The compound described by Sm(CoAl4)2 crystallizes in the orthorhombic Pbam space group. Sm(1) is bonded in a 13-coordinate geometry to one Al(1), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Al(1), one Al(6), one Al(7), two equivalent Al(3), two equivalent Al(8), and two equivalent Al(9) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Al(7), two equivalent Al(2), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(6) atoms. There are nine inequivalent Al sites. In the first Al site, Al(9) is bonded in a 12-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), one Al(3), one Al(4), two equivalent Al(1), two equivalent Al(7), and two equivalent Al(8) atoms. In the second Al site, Al(1) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent Co(1), and four equivalent Al(9) atoms. In the third Al site, Al(2) is bonded in a 4-coordinate geometry to four equivalent Co(2) and two equivalent Al(5) atoms. In the fourth Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), one Al(5), and one Al(9) atom. In the fifth Al site, Al(4) is bonded in a 2-coordinate geometry to two equivalent Sm(1), two equivalent Co(2), one Al(5), and one Al(9) atom. In the sixth Al site, Al(5) is bonded in a 12-coordinate geometry to two equivalent Sm(1), two equivalent Co(2), one Al(2), one Al(3), one Al(4), one Al(8), two equivalent Al(6), and two equivalent Al(7) atoms. In the seventh Al site, Al(6) is bonded in a 3-coordinate geometry to one Co(1), two equivalent Co(2), and two equivalent Al(5) atoms. In the eighth Al site, Al(7) is bonded in a distorted linear geometry to two equivalent Sm(1), one Co(1), one Co(2), two equivalent Al(5), and two equivalent Al(9) atoms. In the ninth Al site, Al(8) is bonded in a 2-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), one Al(5), and two equivalent Al(9) atoms. is represented by the CIF card [CIF]
data_Sm(Al4Co)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.964
_cell_length_b   12.347
_cell_length_c   14.249
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   697.378
_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
  Sm  Sm0  1  0.000  0.840  0.182  1.0
  Sm  Sm1  1  0.000  0.160  0.818  1.0
  Sm  Sm2  1  0.000  0.340  0.318  1.0
  Sm  Sm3  1  0.000  0.660  0.682  1.0
  Al  Al4  1  0.000  0.500  0.500  1.0
  Al  Al5  1  0.000  0.000  0.000  1.0
  Al  Al6  1  0.500  0.500  0.000  1.0
  Al  Al7  1  0.500  0.000  0.500  1.0
  Al  Al8  1  0.500  0.736  0.328  1.0
  Al  Al9  1  0.500  0.264  0.672  1.0
  Al  Al10  1  0.500  0.236  0.172  1.0
  Al  Al11  1  0.500  0.764  0.828  1.0
  Al  Al12  1  0.500  0.953  0.321  1.0
  Al  Al13  1  0.500  0.047  0.679  1.0
  Al  Al14  1  0.500  0.453  0.179  1.0
  Al  Al15  1  0.500  0.547  0.821  1.0
  Al  Al16  1  0.500  0.659  0.121  1.0
  Al  Al17  1  0.500  0.341  0.879  1.0
  Al  Al18  1  0.500  0.159  0.379  1.0
  Al  Al19  1  0.500  0.841  0.621  1.0
  Al  Al20  1  0.000  0.841  0.456  1.0
  Al  Al21  1  0.000  0.159  0.544  1.0
  Al  Al22  1  0.000  0.341  0.044  1.0
  Al  Al23  1  0.000  0.659  0.956  1.0
  Al  Al24  1  0.000  0.596  0.248  1.0
  Al  Al25  1  0.000  0.404  0.752  1.0
  Al  Al26  1  0.000  0.096  0.252  1.0
  Al  Al27  1  0.000  0.904  0.748  1.0
  Al  Al28  1  0.500  0.831  0.008  1.0
  Al  Al29  1  0.500  0.169  0.992  1.0
  Al  Al30  1  0.500  0.331  0.492  1.0
  Al  Al31  1  0.500  0.669  0.508  1.0
  Al  Al32  1  0.500  0.526  0.368  1.0
  Al  Al33  1  0.500  0.474  0.632  1.0
  Al  Al34  1  0.500  0.026  0.132  1.0
  Al  Al35  1  0.500  0.974  0.868  1.0
  Co  Co36  1  0.000  0.652  0.404  1.0
  Co  Co37  1  0.000  0.348  0.596  1.0
  Co  Co38  1  0.000  0.152  0.096  1.0
  Co  Co39  1  0.000  0.848  0.904  1.0
  Co  Co40  1  0.000  0.534  0.095  1.0
  Co  Co41  1  0.000  0.466  0.905  1.0
  Co  Co42  1  0.000  0.034  0.405  1.0
  Co  Co43  1  0.000  0.966  0.595  1.0
[/CIF]
.
