The material described by Al37(Fe6Cu)2 crystallizes in the monoclinic Cm space group. There are ten inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 10-coordinate geometry to one Al(22), one Al(23), one Al(26), one Al(7), two equivalent Al(14), two equivalent Al(15), and two equivalent Al(9) atoms. In the second Fe site, Fe(2) is bonded in a 10-coordinate geometry to one Cu(1), one Al(22), one Al(23), one Al(8), two equivalent Al(10), two equivalent Al(13), and two equivalent Al(15) atoms. In the third Fe site, Fe(3) is bonded in a 11-coordinate geometry to one Cu(1), one Al(18), one Al(22), one Al(24), one Al(25), two equivalent Al(11), two equivalent Al(4), and two equivalent Al(6) atoms. In the fourth Fe site, Fe(4) is bonded in a 11-coordinate geometry to one Al(19), one Al(23), one Al(24), one Al(25), one Al(26), two equivalent Al(12), two equivalent Al(3), and two equivalent Al(5) atoms. In the fifth Fe site, Fe(5) is bonded in a 10-coordinate geometry to one Cu(2), one Al(17), one Al(19), one Al(20), two equivalent Al(11), two equivalent Al(4), and two equivalent Al(6) atoms. In the sixth Fe site, Fe(6) is bonded in a 10-coordinate geometry to one Cu(2), one Al(16), one Al(18), one Al(21), two equivalent Al(12), two equivalent Al(3), and two equivalent Al(5) atoms. In the seventh Fe site, Fe(7) is bonded in a 9-coordinate geometry to one Al(1), one Al(11), one Al(13), one Al(16), one Al(24), one Al(26), one Al(3), one Al(5), and one Al(9) atom. In the eighth Fe site, Fe(8) is bonded in a 9-coordinate geometry to one Cu(1), one Al(10), one Al(12), one Al(14), one Al(17), one Al(2), one Al(25), one Al(4), and one Al(6) atom. In the ninth Fe site, Fe(9) is bonded in a 10-coordinate geometry to one Al(16), one Al(20), one Al(21), one Al(7), two equivalent Al(10), two equivalent Al(13), and two equivalent Al(15) atoms. In the tenth Fe site, Fe(10) is bonded in a 10-coordinate geometry to one Al(17), one Al(20), one Al(21), one Al(8), two equivalent Al(14), two equivalent Al(15), and two equivalent Al(9) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to one Fe(2), one Fe(3), two equivalent Fe(8), one Al(22), one Al(25), one Al(8), two equivalent Al(10), and two equivalent Al(6) atoms. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to one Fe(5), one Fe(6), two equivalent Al(11), two equivalent Al(12), two equivalent Al(5), and two equivalent Al(6) atoms. There are twenty-six inequivalent Al sites. In the first Al site, Al(1) is bonded in a linear geometry to two equivalent Fe(7) and two equivalent Al(13) atoms. In the second Al site, Al(2) is bonded in a linear geometry to two equivalent Fe(8) and two equivalent Al(10) atoms. