The material described by Pr2Co6Al19 crystallizes in the monoclinic C2/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 15-coordinate geometry to one Co(1), one Co(2), one Al(11), two equivalent Al(2), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. In the second Pr site, Pr(2) is bonded in a 15-coordinate geometry to one Co(1), one Co(2), one Al(3), two equivalent Al(2), two equivalent Al(4), two equivalent Al(5), two equivalent Al(6), two equivalent Al(8), and two equivalent Al(9) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 8-coordinate geometry to one Pr(1), one Pr(2), two equivalent Al(2), two equivalent Al(6), and four equivalent Al(7) atoms. In the second Co site, Co(2) is bonded in a 8-coordinate geometry to one Pr(1), one Pr(2), two equivalent Al(5), two equivalent Al(7), and four equivalent Al(6) atoms. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Al(1), one Al(10), one Al(11), one Al(2), one Al(4), one Al(5), one Al(6), one Al(8), and one Al(9) atom. In the fourth Co site, Co(4) is bonded in a 9-coordinate geometry to one Al(2), one Al(3), one Al(4), one Al(5), one Al(7), one Al(8), one Al(9), and two equivalent Al(10) atoms. There are eleven inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted linear geometry to two equivalent Co(3) atoms. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to one Pr(1), one Pr(2), one Co(1), one Co(3), one Co(4), one Al(10), one Al(6), one Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. In the third Al site, Al(3) is bonded in a distorted bent 150 degrees geometry to one Pr(2), two equivalent Co(4), and two equivalent Al(9) atoms. In the fourth Al site, Al(4) is bonded in a 2-coordinate geometry to one Pr(1), one Pr(2), one Co(3), and one Co(4) atom. In the fifth Al site, Al(5) is bonded in a 3-coordinate geometry to one Pr(1), one Pr(2), one Co(2), one Co(3), and one Co(4) atom. In the sixth Al site, Al(6) is bonded in a 4-coordinate geometry to one Pr(2), one Co(1), one Co(3), two equivalent Co(2), and one Al(2) atom. In the seventh Al site, Al(7) is bonded in a 4-coordinate geometry to one Pr(1), one Co(2), one Co(4), two equivalent Co(1), and one Al(2) atom. In the eighth Al site, Al(8) is bonded in a 2-coordinate geometry to one Pr(1), one Pr(2), one Co(3), one Co(4), two equivalent Al(2), and two equivalent Al(9) atoms. In the ninth Al site, Al(9) is bonded in a 12-coordinate geometry to one Pr(1), one Pr(2), one Co(3), one Co(4), one Al(10), one Al(11), one Al(3), one Al(9), two equivalent Al(2), and two equivalent Al(8) atoms. In the tenth Al site, Al(10) is bonded in a 3-coordinate geometry to one Co(3), two equivalent Co(4), one Al(2), and one Al(9) atom. In the eleventh Al site, Al(11) is bonded in a distorted bent 150 degrees geometry to one Pr(1), two equivalent Co(3), and two equivalent Al(9) atoms. is represented by the CIF file [CIF]
data_Pr2Al19Co6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.618
_cell_length_b   10.618
_cell_length_c   8.174
_cell_angle_alpha   78.433
_cell_angle_beta   78.433
_cell_angle_gamma   68.916
_symmetry_Int_Tables_number   1
_cell_volume   833.948
_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
  Pr  Pr0  1  0.721  0.721  0.255  1.0
  Pr  Pr1  1  0.279  0.279  0.745  1.0
  Pr  Pr2  1  0.720  0.720  0.773  1.0
  Pr  Pr3  1  0.280  0.280  0.227  1.0
  Al  Al4  1  0.171  0.829  0.000  1.0
  Al  Al5  1  0.186  0.522  0.447  1.0
  Al  Al6  1  0.920  0.920  0.638  1.0
  Al  Al7  1  0.272  0.046  0.051  1.0
  Al  Al8  1  0.543  0.190  0.942  1.0
  Al  Al9  1  0.434  0.668  0.845  1.0
