The compound described by RhCu2Al7 crystallizes in the tetragonal P4/mnc space group. Rh(1) is bonded in a 9-coordinate geometry to one Al(2), four equivalent Al(1), and four equivalent Al(3) atoms. Cu(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1), two equivalent Al(2), and six equivalent Al(3) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to one Rh(1) and four equivalent Cu(1) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to one Rh(1) and three equivalent Cu(1) atoms. is represented by the CIF file [CIF]
data_Al7Cu2Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.370
_cell_length_b   6.370
_cell_length_c   14.719
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   597.231
_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
  Al  Al0  1  0.149  0.649  0.250  1.0
  Al  Al1  1  0.851  0.351  0.750  1.0
  Al  Al2  1  0.851  0.351  0.250  1.0
  Al  Al3  1  0.351  0.149  0.250  1.0
  Al  Al4  1  0.149  0.649  0.750  1.0
  Al  Al5  1  0.649  0.851  0.750  1.0
  Al  Al6  1  0.649  0.851  0.250  1.0
  Al  Al7  1  0.351  0.149  0.750  1.0
  Al  Al8  1  0.000  0.000  0.127  1.0
  Al  Al9  1  0.000  0.000  0.873  1.0
  Al  Al10  1  0.500  0.500  0.373  1.0
  Al  Al11  1  0.500  0.500  0.627  1.0
  Al  Al12  1  0.199  0.413  0.097  1.0
  Al  Al13  1  0.801  0.587  0.903  1.0
  Al  Al14  1  0.801  0.587  0.097  1.0
  Al  Al15  1  0.587  0.199  0.097  1.0
  Al  Al16  1  0.301  0.913  0.403  1.0
  Al  Al17  1  0.199  0.413  0.903  1.0
  Al  Al18  1  0.413  0.801  0.903  1.0
  Al  Al19  1  0.699  0.087  0.597  1.0
  Al  Al20  1  0.413  0.801  0.097  1.0
  Al  Al21  1  0.699  0.087  0.403  1.0
  Al  Al22  1  0.587  0.199  0.903  1.0
  Al  Al23  1  0.301  0.913  0.597  1.0
  Al  Al24  1  0.913  0.699  0.403  1.0
  Al  Al25  1  0.087  0.301  0.597  1.0
  Al  Al26  1  0.087  0.301  0.403  1.0
  Al  Al27  1  0.913  0.699  0.597  1.0
  Cu  Cu28  1  0.268  0.095  0.000  1.0
  Cu  Cu29  1  0.732  0.905  0.000  1.0
  Cu  Cu30  1  0.905  0.268  0.000  1.0
  Cu  Cu31  1  0.232  0.595  0.500  1.0
  Cu  Cu32  1  0.095  0.732  0.000  1.0
  Cu  Cu33  1  0.768  0.405  0.500  1.0
  Cu  Cu34  1  0.595  0.768  0.500  1.0
  Cu  Cu35  1  0.405  0.232  0.500  1.0
  Rh  Rh36  1  0.000  0.000  0.298  1.0
  Rh  Rh37  1  0.000  0.000  0.702  1.0
  Rh  Rh38  1  0.500  0.500  0.202  1.0
  Rh  Rh39  1  0.500  0.500  0.798  1.0
[/CIF]
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The compound described by RhCu2Al7 crystallizes in the tetragonal P4/mnc space group. Rh(1) is bonded in a 9-coordinate geometry to one Al(2), four equivalent Al(1), and four equivalent Al(3) atoms. Cu(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1), two equivalent Al(2), and six equivalent Al(3) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to one Rh(1) and four equivalent Cu(1) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to one Rh(1) and three equivalent Cu(1) atoms. is represented by the CIF file [CIF]
data_Al7Cu2Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.370
_cell_length_b   6.370
_cell_length_c   14.719
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   597.231
_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
  Al  Al0  1  0.149  0.649  0.250  1.0
  Al  Al1  1  0.851  0.351  0.750  1.0
  Al  Al2  1  0.851  0.351  0.250  1.0
  Al  Al3  1  0.351  0.149  0.250  1.0
  Al  Al4  1  0.149  0.649  0.750  1.0
  Al  Al5  1  0.649  0.851  0.750  1.0
  Al  Al6  1  0.649  0.851  0.250  1.0
  Al  Al7  1  0.351  0.149  0.750  1.0
  Al  Al8  1  0.000  0.000  0.127  1.0
  Al  Al9  1  0.000  0.000  0.873  1.0
  Al  Al10  1  0.500  0.500  0.373  1.0
  Al  Al11  1  0.500  0.500  0.627  1.0
  Al  Al12  1  0.199  0.413  0.097  1.0
  Al  Al13  1  0.801  0.587  0.903  1.0
  Al  Al14  1  0.801  0.587  0.097  1.0
  Al  Al15  1  0.587  0.199  0.097  1.0
  Al  Al16  1  0.301  0.913  0.403  1.0
  Al  Al17  1  0.199  0.413  0.903  1.0
  Al  Al18  1  0.413  0.801  0.903  1.0
  Al  Al19  1  0.699  0.087  0.597  1.0
  Al  Al20  1  0.413  0.801  0.097  1.0
  Al  Al21  1  0.699  0.087  0.403  1.0
  Al  Al22  1  0.587  0.199  0.903  1.0
  Al  Al23  1  0.301  0.913  0.597  1.0
  Al  Al24  1  0.913  0.699  0.403  1.0
  Al  Al25  1  0.087  0.301  0.597  1.0
  Al  Al26  1  0.087  0.301  0.403  1.0
  Al  Al27  1  0.913  0.699  0.597  1.0
  Cu  Cu28  1  0.268  0.095  0.000  1.0
  Cu  Cu29  1  0.732  0.905  0.000  1.0
  Cu  Cu30  1  0.905  0.268  0.000  1.0
  Cu  Cu31  1  0.232  0.595  0.500  1.0
  Cu  Cu32  1  0.095  0.732  0.000  1.0
  Cu  Cu33  1  0.768  0.405  0.500  1.0
  Cu  Cu34  1  0.595  0.768  0.500  1.0
  Cu  Cu35  1  0.405  0.232  0.500  1.0
  Rh  Rh36  1  0.000  0.000  0.298  1.0
  Rh  Rh37  1  0.000  0.000  0.702  1.0
  Rh  Rh38  1  0.500  0.500  0.202  1.0
  Rh  Rh39  1  0.500  0.500  0.798  1.0
[/CIF]
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