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to one Fe(4), one Fe(6), one Fe(7), one Al(13), one Al(16), and one Al(23) atom. In the fourth Al site, Al(4) is bonded in a 3-coordinate geometry to one Fe(3), one Fe(5), one Fe(8), and one Al(17) atom. In the fifth Al site, Al(5) is bonded in a 4-coordinate geometry to one Fe(4), one Fe(6), one Fe(7), one Cu(2), one Al(21), one Al(24), and one Al(26) atom. In the sixth Al site, Al(6) is bonded in a 5-coordinate geometry to one Fe(3), one Fe(5), one Fe(8), one Cu(1), one Cu(2), one Al(10), one Al(20), and one Al(25) atom. In the seventh Al site, Al(7) is bonded in a 2-coordinate geometry to one Fe(1), one Fe(9), one Al(16), one Al(26), two equivalent Al(10), and two equivalent Al(13) atoms. In the eighth Al site, Al(8) is bonded in a 3-coordinate geometry to one Fe(10), one Fe(2), one Cu(1), one Al(17), two equivalent Al(10), and two equivalent Al(13) atoms. In the ninth Al site, Al(9) is bonded in a 2-coordinate geometry to one Fe(1), one Fe(10), one Fe(7), one Al(13), one Al(21), and one Al(26) atom. In the tenth Al site, Al(10) is bonded in a 12-coordinate geometry to one Fe(2), one Fe(8), one Fe(9), one Cu(1), one Al(13), one Al(14), one Al(15), one Al(2), one Al(20), one Al(6), one Al(7), and one Al(8) atom. In the eleventh Al site, Al(11) is bonded in a 3-coordinate geometry to one Fe(3), one Fe(5), one Fe(7), one Cu(2), and one Al(24) atom. In the twelfth Al site, Al(12) is bonded in a 3-coordinate geometry to one Fe(4), one Fe(6), one Fe(8), one Cu(2), and one Al(25) atom. In the thirteenth Al site, Al(13) is bonded in a 12-coordinate geometry to one Fe(2), one Fe(7), one Fe(9), one Al(1), one Al(10), one Al(15), one Al(16), one Al(23), one Al(3), one Al(7), one Al(8), and one Al(9) atom. In the fourteenth Al site, Al(14) is bonded in a 2-coordinate geometry to one Fe(1), one Fe(10), one Fe(8), one Al(10), and one Al(17) atom. In the fifteenth Al site, Al(15) is bonded in a 4-coordinate geometry to one Fe(1), one Fe(10), one Fe(2), one Fe(9), one Al(10), one Al(13), one Al(20), one Al(21), and one Al(23) atom. In the sixteenth Al site, Al(16) is bonded in a 11-coordinate geometry to one Fe(6), one Fe(9), two equivalent Fe(7), one Al(18), one Al(21), one Al(7), two equivalent Al(13), and two equivalent Al(3) atoms. In the seventeenth Al site, Al(17) is bonded in a 11-coordinate geometry to one Fe(10), one Fe(5), two equivalent Fe(8), one Al(19), one Al(20), one Al(8), two equivalent Al(14), and two equivalent Al(4) atoms. In the eighteenth Al site, Al(18) is bonded in a distorted bent 150 degrees geometry to one Fe(3), one Fe(6), one Al(16), and one Al(24) atom. In the nineteenth Al site, Al(19) is bonded in a distorted bent 150 degrees geometry to one Fe(4), one Fe(5), one Al(17), and one Al(25) atom. In the twentieth Al site, Al(20) is bonded in a 10-coordinate geometry to one Fe(10), one Fe(5), one Fe(9), one Al(17), two equivalent Al(10), two equivalent Al(15), and two equivalent Al(6) atoms. In the twenty-first Al site, Al(21) is bonded in a 10-coordinate geometry to one Fe(10), one Fe(6), one Fe(9), one Al(16), two equivalent Al(15), two equivalent Al(5), and two equivalent Al(9) atoms. In the twenty-second Al site, Al(22) is bonded in a 4-coordinate geometry to one Fe(1), one Fe(2), one Fe(3), and one Cu(1) atom. In the twenty-third Al site, Al(23) is bonded in a 10-coordinate geometry to one Fe(1), one Fe(2), one Fe(4), one Al(26), two equivalent