The structure described by Sc11(AlGe4)2 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to one Ge(2), one Ge(3), one Ge(4), and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing ScGe7 pentagonal bipyramids. In the second Sc site, Sc(2) is bonded in a 5-coordinate geometry to two equivalent Al(1), one Ge(4), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the third Sc site, Sc(3) is bonded in a 7-coordinate geometry to one Al(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the fourth Sc site, Sc(4) is bonded in a 9-coordinate geometry to four equivalent Al(1), one Ge(3), and four equivalent Ge(1) atoms. Al(1) is bonded in a 11-coordinate geometry to one Sc(3), two equivalent Sc(4), four equivalent Sc(2), two equivalent Al(1), and two equivalent Ge(1) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Sc(4), four equivalent Sc(1), and four equivalent Sc(3) atoms. In the second Ge site, Ge(4) is bonded in a 8-coordinate geometry to four equivalent Sc(1) and four equivalent Sc(2) atoms. In the third Ge site, Ge(1) is bonded in a 10-coordinate geometry to one Sc(3), one Sc(4), two equivalent Sc(2), four equivalent Sc(1), one Al(1), and one Ge(1) atom. In the fourth Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), and four equivalent Sc(2) atoms. is represented by the CIF file [CIF]
data_Sc11(AlGe4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.539
_cell_length_b   10.539
_cell_length_c   10.539
_cell_angle_alpha   120.577
_cell_angle_beta   120.577
_cell_angle_gamma   89.004
_symmetry_Int_Tables_number   1
_cell_volume   820.347
_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
  Sc  Sc0  1  0.941  0.690  0.251  1.0
  Sc  Sc1  1  0.690  0.941  0.251  1.0
  Sc  Sc2  1  0.690  0.438  0.749  1.0
  Sc  Sc3  1  0.059  0.310  0.749  1.0
  Sc  Sc4  1  0.439  0.103  0.336  1.0
  Sc  Sc5  1  0.103  0.767  0.664  1.0
  Sc  Sc6  1  0.103  0.439  0.336  1.0
  Sc  Sc7  1  0.561  0.897  0.664  1.0
  Sc  Sc8  1  0.233  0.897  0.336  1.0
  Sc  Sc9  1  0.897  0.233  0.336  1.0
  Sc  Sc10  1  0.897  0.561  0.664  1.0
  Sc  Sc11  1  0.767  0.103  0.664  1.0
  Sc  Sc12  1  0.328  0.328  0.657  1.0
  Sc  Sc13  1  0.328  0.672  0.000  1.0
  Sc  Sc14  1  0.672  0.328  0.000  1.0
  Sc  Sc15  1  0.672  0.672  0.343  1.0
  Sc  Sc16  1  0.169  0.169  0.000  1.0
  Sc  Sc17  1  0.831  0.831  0.000  1.0
  Sc  Sc18  1  0.310  0.562  0.251  1.0
  Sc  Sc19  1  0.310  0.059  0.749  1.0
  Sc  Sc20  1  0.562  0.310  0.251  1.0
  Sc  Sc21  1  0.438  0.690  0.749  1.0
  Al  Al22  1  0.873  0.127  0.000  1.0
  Al  Al23  1  0.127  0.873  0.000  1.0
  Al  Al24  1  0.127  0.127  0.254  1.0
  Al  Al25  1  0.873  0.873  0.746  1.0
  Ge  Ge26  1  0.374  0.374  0.408  1.0
  Ge  Ge27  1  0.374  0.967  0.000  1.0
  Ge  Ge28  1  0.967  0.374  0.000  1.0
  Ge  Ge29  1  0.626  0.033  0.000  1.0
  Ge  Ge30  1  0.033  0.626  0.000  1.0
  Ge  Ge31  1  0.033  0.033  0.408  1.0
  Ge  Ge32  1  0.626  0.626  0.592  1.0
  Ge  Ge33  1  0.967  0.967  0.592  1.0
  Ge  Ge34  1  0.500  0.147  0.647  1.0
  Ge  Ge35  1  0.147  0.500  0.647  1.0
  Ge  Ge36  1  0.853  0.500  0.353  1.0
  Ge  Ge37  1  0.500  0.853  0.353  1.0
  Ge  Ge38  1  0.382  0.382  0.000  1.0
  Ge  Ge39  1  0.618  0.618  0.000  1.0
  Ge  Ge40  1  0.750  0.250  0.500  1.0
  Ge  Ge41  1  0.250  0.750  0.500  1.0
[/CIF]
.
