The compound described by SmLa(NiO3)2 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4/mmm space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to four equivalent O(1) and eight equivalent O(4) atoms to form SmO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, corners with eight equivalent Sm(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the second Sm site, Sm(2) is bonded to four equivalent O(2), four equivalent O(3), and four equivalent O(4) atoms to form SmO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent Sm(2)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Sm(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the third Sm site, Sm(3) is bonded to four equivalent O(2) and eight equivalent O(3) atoms to form SmO12 cuboctahedra that share corners with four equivalent La(3)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with four equivalent Sm(2)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. There are three inequivalent La sites. In the first La site, La(1) is bonded to four equivalent O(1), four equivalent O(3), and four equivalent O(4) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(3)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Sm(2)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the second La site, La(2) is bonded to four equivalent O(1) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with eight equivalent Sm(2)O12 cuboctahedra, faces with two equivalent Sm(3)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the third La site, La(3) is bonded to four equivalent O(2) and eight equivalent O(4) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(3)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with four equivalent Sm(2)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. Ni(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with six equivalent Ni(1)O6 octahedra,  a faceface with one Sm(1)O12 cuboctahedra,  a faceface with one Sm(3)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with two equivalent Sm(2)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Sm(1), one La(2), two equivalent La(1), and two equivalent Ni(1) atoms to form distorted OLa3SmNi2 octahedra that share corners with four equivalent O(1)La3SmNi2 octahedra, corners with eight equivalent O(3)La2Sm2Ni2 octahedra, corners with eight equivalent O(4)La2Sm2Ni2 octahedra, edges with four equivalent O(1)La3SmNi2 octahedra, faces with four equivalent O(3)La2Sm2Ni2 octahedra, and faces with four equivalent O(4)La2Sm2Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the second O site, O(2) is bonded in a distorted linear geometry to one Sm(3), two equivalent Sm(2), one La(3), and two equivalent Ni(1) atoms. In the third O site, O(3) is bonded to one Sm(2), one Sm(3), one La(1), one La(2), and two equivalent Ni(1) atoms to form distorted OLa2Sm2Ni2 octahedra that share corners with four equivalent O(1)La3SmNi2 octahedra, corners with six equivalent O(4)La2Sm2Ni2 octahedra, corners with eight equivalent O(3)La2Sm2Ni2 octahedra, edges with four equivalent O(3)La2Sm2Ni2 octahedra, faces with two equivalent O(3)La2Sm2Ni2 octahedra, faces with two equivalent O(4)La2Sm2Ni2 octahedra, and faces with two equivalent O(1)La3SmNi2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fourth O site, O(4) is bonded to one Sm(1), one Sm(2), one La(1), one La(3), and two equivalent Ni(1) atoms to form distorted OLa2Sm2Ni2 octahedra that share corners with four equivalent O(1)La3SmNi2 octahedra, corners with six equivalent O(3)La2Sm2Ni2 octahedra, corners with eight equivalent O(4)La2Sm2Ni2 octahedra, edges with four equivalent O(4)La2Sm2Ni2 octahedra, faces with two equivalent O(3)La2Sm2Ni2 octahedra, faces with two equivalent O(4)La2Sm2Ni2 octahedra, and faces with two equivalent O(1)La3SmNi2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaSm(NiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.651