Al(13), two equivalent Al(15), and two equivalent Al(3) atoms. In the twenty-fourth Al site, Al(24) is bonded in a 11-coordinate geometry to one Fe(3), one Fe(4), two equivalent Fe(7), one Al(18), one Al(25), one Al(26), two equivalent Al(11), and two equivalent Al(5) atoms. In the twenty-fifth Al site, Al(25) is bonded in a 11-coordinate geometry to one Fe(3), one Fe(4), two equivalent Fe(8), one Cu(1), one Al(19), one Al(24), two equivalent Al(12), and two equivalent Al(6) atoms. In the twenty-sixth Al site, Al(26) is bonded in a 11-coordinate geometry to one Fe(1), one Fe(4), two equivalent Fe(7), one Al(23), one Al(24), one Al(7), two equivalent Al(5), and two equivalent Al(9) atoms. is represented by the CIF card [CIF]
data_Al37(Fe6Cu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.649
_cell_length_b   8.649
_cell_length_c   12.323
_cell_angle_alpha   73.905
_cell_angle_beta   73.905
_cell_angle_gamma   53.698
_symmetry_Int_Tables_number   1
_cell_volume   706.139
_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
  Al  Al0  1  0.678  0.678  0.281  1.0
  Al  Al1  1  0.326  0.326  0.722  1.0
  Al  Al2  1  0.603  0.038  0.339  1.0
  Al  Al3  1  0.038  0.603  0.339  1.0
  Al  Al4  1  0.394  0.967  0.662  1.0
  Al  Al5  1  0.967  0.394  0.662  1.0
  Al  Al6  1  0.289  0.733  0.336  1.0
  Al  Al7  1  0.733  0.289  0.336  1.0
  Al  Al8  1  0.721  0.259  0.669  1.0
  Al  Al9  1  0.259  0.721  0.669  1.0
  Al  Al10  1  0.239  0.239  0.047  1.0
  Al  Al11  1  0.767  0.767  0.936  1.0
  Al  Al12  1  0.426  0.842  0.109  1.0
  Al  Al13  1  0.842  0.426  0.109  1.0
  Al  Al14  1  0.593  0.150  0.887  1.0
  Al  Al15  1  0.150  0.593  0.887  1.0
  Al  Al16  1  0.424  0.839  0.479  1.0
  Al  Al17  1  0.839  0.424  0.479  1.0
  Al  Al18  1  0.575  0.161  0.524  1.0
  Al  Al19  1  0.161  0.575  0.524  1.0
  Al  Al20  1  0.599  0.028  0.110  1.0
  Al  Al21  1  0.028  0.599  0.110  1.0
  Al  Al22  1  0.398  0.973  0.888  1.0
  Al  Al23  1  0.973  0.398  0.888  1.0
  Al  Al24  1  0.749  0.251  0.001  1.0
  Al  Al25  1  0.251  0.749  0.001  1.0
  Al  Al26  1  0.307  0.307  0.227  1.0
  Al  Al27  1  0.690  0.690  0.771  1.0
  Al  Al28  1  0.233  0.233  0.456  1.0
  Al  Al29  1  0.767  0.767  0.544  1.0
  Al  Al30  1  0.519  0.519  0.831  1.0
  Al  Al31  1  0.479  0.479  0.169  1.0
  Al  Al32  1  0.058  0.058  0.826  1.0
  Al  Al33  1  0.934  0.934  0.175  1.0
  Al  Al34  1  0.071  0.071  0.422  1.0
  Al  Al35  1  0.925  0.925  0.588  1.0
  Al  Al36  1  0.082  0.082  0.215  1.0
  Fe  Fe37  1  0.089  0.089  0.011  1.0
  Fe  Fe38  1  0.910  0.910  0.995  1.0
  Fe  Fe39  1  0.088  0.088  0.613  1.0
  Fe  Fe40  1  0.917  0.917  0.381  1.0
  Fe  Fe41  1  0.601  0.601  0.632  1.0
  Fe  Fe42  1  0.397  0.397  0.369  1.0
  Fe  Fe43  1  0.384  0.977  0.276  1.0
  Fe  Fe44  1  0.977  0.384  0.276  1.0
  Fe  Fe45  1  0.610  0.020  0.722  1.0
  Fe  Fe46  1  0.020  0.610  0.722  1.0
  Fe  Fe47  1  0.403  0.403  0.014  1.0
  Fe  Fe48  1  0.597  0.597  0.986  1.0
  Cu  Cu49  1  0.921  0.921  0.783  1.0
  Cu  Cu50  1  0.499  0.499  0.502  1.0
[/CIF]
.