The structure described by Sc11(AlGe4)2 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to one Ge(2), one Ge(3), one Ge(4), and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing ScGe7 pentagonal bipyramids. In the second Sc site, Sc(2) is bonded in a 5-coordinate geometry to two equivalent Al(1), one Ge(4), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the third Sc site, Sc(3) is bonded in a 7-coordinate geometry to one Al(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the fourth Sc site, Sc(4) is bonded in a 9-coordinate geometry to four equivalent Al(1), one Ge(3), and four equivalent Ge(1) atoms. Al(1) is bonded in a 11-coordinate geometry to one Sc(3), two equivalent Sc(4), four equivalent Sc(2), two equivalent Al(1), and two equivalent Ge(1) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Sc(4), four equivalent Sc(1), and four equivalent Sc(3) atoms. In the second Ge site, Ge(4) is bonded in a 8-coordinate geometry to four equivalent Sc(1) and four equivalent Sc(2) atoms. In the third Ge site, Ge(1) is bonded in a 10-coordinate geometry to one Sc(3), one Sc(4), two equivalent Sc(2), four equivalent Sc(1), one Al(1), and one Ge(1) atom. In the fourth Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), and four equivalent Sc(2) atoms. is represented by the CIF file [CIF]
data_Sc11(AlGe4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.539
_cell_length_b   10.539
_cell_length_c   10.539
_cell_angle_alpha   120.577
_cell_angle_beta   120.577
_cell_angle_gamma   89.004
_symmetry_Int_Tables_number   1
_cell_volume   820.347
_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
  Sc  Sc0  1  0.941  0.690  0.251  1.0
  Sc  Sc1  1  0.690  0.941  0.251  1.0
  Sc  Sc2  1  0.690  0.438  0.749  1.0
  Sc  Sc3  1  0.059  0.310  0.749  1.0
  Sc  Sc4  1  0.439  0.103  0.336  1.0
  Sc  Sc5  1  0.103  0.767  0.664  1.0
  Sc  Sc6  1  0.103  0.439  0.336  1.0
  Sc  Sc7  1  0.561  0.897  0.664  1.0
  Sc  Sc8  1  0.233  0.897  0.336  1.0
  Sc  Sc9  1  0.897  0.233  0.336  1.0
  Sc  Sc10  1  0.897  0.561  0.664  1.0
  Sc  Sc11  1  0.767  0.103  0.664  1.0
  Sc  Sc12  1  0.328  0.328  0.657  1.0
  Sc  Sc13  1  0.328  0.672  0.000  1.0
  Sc  Sc14  1  0.672  0.328  0.000  1.0
  Sc  Sc15  1  0.672  0.672  0.343  1.0
  Sc  Sc16  1  0.169  0.169  0.000  1.0
  Sc  Sc17  1  0.831  0.831  0.000  1.0
  Sc  Sc18  1  0.310  0.562  0.251  1.0
  Sc  Sc19  1  0.310  0.059  0.749  1.0
  Sc  Sc20  1  0.562  0.310  0.251  1.0
  Sc  Sc21  1  0.438  0.690  0.749  1.0
  Al  Al22  1  0.873  0.127  0.000  1.0
  Al  Al23  1  0.127  0.873  0.000  1.0
  Al  Al24  1  0.127  0.127  0.254  1.0
  Al  Al25  1  0.873  0.873  0.746  1.0
  Ge  Ge26  1  0.374  0.374  0.408  1.0
  Ge  Ge27  1  0.374  0.967  0.000  1.0
  Ge  Ge28  1  0.967  0.374  0.000  1.0
  Ge  Ge29  1  0.626  0.033  0.000  1.0
  Ge  Ge30  1  0.033  0.626  0.000  1.0
  Ge  Ge31  1  0.033  0.033  0.408  1.0
  Ge  Ge32  1  0.626  0.626  0.592  1.0
  Ge  Ge33  1  0.967  0.967  0.592  1.0
  Ge  Ge34  1  0.500  0.147  0.647  1.0
  Ge  Ge35  1  0.147  0.500  0.647  1.0
  Ge  Ge36  1  0.853  0.500  0.353  1.0
  Ge  Ge37  1  0.500  0.853  0.353  1.0
  Ge  Ge38  1  0.382  0.382  0.000  1.0
  Ge  Ge39  1  0.618  0.618  0.000  1.0
  Ge  Ge40  1  0.750  0.250  0.500  1.0
  Ge  Ge41  1  0.250  0.750  0.500  1.0
[/CIF]
.