_cell_length_b   7.651
_cell_length_c   7.653
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   447.978
_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
  La  La0  1  0.500  0.000  0.000  1.0
  La  La1  1  0.500  0.500  0.000  1.0
  La  La2  1  0.000  0.500  0.000  1.0
  La  La3  1  0.000  0.000  0.500  1.0
  Sm  Sm4  1  0.000  0.000  0.000  1.0
  Sm  Sm5  1  0.500  0.000  0.500  1.0
  Sm  Sm6  1  0.500  0.500  0.500  1.0
  Sm  Sm7  1  0.000  0.500  0.500  1.0
  Ni  Ni8  1  0.250  0.750  0.749  1.0
  Ni  Ni9  1  0.250  0.250  0.749  1.0
  Ni  Ni10  1  0.750  0.750  0.749  1.0
  Ni  Ni11  1  0.750  0.250  0.749  1.0
  Ni  Ni12  1  0.250  0.750  0.251  1.0
  Ni  Ni13  1  0.250  0.250  0.251  1.0
  Ni  Ni14  1  0.750  0.750  0.251  1.0
  Ni  Ni15  1  0.750  0.250  0.251  1.0
  O  O16  1  0.248  0.752  0.000  1.0
  O  O17  1  0.248  0.248  0.000  1.0
  O  O18  1  0.752  0.752  0.000  1.0
  O  O19  1  0.752  0.248  0.000  1.0
  O  O20  1  0.252  0.748  0.500  1.0
  O  O21  1  0.252  0.252  0.500  1.0
  O  O22  1  0.748  0.748  0.500  1.0
  O  O23  1  0.748  0.252  0.500  1.0
  O  O24  1  0.500  0.750  0.744  1.0
  O  O25  1  0.500  0.250  0.744  1.0
  O  O26  1  0.000  0.750  0.749  1.0
  O  O27  1  0.000  0.250  0.749  1.0
  O  O28  1  0.500  0.750  0.256  1.0
  O  O29  1  0.500  0.250  0.256  1.0
  O  O30  1  0.000  0.750  0.251  1.0
  O  O31  1  0.000  0.250  0.251  1.0
  O  O32  1  0.250  0.000  0.749  1.0
  O  O33  1  0.250  0.500  0.744  1.0
  O  O34  1  0.750  0.000  0.749  1.0
  O  O35  1  0.750  0.500  0.744  1.0
  O  O36  1  0.250  0.000  0.251  1.0
  O  O37  1  0.250  0.500  0.256  1.0
  O  O38  1  0.750  0.000  0.251  1.0
  O  O39  1  0.750  0.500  0.256  1.0
[/CIF]
.
The compound described by SmLa(NiO3)2 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4/mmm space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to four equivalent O(1) and eight equivalent O(4) atoms to form SmO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, corners with eight equivalent Sm(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the second Sm site, Sm(2) is bonded to four equivalent O(2), four equivalent O(3), and four equivalent O(4) atoms to form SmO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with four equivalent Sm(2)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Sm(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the third Sm site, Sm(3) is bonded to four equivalent O(2) and eight equivalent O(3) atoms to form SmO12 cuboctahedra that share corners with four equivalent La(3)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with four equivalent Sm(2)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. There are three inequivalent La sites. In the first La site, La(1) is bonded to four equivalent O(1), four equivalent O(3), and four equivalent O(4) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(3)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with two equivalent Sm(2)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the second La site, La(2) is bonded to four equivalent O(1) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(1)O12 cuboctahedra, corners with eight equivalent Sm(2)O12 cuboctahedra, faces with two equivalent Sm(3)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. In the third La site, La(3) is bonded to four equivalent O(2) and eight equivalent O(4) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sm(3)O12 cuboctahedra, corners with eight equivalent La(1)O12 cuboctahedra, faces with two equivalent Sm(1)O12 cuboctahedra, faces with four equivalent Sm(2)O12 cuboctahedra, and faces with eight equivalent Ni(1)O6 octahedra. Ni(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with six equivalent Ni(1)O6 