The material described by Al37(Fe6Cu)2 crystallizes in the monoclinic Cm space group. There are ten inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 10-coordinate geometry to one Al(22), one Al(23), one Al(26), one Al(7), two equivalent Al(14), two equivalent Al(15), and two equivalent Al(9) atoms. In the second Fe site, Fe(2) is bonded in a 10-coordinate geometry to one Cu(1), one Al(22), one Al(23), one Al(8), two equivalent Al(10), two equivalent Al(13), and two equivalent Al(15) atoms. In the third Fe site, Fe(3) is bonded in a 11-coordinate geometry to one Cu(1), one Al(18), one Al(22), one Al(24), one Al(25), two equivalent Al(11), two equivalent Al(4), and two equivalent Al(6) atoms. In the fourth Fe site, Fe(4) is bonded in a 11-coordinate geometry to one Al(19), one Al(23), one Al(24), one Al(25), one Al(26), two equivalent Al(12), two equivalent Al(3), and two equivalent Al(5) atoms. In the fifth Fe site, Fe(5) is bonded in a 10-coordinate geometry to one Cu(2), one Al(17), one Al(19), one Al(20), two equivalent Al(11), two equivalent Al(4), and two equivalent Al(6) atoms. In the sixth Fe site, Fe(6) is bonded in a 10-coordinate geometry to one Cu(2), one Al(16), one Al(18), one Al(21), two equivalent Al(12), two equivalent Al(3), and two equivalent Al(5) atoms. In the seventh Fe site, Fe(7) is bonded in a 9-coordinate geometry to one Al(1), one Al(11), one Al(13), one Al(16), one Al(24), one Al(26), one Al(3), one Al(5), and one Al(9) atom. In the eighth Fe site, Fe(8) is bonded in a 9-coordinate geometry to one Cu(1), one Al(10), one Al(12), one Al(14), one Al(17), one Al(2), one Al(25), one Al(4), and one Al(6) atom. In the ninth Fe site, Fe(9) is bonded in a 10-coordinate geometry to one Al(16), one Al(20), one Al(21), one Al(7), two equivalent Al(10), two equivalent Al(13), and two equivalent Al(15) atoms. In the tenth Fe site, Fe(10) is bonded in a 10-coordinate geometry to one Al(17), one Al(20), one Al(21), one Al(8), two equivalent Al(14), two equivalent Al(15), and two equivalent Al(9) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to one Fe(2), one Fe(3), two equivalent Fe(8), one Al(22), one Al(25), one Al(8), two equivalent Al(10), and two equivalent Al(6) atoms. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to one Fe(5), one Fe(6), two equivalent Al(11), two equivalent Al(12), two equivalent Al(5), and two equivalent Al(6) atoms. There are twenty-six inequivalent Al sites. In the first Al site, Al(1) is bonded in a linear geometry to two equivalent Fe(7) and two equivalent Al(13) atoms. In the second Al site, Al(2) is bonded in a linear geometry to two equivalent Fe(8) and two equivalent Al(10) atoms. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to one Fe(4), one Fe(6), one Fe(7), one Al(13), one Al(16), and one Al(23) atom. In the fourth Al site, Al(4) is bonded in a 3-coordinate geometry to one Fe(3), one Fe(5), one Fe(8), and one Al(17) atom. In the fifth Al site, Al(5) is bonded in a 4-coordinate geometry to one Fe(4), one Fe(6), one Fe(7), one Cu(2), one Al(21), one Al(24), and one Al(26) atom. In the sixth Al site, Al(6) is bonded in a 5-coordinate geometry to one Fe(3), one Fe(5), one Fe(8), one Cu(1), one Cu(2), one Al(10), one Al(20), and one Al(25) atom. In the seventh Al site, Al(7) is bonded in a 2-coordinate geometry to one Fe(1), one Fe(9), one Al(16), one Al(26), two equivalent Al(10), and two equivalent Al(13) atoms. In the eighth Al site, Al(8) is bonded in a 3-coordinate geometry to one Fe(10), one Fe(2), one Cu(1), one Al(17), two equivalent Al(10), and two equivalent Al(13) atoms. In the ninth Al site, Al(9) is bonded in a 2-coordinate geometry to one Fe(1), one Fe(10), one Fe(7), one Al(13), one Al(21), and one Al(26) atom. In the tenth Al site, Al(10) is bonded in a 12-coordinate geometry to one Fe(2), one Fe(8), one Fe(9), one Cu(1), one Al(13), one Al(14), one Al(15), one Al(2), one Al(20), one Al(6), one Al(7), and one Al(8) atom. In the eleventh Al site, Al(11) is bonded in a 3-coordinate geometry to one Fe(3), one Fe(5), one Fe(7), one Cu(2), and one Al(24) atom. In the twelfth Al site, Al(12) is bonded in a 3-coordinate geometry to one Fe(4), one Fe(6), one Fe(8), one Cu(2), and one Al(25) atom. In the thirteenth Al site, Al(13) is bonded in a 12-coordinate geometry to one Fe(2), one Fe(7), one Fe(9), one Al(1), one Al(10), one Al(15), one Al(16), one Al(23), one Al(3), one Al(7), one Al(8), and one Al(9) atom. In the fourteenth Al site, Al(14) is bonded in a 2-coordinate geometry to one Fe(1), one Fe(10), one Fe(8), one Al(10), and one Al(17) atom. In the fifteenth Al site, Al(15) is bonded in a 4-coordinate geometry to one Fe(1), one Fe(10), one Fe(2), one Fe(9), one Al(10), one Al(13), one Al(20), one Al(21), and one Al(23) atom. In the sixteenth Al site, Al(16) is bonded in a 11-coordinate geometry to one Fe(6), one Fe(9), two equivalent Fe(7), one Al(18), one Al(21), one Al(7), two equivalent Al(13), and two equivalent Al(3) atoms. In the seventeenth Al site, Al(17) is bonded in a 11-coordinate geometry to one Fe(10), one Fe(5), two equivalent Fe(8), one Al(19), one Al(20), one Al(8), two equivalent Al(14), and two equivalent Al(4) atoms. In the eighteenth Al site, Al(18) is bonded in a distorted bent 150 degrees geometry to one Fe(3), one Fe(6), one Al(16), and one Al(24) atom. In the nineteenth Al site, Al(19) is bonded in a distorted bent 150 degrees geometry to one Fe(4), one Fe(5), one Al(17), and one Al(25) atom. In the twentieth Al site, Al(20) is bonded in a 10-coordinate geometry to one Fe(10), one Fe(5), one Fe(9), one Al(17), two equivalent Al(10), two equivalent Al(15), and two equivalent Al(6) atoms. In the twenty-first Al site, Al(21) is bonded in a 10-coordinate geometry to one Fe(10), one Fe(6), one Fe(9), one Al(16), two equivalent Al(15), two equivalent Al(5), and two equivalent Al(9) atoms. In the twenty-second Al site, Al(22) is bonded in a 4-coordinate geometry to one Fe(1), one Fe(2), one Fe(3), and one Cu(1) atom. In the twenty-third Al site, Al(23) is bonded in a 10-coordinate geometry to one Fe(1), one Fe(2), one Fe(4), one Al(26), two equivalent