  Al  Al10  1  0.331  0.562  0.647  1.0
  Al  Al11  1  0.001  0.503  0.765  1.0
  Al  Al12  1  0.522  0.186  0.447  1.0
  Al  Al13  1  0.703  0.938  0.464  1.0
  Al  Al14  1  0.062  0.297  0.536  1.0
  Al  Al15  1  0.478  0.814  0.553  1.0
  Al  Al16  1  0.297  0.062  0.536  1.0
  Al  Al17  1  0.999  0.497  0.235  1.0
  Al  Al18  1  0.810  0.457  0.058  1.0
  Al  Al19  1  0.938  0.703  0.464  1.0
  Al  Al20  1  0.438  0.669  0.353  1.0
  Al  Al21  1  0.668  0.434  0.845  1.0
  Al  Al22  1  0.497  0.999  0.235  1.0
  Al  Al23  1  0.503  0.001  0.765  1.0
  Al  Al24  1  0.954  0.728  0.949  1.0
  Al  Al25  1  0.149  0.799  0.362  1.0
  Al  Al26  1  0.799  0.149  0.362  1.0
  Al  Al27  1  0.086  0.086  0.815  1.0
  Al  Al28  1  0.566  0.332  0.155  1.0
  Al  Al29  1  0.914  0.914  0.185  1.0
  Al  Al30  1  0.046  0.272  0.051  1.0
  Al  Al31  1  0.851  0.201  0.638  1.0
  Al  Al32  1  0.728  0.954  0.949  1.0
  Al  Al33  1  0.829  0.171  0.000  1.0
  Al  Al34  1  0.457  0.810  0.058  1.0
  Al  Al35  1  0.332  0.566  0.155  1.0
  Al  Al36  1  0.190  0.543  0.942  1.0
  Al  Al37  1  0.814  0.478  0.553  1.0
  Al  Al38  1  0.562  0.331  0.647  1.0
  Al  Al39  1  0.669  0.438  0.353  1.0
  Al  Al40  1  0.080  0.080  0.362  1.0
  Al  Al41  1  0.201  0.851  0.638  1.0
  Co  Co42  1  0.561  0.561  0.595  1.0
  Co  Co43  1  0.439  0.439  0.905  1.0
  Co  Co44  1  0.080  0.680  0.188  1.0
  Co  Co45  1  0.439  0.439  0.405  1.0
  Co  Co46  1  0.084  0.686  0.670  1.0
  Co  Co47  1  0.920  0.320  0.812  1.0
  Co  Co48  1  0.561  0.561  0.095  1.0
  Co  Co49  1  0.680  0.080  0.188  1.0
  Co  Co50  1  0.686  0.084  0.670  1.0
  Co  Co51  1  0.916  0.314  0.330  1.0
  Co  Co52  1  0.320  0.920  0.812  1.0
  Co  Co53  1  0.314  0.916  0.330  1.0
[/CIF]
.
The material described by Pr2Co6Al19 crystallizes in the monoclinic C2/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 15-coordinate geometry to one Co(1), one Co(2), one Al(11), two equivalent Al(2), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. In the second Pr site, Pr(2) is bonded in a 15-coordinate geometry to one Co(1), one Co(2), one Al(3), two equivalent Al(2), two equivalent Al(4), two equivalent Al(5), two equivalent Al(6), two equivalent Al(8), and two equivalent Al(9) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 8-coordinate geometry to one Pr(1), one Pr(2), two equivalent Al(2), two equivalent Al(6), and four equivalent Al(7) atoms. In the second Co site, Co(2) is bonded in a 8-coordinate geometry to one Pr(1), one Pr(2), two equivalent Al(5), two equivalent Al(7), and four equivalent Al(6) atoms. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to one Al(1), one Al(10), one Al(11), one Al(2), one Al(4), one Al(5), one Al(6), one Al(8), and one Al(9) atom. In the fourth Co site, Co(4) is bonded in a 9-coordinate geometry to one Al(2), one Al(3), one Al(4), one Al(5), one Al(7), one Al(8), one Al(9), and two equivalent Al(10) atoms. There are eleven inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted linear geometry to two equivalent Co(3) atoms. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to one Pr(1), one Pr(2), one Co(1), one Co(3), one Co(4), one Al(10), one Al(6), one Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. In the third Al site, Al(3) is bonded in a distorted bent 150 degrees geometry to one Pr(2), two equivalent Co(4), and two equivalent Al(9) atoms. In the fourth Al site, Al(4) is bonded in a 2-coordinate geometry to one Pr(1), one Pr(2), one Co(3), and one Co(4) atom. In the fifth Al site, Al(5) is bonded in a 3-coordinate geometry to one Pr(1), one Pr(2), one Co(2), one Co(3), and one Co(4) atom. In the sixth Al site, Al(6) is bonded in a 4-coordinate geometry to one Pr(2), one Co(1), one Co(3), two equivalent Co(2), and one Al(2) atom. In the seventh Al site, Al(7) is bonded in a 4-coordinate geometry to one Pr(1), one Co(2), one Co(4), two equivalent Co(1), and one Al(2) atom. In the eighth Al site, Al(8) is bonded in a 2-coordinate geometry to one Pr(1), one Pr(2), one Co(3), one Co(4), two equivalent Al(2), and two equivalent Al(9) atoms. In the ninth Al site, Al(9) is bonded in a 12-coordinate geometry to one Pr(1), one Pr(2), one Co(3), one Co(4), one Al(10), one Al(11), one Al(3), one Al(9), two equivalent Al(2), and two equivalent Al(8) atoms. In the tenth Al site, Al(10) is bonded in a 3-coordinate geometry to one Co(3), two equivalent Co(4), one Al(2), and one Al(9) atom. In the eleventh Al site, Al(11) is bonded in a distorted bent 150 degrees geometry to one Pr(1), two equivalent Co(3), and two equivalent Al(9) atoms. is represented by the CIF file [CIF]
data_Pr2Al19Co6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.618
_cell_length_b   10.618
_cell_length_c   8.174
_cell_angle_alpha   78.433
_cell_angle_beta   78.433
_cell_angle_gamma   68.916
_symmetry_Int_Tables_number   1
_cell_volume   833.948
_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
  Pr  Pr0  1  0.721  0.721  0.255  1.0
  Pr  Pr1  1  0.279  0.279  0.745  1.0
  Pr  Pr2  1  0.720  0.720  0.773  1.0
  Pr  Pr3  1  0.280  0.280  0.227  1.0
  Al  Al4  1  0.171  0.829  0.000  1.0
  Al  Al5  1  0.186  0.522  0.447  1.0
  Al  Al6  1  0.920  0.920  0.638  1.0
  Al  Al7  1  0.272  0.046  0.051  1.0
  Al  Al8  1  0.543  0.190  0.942  1.0
  Al  Al9  1  0.434  0.668  0.845  1.0
  Al  Al10  1  0.331  0.562  0.647  1.0
  Al  Al11  1  0.001  0.503  0.765  1.0
  Al  Al12  1  0.522  0.186  0.447  1.0
  Al  Al13  1  0.703  0.938  0.464  1.0
  Al  Al14  1  0.062  0.297  0.536  1.0
  Al  Al15  1  0.478  0.814  0.553  1.0
  Al  Al16  1  0.297  0.062  0.536  1.0
  Al  Al17  1  0.999  0.497  0.235  1.0
  Al  Al18  1  0.810  0.457  0.058  1.0
  Al  Al19  1  0.938  0.703  0.464  1.0
  Al  Al20  1  0.438  0.669  0.353  1.0
  Al  Al21  1  0.668  0.434  0.845  1.0
  Al  Al22  1  0.497  0.999  0.235  1.0
  Al  Al23  1  0.503  0.001  0.765  1.0
  Al  Al24  1  0.954  0.728  0.949  1.0
  Al  Al25  1  0.149  0.799  0.362  1.0
  Al  Al26  1  0.799  0.149  0.362  1.0
  Al  Al27  1  0.086  0.086  0.815  1.0
  Al  Al28  1  0.566  0.332  0.155  1.0
  Al  Al29  1  0.914  0.914  0.185  1.0
  Al  Al30  1  0.046  0.272  0.051  1.0
  Al  Al31  1  0.851  0.201  0.638  1.0
  Al  Al32  1  0.728  0.954  0.949  1.0
  Al  Al33  1  0.829  0.171  0.000  1.0
  Al  Al34  1  0.457  0.810  0.058  1.0
  Al  Al35  1  0.332  0.566  0.155  1.0
  Al  Al36  1  0.190  0.543  0.942  1.0
  Al  Al37  1  0.814  0.478  0.553  1.0
  Al  Al38  1  0.562  0.331  0.647  1.0
  Al  Al39  1  0.669  0.438  0.353  1.0
  Al  Al40  1  0.080  0.080  0.362  1.0
  Al  Al41  1  0.201  0.851  0.638  1.0
  Co  Co42  1  0.561  0.561  0.595  1.0
  Co  Co43  1  0.439  0.439  0.905  1.0
  Co  Co44  1  0.080  0.680  0.188  1.0
  Co  Co45  1  0.439  0.439  0.405  1.0
  Co  Co46  1  0.084  0.686  0.670  1.0
  Co  Co47  1  0.920  0.320  0.812  1.0
  Co  Co48  1  0.561  0.561  0.095  1.0
  Co  Co49  1  0.680  0.080  0.188  1.0
  Co  Co50  1  0.686  0.084  0.670  1.0
  Co  Co51  1  0.916  0.314  0.330  1.0
  Co  Co52  1  0.320  0.920  0.812  1.0
  Co  Co53  1  0.314  0.916  0.330  1.0
[/CIF]
.