The compound described by Sm(CoAl4)2 crystallizes in the orthorhombic Pbam space group. Sm(1) is bonded in a 13-coordinate geometry to one Al(1), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Al(1), one Al(6), one Al(7), two equivalent Al(3), two equivalent Al(8), and two equivalent Al(9) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Al(7), two equivalent Al(2), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(6) atoms. There are nine inequivalent Al sites. In the first Al site, Al(9) is bonded in a 12-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), one Al(3), one Al(4), two equivalent Al(1), two equivalent Al(7), and two equivalent Al(8) atoms. In the second Al site, Al(1) is bonded in a distorted linear geometry to two equivalent Sm(1), two equivalent Co(1), and four equivalent Al(9) atoms. In the third Al site, Al(2) is bonded in a 4-coordinate geometry to four equivalent Co(2) and two equivalent Al(5) atoms. In the fourth Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), one Al(5), and one Al(9) atom. In the fifth Al site, Al(4) is bonded in a 2-coordinate geometry to two equivalent Sm(1), two equivalent Co(2), one Al(5), and one Al(9) atom. In the sixth Al site, Al(5) is bonded in a 12-coordinate geometry to two equivalent Sm(1), two equivalent Co(2), one Al(2), one Al(3), one Al(4), one Al(8), two equivalent Al(6), and two equivalent Al(7) atoms. In the seventh Al site, Al(6) is bonded in a 3-coordinate geometry to one Co(1), two equivalent Co(2), and two equivalent Al(5) atoms. In the eighth Al site, Al(7) is bonded in a distorted linear geometry to two equivalent Sm(1), one Co(1), one Co(2), two equivalent Al(5), and two equivalent Al(9) atoms. In the ninth Al site, Al(8) is bonded in a 2-coordinate geometry to two equivalent Sm(1), two equivalent Co(1), one Al(5), and two equivalent Al(9) atoms. is represented by the CIF card [CIF]
data_Sm(Al4Co)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.964
_cell_length_b   12.347
_cell_length_c   14.249
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   697.378
_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
  Sm  Sm0  1  0.000  0.840  0.182  1.0
  Sm  Sm1  1  0.000  0.160  0.818  1.0
  Sm  Sm2  1  0.000  0.340  0.318  1.0
  Sm  Sm3  1  0.000  0.660  0.682  1.0
  Al  Al4  1  0.000  0.500  0.500  1.0
  Al  Al5  1  0.000  0.000  0.000  1.0
  Al  Al6  1  0.500  0.500  0.000  1.0
  Al  Al7  1  0.500  0.000  0.500  1.0
  Al  Al8  1  0.500  0.736  0.328  1.0
  Al  Al9  1  0.500  0.264  0.672  1.0
  Al  Al10  1  0.500  0.236  0.172  1.0
  Al  Al11  1  0.500  0.764  0.828  1.0
  Al  Al12  1  0.500  0.953  0.321  1.0
  Al  Al13  1  0.500  0.047  0.679  1.0
  Al  Al14  1  0.500  0.453  0.179  1.0
  Al  Al15  1  0.500  0.547  0.821  1.0
  Al  Al16  1  0.500  0.659  0.121  1.0
  Al  Al17  1  0.500  0.341  0.879  1.0
  Al  Al18  1  0.500  0.159  0.379  1.0
  Al  Al19  1  0.500  0.841  0.621  1.0
  Al  Al20  1  0.000  0.841  0.456  1.0
  Al  Al21  1  0.000  0.159  0.544  1.0
  Al  Al22  1  0.000  0.341  0.044  1.0
  Al  Al23  1  0.000  0.659  0.956  1.0
  Al  Al24  1  0.000  0.596  0.248  1.0
  Al  Al25  1  0.000  0.404  0.752  1.0
  Al  Al26  1  0.000  0.096  0.252  1.0
  Al  Al27  1  0.000  0.904  0.748  1.0
  Al  Al28  1  0.500  0.831  0.008  1.0
  Al  Al29  1  0.500  0.169  0.992  1.0
  Al  Al30  1  0.500  0.331  0.492  1.0
  Al  Al31  1  0.500  0.669  0.508  1.0
  Al  Al32  1  0.500  0.526  0.368  1.0
  Al  Al33  1  0.500  0.474  0.632  1.0
  Al  Al34  1  0.500  0.026  0.132  1.0
  Al  Al35  1  0.500  0.974  0.868  1.0
  Co  Co36  1  0.000  0.652  0.404  1.0
  Co  Co37  1  0.000  0.348  0.596  1.0
  Co  Co38  1  0.000  0.152  0.096  1.0
  Co  Co39  1  0.000  0.848  0.904  1.0
  Co  Co40  1  0.000  0.534  0.095  1.0
  Co  Co41  1  0.000  0.466  0.905  1.0
  Co  Co42  1  0.000  0.034  0.405  1.0
  Co  Co43  1  0.000  0.966  0.595  1.0
[/CIF]
.