Al(13), two equivalent Al(15), and two equivalent Al(3) atoms. In the twenty-fourth Al site, Al(24) is bonded in a 11-coordinate geometry to one Fe(3), one Fe(4), two equivalent Fe(7), one Al(18), one Al(25), one Al(26), two equivalent Al(11), and two equivalent Al(5) atoms. In the twenty-fifth Al site, Al(25) is bonded in a 11-coordinate geometry to one Fe(3), one Fe(4), two equivalent Fe(8), one Cu(1), one Al(19), one Al(24), two equivalent Al(12), and two equivalent Al(6) atoms. In the twenty-sixth Al site, Al(26) is bonded in a 11-coordinate geometry to one Fe(1), one Fe(4), two equivalent Fe(7), one Al(23), one Al(24), one Al(7), two equivalent Al(5), and two equivalent Al(9) atoms. is represented by the CIF card [CIF]
data_Al37(Fe6Cu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.649
_cell_length_b   8.649
_cell_length_c   12.323
_cell_angle_alpha   73.905
_cell_angle_beta   73.905
_cell_angle_gamma   53.698
_symmetry_Int_Tables_number   1
_cell_volume   706.139
_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
  Al  Al0  1  0.678  0.678  0.281  1.0
  Al  Al1  1  0.326  0.326  0.722  1.0
  Al  Al2  1  0.603  0.038  0.339  1.0
  Al  Al3  1  0.038  0.603  0.339  1.0
  Al  Al4  1  0.394  0.967  0.662  1.0
  Al  Al5  1  0.967  0.394  0.662  1.0
  Al  Al6  1  0.289  0.733  0.336  1.0
  Al  Al7  1  0.733  0.289  0.336  1.0
  Al  Al8  1  0.721  0.259  0.669  1.0
  Al  Al9  1  0.259  0.721  0.669  1.0
  Al  Al10  1  0.239  0.239  0.047  1.0
  Al  Al11  1  0.767  0.767  0.936  1.0
  Al  Al12  1  0.426  0.842  0.109  1.0
  Al  Al13  1  0.842  0.426  0.109  1.0
  Al  Al14  1  0.593  0.150  0.887  1.0
  Al  Al15  1  0.150  0.593  0.887  1.0
  Al  Al16  1  0.424  0.839  0.479  1.0
  Al  Al17  1  0.839  0.424  0.479  1.0
  Al  Al18  1  0.575  0.161  0.524  1.0
  Al  Al19  1  0.161  0.575  0.524  1.0
  Al  Al20  1  0.599  0.028  0.110  1.0
  Al  Al21  1  0.028  0.599  0.110  1.0
  Al  Al22  1  0.398  0.973  0.888  1.0
  Al  Al23  1  0.973  0.398  0.888  1.0
  Al  Al24  1  0.749  0.251  0.001  1.0
  Al  Al25  1  0.251  0.749  0.001  1.0
  Al  Al26  1  0.307  0.307  0.227  1.0
  Al  Al27  1  0.690  0.690  0.771  1.0
  Al  Al28  1  0.233  0.233  0.456  1.0
  Al  Al29  1  0.767  0.767  0.544  1.0
  Al  Al30  1  0.519  0.519  0.831  1.0
  Al  Al31  1  0.479  0.479  0.169  1.0
  Al  Al32  1  0.058  0.058  0.826  1.0
  Al  Al33  1  0.934  0.934  0.175  1.0
  Al  Al34  1  0.071  0.071  0.422  1.0
  Al  Al35  1  0.925  0.925  0.588  1.0
  Al  Al36  1  0.082  0.082  0.215  1.0
  Fe  Fe37  1  0.089  0.089  0.011  1.0
  Fe  Fe38  1  0.910  0.910  0.995  1.0
  Fe  Fe39  1  0.088  0.088  0.613  1.0
  Fe  Fe40  1  0.917  0.917  0.381  1.0
  Fe  Fe41  1  0.601  0.601  0.632  1.0
  Fe  Fe42  1  0.397  0.397  0.369  1.0
  Fe  Fe43  1  0.384  0.977  0.276  1.0
  Fe  Fe44  1  0.977  0.384  0.276  1.0
  Fe  Fe45  1  0.610  0.020  0.722  1.0
  Fe  Fe46  1  0.020  0.610  0.722  1.0
  Fe  Fe47  1  0.403  0.403  0.014  1.0
  Fe  Fe48  1  0.597  0.597  0.986  1.0
  Cu  Cu49  1  0.921  0.921  0.783  1.0
  Cu  Cu50  1  0.499  0.499  0.502  1.0
[/CIF]
.