The crystal structure described by La5Ni2Al3 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to two equivalent Ni(1), two equivalent Al(1), and three equivalent Al(2) atoms. In the second La site, La(2) is bonded in a 3-coordinate geometry to one Al(1) and four equivalent Al(2) atoms. In the third La site, La(3) is bonded in a 2-coordinate geometry to two equivalent Ni(1) and four equivalent Al(2) atoms. Ni(1) is bonded in a 6-coordinate geometry to one La(3), two equivalent La(1), one Al(1), and two equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent La(2), four equivalent La(1), and two equivalent Ni(1) atoms. In the second Al site, Al(2) is bonded in a 11-coordinate geometry to two equivalent La(3), three equivalent La(1), four equivalent La(2), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_La5Al3Ni2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.920
_cell_length_b   7.920
_cell_length_c   10.425
_cell_angle_alpha   90.002
_cell_angle_beta   90.002
_cell_angle_gamma   128.474
_symmetry_Int_Tables_number   1
_cell_volume   511.995
_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
  La  La0  1  0.875  0.125  0.000  1.0
  La  La1  1  0.472  0.038  0.250  1.0
  La  La2  1  0.125  0.875  0.500  1.0
  La  La3  1  0.125  0.875  0.000  1.0
  La  La4  1  0.528  0.962  0.750  1.0
  La  La5  1  0.875  0.125  0.500  1.0
  La  La6  1  0.394  0.394  0.750  1.0
  La  La7  1  0.962  0.528  0.750  1.0
  La  La8  1  0.039  0.472  0.250  1.0
  La  La9  1  0.606  0.606  0.250  1.0
  Al  Al10  1  0.879  0.879  0.750  1.0
  Al  Al11  1  0.354  0.646  1.000  1.0
  Al  Al12  1  0.354  0.646  0.500  1.0
  Al  Al13  1  0.121  0.121  0.250  1.0
  Al  Al14  1  0.646  0.354  1.000  1.0
  Al  Al15  1  0.646  0.354  0.500  1.0
  Ni  Ni16  1  0.670  0.670  0.561  1.0
  Ni  Ni17  1  0.670  0.670  0.939  1.0
  Ni  Ni18  1  0.330  0.330  0.061  1.0
  Ni  Ni19  1  0.330  0.330  0.439  1.0
[/CIF]
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The crystal structure described by La5Ni2Al3 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to two equivalent Ni(1), two equivalent Al(1), and three equivalent Al(2) atoms. In the second La site, La(2) is bonded in a 3-coordinate geometry to one Al(1) and four equivalent Al(2) atoms. In the third La site, La(3) is bonded in a 2-coordinate geometry to two equivalent Ni(1) and four equivalent Al(2) atoms. Ni(1) is bonded in a 6-coordinate geometry to one La(3), two equivalent La(1), one Al(1), and two equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent La(2), four equivalent La(1), and two equivalent Ni(1) atoms. In the second Al site, Al(2) is bonded in a 11-coordinate geometry to two equivalent La(3), three equivalent La(1), four equivalent La(2), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_La5Al3Ni2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.920
_cell_length_b   7.920
_cell_length_c   10.425
_cell_angle_alpha   90.002
_cell_angle_beta   90.002
_cell_angle_gamma   128.474
_symmetry_Int_Tables_number   1
_cell_volume   511.995
_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
  La  La0  1  0.875  0.125  0.000  1.0
  La  La1  1  0.472  0.038  0.250  1.0
  La  La2  1  0.125  0.875  0.500  1.0
  La  La3  1  0.125  0.875  0.000  1.0
  La  La4  1  0.528  0.962  0.750  1.0
  La  La5  1  0.875  0.125  0.500  1.0
  La  La6  1  0.394  0.394  0.750  1.0
  La  La7  1  0.962  0.528  0.750  1.0
  La  La8  1  0.039  0.472  0.250  1.0
  La  La9  1  0.606  0.606  0.250  1.0
  Al  Al10  1  0.879  0.879  0.750  1.0
  Al  Al11  1  0.354  0.646  1.000  1.0
  Al  Al12  1  0.354  0.646  0.500  1.0
  Al  Al13  1  0.121  0.121  0.250  1.0
  Al  Al14  1  0.646  0.354  1.000  1.0
  Al  Al15  1  0.646  0.354  0.500  1.0
  Ni  Ni16  1  0.670  0.670  0.561  1.0
  Ni  Ni17  1  0.670  0.670  0.939  1.0
  Ni  Ni18  1  0.330  0.330  0.061  1.0
  Ni  Ni19  1  0.330  0.330  0.439  1.0
[/CIF]
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