4) atom. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(4), four equivalent Sr(2), and one Ge(3) atom. In the fourth Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), four equivalent Sr(3), one Ge(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Sr7Ge6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.839
_cell_length_b   8.612
_cell_length_c   23.752
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1603.479
_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
  Sr  Sr0  1  0.471  0.680  0.338  1.0
  Sr  Sr1  1  0.971  0.820  0.162  1.0
  Sr  Sr2  1  0.529  0.320  0.838  1.0
  Sr  Sr3  1  0.029  0.180  0.662  1.0
  Sr  Sr4  1  0.529  0.320  0.662  1.0
  Sr  Sr5  1  0.029  0.180  0.838  1.0
  Sr  Sr6  1  0.471  0.680  0.162  1.0
  Sr  Sr7  1  0.971  0.820  0.338  1.0
  Sr  Sr8  1  0.365  0.817  0.860  1.0
  Sr  Sr9  1  0.865  0.683  0.640  1.0
  Sr  Sr10  1  0.635  0.183  0.360  1.0
  Sr  Sr11  1  0.135  0.317  0.140  1.0
  Sr  Sr12  1  0.635  0.183  0.140  1.0
  Sr  Sr13  1  0.135  0.317  0.360  1.0
  Sr  Sr14  1  0.365  0.817  0.640  1.0
  Sr  Sr15  1  0.865  0.683  0.860  1.0
  Sr  Sr16  1  0.162  0.678  0.482  1.0
  Sr  Sr17  1  0.662  0.822  0.018  1.0
  Sr  Sr18  1  0.838  0.322  0.982  1.0
  Sr  Sr19  1  0.338  0.178  0.518  1.0
  Sr  Sr20  1  0.838  0.322  0.518  1.0
  Sr  Sr21  1  0.338  0.178  0.982  1.0
  Sr  Sr22  1  0.162  0.678  0.018  1.0
  Sr  Sr23  1  0.662  0.822  0.482  1.0
  Sr  Sr24  1  0.199  0.528  0.750  1.0
  Sr  Sr25  1  0.699  0.972  0.750  1.0
  Sr  Sr26  1  0.801  0.472  0.250  1.0
  Sr  Sr27  1  0.301  0.028  0.250  1.0
  Ge  Ge28  1  0.496  0.538  0.948  1.0
  Ge  Ge29  1  0.996  0.962  0.552  1.0
  Ge  Ge30  1  0.504  0.462  0.448  1.0
  Ge  Ge31  1  0.004  0.038  0.052  1.0
  Ge  Ge32  1  0.504  0.462  0.052  1.0
  Ge  Ge33  1  0.004  0.038  0.448  1.0
  Ge  Ge34  1  0.496  0.538  0.552  1.0
  Ge  Ge35  1  0.996  0.962  0.948  1.0
  Ge  Ge36  1  0.302  0.972  0.403  1.0
  Ge  Ge37  1  0.802  0.528  0.097  1.0
  Ge  Ge38  1  0.698  0.028  0.903  1.0
  Ge  Ge39  1  0.198  0.472  0.597  1.0
  Ge  Ge40  1  0.698  0.028  0.597  1.0
  Ge  Ge41  1  0.198  0.472  0.903  1.0
  Ge  Ge42  1  0.302  0.972  0.097  1.0
  Ge  Ge43  1  0.802  0.528  0.403  1.0
  Ge  Ge44  1  0.323  0.092  0.750  1.0
  Ge  Ge45  1  0.823  0.408  0.750  1.0
  Ge  Ge46  1  0.677  0.908  0.250  1.0
  Ge  Ge47  1  0.177  0.592  0.250  1.0
  Ge  Ge48  1  0.094  0.882  0.750  1.0
  Ge  Ge49  1  0.594  0.618  0.750  1.0
  Ge  Ge50  1  0.906  0.118  0.250  1.0
  Ge  Ge51  1  0.406  0.382  0.250  1.0
[/CIF]
.