The crystal structure described by LaRhAl crystallizes in the orthorhombic Pnma space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 5-coordinate geometry to one Rh(2) and four equivalent Rh(1) atoms. In the second La site, La(2) is bonded in a 2-coordinate geometry to two equivalent Rh(1) and three equivalent Rh(2) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 9-coordinate geometry to two equivalent La(2), four equivalent La(1), one Al(2), and two equivalent Al(1) atoms. In the second Rh site, Rh(2) is bonded in a 9-coordinate geometry to one La(1), three equivalent La(2), two equivalent Al(1), and three equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 4-coordinate geometry to two equivalent Rh(1) and two equivalent Rh(2) atoms. In the second Al site, Al(2) is bonded to one Rh(1) and three equivalent Rh(2) atoms to form a mixture of distorted edge and corner-sharing AlRh4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaAlRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.273
_cell_length_b   7.281
_cell_length_c   16.159
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   502.781
_cell_formula_units_Z   8
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  0.250  0.516  0.781  1.0
  La  La1  1  0.750  0.484  0.219  1.0
  La  La2  1  0.750  0.984  0.281  1.0
  La  La3  1  0.250  0.016  0.719  1.0
  La  La4  1  0.250  0.655  0.561  1.0
  La  La5  1  0.750  0.345  0.439  1.0
  La  La6  1  0.750  0.845  0.061  1.0
  La  La7  1  0.250  0.155  0.939  1.0
  Al  Al8  1  0.250  0.657  0.353  1.0
  Al  Al9  1  0.750  0.343  0.647  1.0
  Al  Al10  1  0.750  0.843  0.853  1.0
  Al  Al11  1  0.250  0.157  0.147  1.0
  Al  Al12  1  0.250  0.507  0.059  1.0
  Al  Al13  1  0.750  0.493  0.941  1.0
  Al  Al14  1  0.750  0.993  0.559  1.0
  Al  Al15  1  0.250  0.007  0.441  1.0
  Rh  Rh16  1  0.250  0.778  0.178  1.0
  Rh  Rh17  1  0.750  0.222  0.822  1.0
  Rh  Rh18  1  0.750  0.722  0.678  1.0
  Rh  Rh19  1  0.250  0.278  0.322  1.0
  Rh  Rh20  1  0.250  0.712  0.926  1.0
  Rh  Rh21  1  0.750  0.288  0.074  1.0
  Rh  Rh22  1  0.750  0.788  0.426  1.0
  Rh  Rh23  1  0.250  0.212  0.574  1.0
[/CIF]
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The crystal structure described by LaRhAl crystallizes in the orthorhombic Pnma space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 5-coordinate geometry to one Rh(2) and four equivalent Rh(1) atoms. In the second La site, La(2) is bonded in a 2-coordinate geometry to two equivalent Rh(1) and three equivalent Rh(2) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 9-coordinate geometry to two equivalent La(2), four equivalent La(1), one Al(2), and two equivalent Al(1) atoms. In the second Rh site, Rh(2) is bonded in a 9-coordinate geometry to one La(1), three equivalent La(2), two equivalent Al(1), and three equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 4-coordinate geometry to two equivalent Rh(1) and two equivalent Rh(2) atoms. In the second Al site, Al(2) is bonded to one Rh(1) and three equivalent Rh(2) atoms to form a mixture of distorted edge and corner-sharing AlRh4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaAlRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.273
_cell_length_b   7.281
_cell_length_c   16.159
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   502.781
_cell_formula_units_Z   8
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  0.250  0.516  0.781  1.0
  La  La1  1  0.750  0.484  0.219  1.0
  La  La2  1  0.750  0.984  0.281  1.0
  La  La3  1  0.250  0.016  0.719  1.0
  La  La4  1  0.250  0.655  0.561  1.0
  La  La5  1  0.750  0.345  0.439  1.0
  La  La6  1  0.750  0.845  0.061  1.0
  La  La7  1  0.250  0.155  0.939  1.0
  Al  Al8  1  0.250  0.657  0.353  1.0
  Al  Al9  1  0.750  0.343  0.647  1.0
  Al  Al10  1  0.750  0.843  0.853  1.0
  Al  Al11  1  0.250  0.157  0.147  1.0
  Al  Al12  1  0.250  0.507  0.059  1.0
  Al  Al13  1  0.750  0.493  0.941  1.0
  Al  Al14  1  0.750  0.993  0.559  1.0
  Al  Al15  1  0.250  0.007  0.441  1.0
  Rh  Rh16  1  0.250  0.778  0.178  1.0
  Rh  Rh17  1  0.750  0.222  0.822  1.0
  Rh  Rh18  1  0.750  0.722  0.678  1.0
  Rh  Rh19  1  0.250  0.278  0.322  1.0
  Rh  Rh20  1  0.250  0.712  0.926  1.0
  Rh  Rh21  1  0.750  0.288  0.074  1.0
  Rh  Rh22  1  0.750  0.788  0.426  1.0
  Rh  Rh23  1  0.250  0.212  0.574  1.0
[/CIF]
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