octahedra,  a faceface with one Sm(1)O12 cuboctahedra,  a faceface with one Sm(3)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with two equivalent Sm(2)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Sm(1), one La(2), two equivalent La(1), and two equivalent Ni(1) atoms to form distorted OLa3SmNi2 octahedra that share corners with four equivalent O(1)La3SmNi2 octahedra, corners with eight equivalent O(3)La2Sm2Ni2 octahedra, corners with eight equivalent O(4)La2Sm2Ni2 octahedra, edges with four equivalent O(1)La3SmNi2 octahedra, faces with four equivalent O(3)La2Sm2Ni2 octahedra, and faces with four equivalent O(4)La2Sm2Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the second O site, O(2) is bonded in a distorted linear geometry to one Sm(3), two equivalent Sm(2), one La(3), and two equivalent Ni(1) atoms. In the third O site, O(3) is bonded to one Sm(2), one Sm(3), one La(1), one La(2), and two equivalent Ni(1) atoms to form distorted OLa2Sm2Ni2 octahedra that share corners with four equivalent O(1)La3SmNi2 octahedra, corners with six equivalent O(4)La2Sm2Ni2 octahedra, corners with eight equivalent O(3)La2Sm2Ni2 octahedra, edges with four equivalent O(3)La2Sm2Ni2 octahedra, faces with two equivalent O(3)La2Sm2Ni2 octahedra, faces with two equivalent O(4)La2Sm2Ni2 octahedra, and faces with two equivalent O(1)La3SmNi2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fourth O site, O(4) is bonded to one Sm(1), one Sm(2), one La(1), one La(3), and two equivalent Ni(1) atoms to form distorted OLa2Sm2Ni2 octahedra that share corners with four equivalent O(1)La3SmNi2 octahedra, corners with six equivalent O(3)La2Sm2Ni2 octahedra, corners with eight equivalent O(4)La2Sm2Ni2 octahedra, edges with four equivalent O(4)La2Sm2Ni2 octahedra, faces with two equivalent O(3)La2Sm2Ni2 octahedra, faces with two equivalent O(4)La2Sm2Ni2 octahedra, and faces with two equivalent O(1)La3SmNi2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. is represented by the Crystallographic Information File (CIF) [CIF]
data_LaSm(NiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.651
_cell_length_b   7.651
_cell_length_c   7.653
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   447.978
_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
  La  La0  1  0.500  0.000  0.000  1.0
  La  La1  1  0.500  0.500  0.000  1.0
  La  La2  1  0.000  0.500  0.000  1.0
  La  La3  1  0.000  0.000  0.500  1.0
  Sm  Sm4  1  0.000  0.000  0.000  1.0
  Sm  Sm5  1  0.500  0.000  0.500  1.0
  Sm  Sm6  1  0.500  0.500  0.500  1.0
  Sm  Sm7  1  0.000  0.500  0.500  1.0
  Ni  Ni8  1  0.250  0.750  0.749  1.0
  Ni  Ni9  1  0.250  0.250  0.749  1.0
  Ni  Ni10  1  0.750  0.750  0.749  1.0
  Ni  Ni11  1  0.750  0.250  0.749  1.0
  Ni  Ni12  1  0.250  0.750  0.251  1.0
  Ni  Ni13  1  0.250  0.250  0.251  1.0
  Ni  Ni14  1  0.750  0.750  0.251  1.0
  Ni  Ni15  1  0.750  0.250  0.251  1.0
  O  O16  1  0.248  0.752  0.000  1.0
  O  O17  1  0.248  0.248  0.000  1.0
  O  O18  1  0.752  0.752  0.000  1.0
  O  O19  1  0.752  0.248  0.000  1.0
  O  O20  1  0.252  0.748  0.500  1.0
  O  O21  1  0.252  0.252  0.500  1.0
  O  O22  1  0.748  0.748  0.500  1.0
  O  O23  1  0.748  0.252  0.500  1.0
  O  O24  1  0.500  0.750  0.744  1.0
  O  O25  1  0.500  0.250  0.744  1.0
  O  O26  1  0.000  0.750  0.749  1.0
  O  O27  1  0.000  0.250  0.749  1.0
  O  O28  1  0.500  0.750  0.256  1.0
  O  O29  1  0.500  0.250  0.256  1.0
  O  O30  1  0.000  0.750  0.251  1.0
  O  O31  1  0.000  0.250  0.251  1.0
  O  O32  1  0.250  0.000  0.749  1.0
  O  O33  1  0.250  0.500  0.744  1.0
  O  O34  1  0.750  0.000  0.749  1.0
  O  O35  1  0.750  0.500  0.744  1.0
  O  O36  1  0.250  0.000  0.251  1.0
  O  O37  1  0.250  0.500  0.256  1.0
  O  O38  1  0.750  0.000  0.251  1.0
  O  O39  1  0.750  0.500  0.256  1.0
[/CIF]
.