The material described by Sm3LaO6 crystallizes in the monoclinic Cm space group. There are nine inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 7-coordinate geometry to one O(12), one O(14), one O(8), two equivalent O(18), and two equivalent O(5) atoms. In the second Sm site, Sm(2) is bonded in a 6-coordinate geometry to one O(15), one O(5), two equivalent O(1), and two equivalent O(14) atoms. In the third Sm site, Sm(3) is bonded in a 6-coordinate geometry to one O(16), one O(6), two equivalent O(13), and two equivalent O(2) atoms. In the fourth Sm site, Sm(4) is bonded in a 6-coordinate geometry to one O(17), one O(7), two equivalent O(13), and two equivalent O(3) atoms. In the fifth Sm site, Sm(5) is bonded to one O(18), one O(8), two equivalent O(14), and two equivalent O(4) atoms to form distorted edge-sharing SmO6 octahedra. In the sixth Sm site, Sm(6) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(9), two equivalent O(11), and two equivalent O(15) atoms. In the seventh Sm site, Sm(7) is bonded in a 7-coordinate geometry to one O(10), one O(2), one O(4), two equivalent O(12), and two equivalent O(16) atoms. In the eighth Sm site, Sm(8) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(3), two equivalent O(17), and two equivalent O(9) atoms. In the ninth Sm site, Sm(9) is bonded in a 7-coordinate geometry to one O(12), one O(2), one O(4), two equivalent O(10), and two equivalent O(18) atoms. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(14), one O(5), one O(9), two equivalent O(15), and two equivalent O(8) atoms. In the second La site, La(2) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(6), two equivalent O(16), and two equivalent O(7) atoms. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(7), two equivalent O(17), and two equivalent O(6) atoms. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to one Sm(6), one Sm(8), and two equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with two equivalent O(14)LaSm5 octahedra, corners with two equivalent O(17)La2Sm3 square pyramids, corners with two equivalent O(5)LaSm3 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra,  an edgeedge with one O(14)LaSm5 octahedra, edges with two equivalent O(15)La2Sm3 square pyramids, and  an edgeedge with one O(3)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the second O site, O(2) is bonded to one Sm(7), one Sm(9), and two equivalent Sm(3) atoms to form OSm4 tetrahedra that share corners with two equivalent O(13)La2Sm4 octahedra, corners with two equivalent O(18)Sm5 square pyramids, corners with two equivalent O(6)La3Sm tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra,  an edgeedge with one O(13)La2Sm4 octahedra, edges with two equivalent O(16)La2Sm3 square pyramids, and  an edgeedge with one O(4)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the third O site, O(3) is bonded to one Sm(6), one Sm(8), and two equivalent Sm(4) atoms to form OSm4 tetrahedra that share corners with two equivalent O(13)La2Sm4 octahedra, corners with two equivalent O(15)La2Sm3 square pyramids, corners with two equivalent O(7)La3Sm tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra,  an edgeedge with one O(13)La2Sm4 octahedra, edges with two equivalent O(17)La2Sm3 square pyramids, and  an edgeedge with one O(1)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the fourth O site, O(4) is bonded to one Sm(7), one Sm(9), and two equivalent Sm(5) atoms to form OSm4 tetrahedra that share corners with two equivalent O(14)LaSm5 octahedra, corners with two equivalent O(16)La2Sm3 square pyramids, corners with two equivalent O(8)La2Sm2 tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra,  an edgeedge with one O(14)LaSm5 octahedra, edges with two equivalent O(18)Sm5 square pyramids, and  an edgeedge with one O(2)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the fifth O site, O(5) is bonded to one Sm(2), two equivalent Sm(1), and one La(1) atom to form OLaSm3 tetrahedra that share  a cornercorner with one O(14)LaSm5 octahedra, corners with two equivalent O(18)Sm5 square pyramids, corners with three equivalent O(15)La2Sm3 square pyramids, corners with two equivalent O(5)LaSm3 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra,  an edgeedge with one O(18)Sm5 square pyramid, and edges with two equivalent O(8)La2Sm2 tetrahedra. The corner-sharing octahedral tilt angles are 51°. In the sixth O site, O(6) is bonded to one Sm(3), one La(2), and two equivalent La(3) atoms to form OLa3Sm tetrahedra that share  a cornercorner with one O(13)La2Sm4 octahedra, corners with two equivalent O(17)La2Sm3 square pyramids, corners with three equivalent O(16)La2Sm3 square pyramids, corners with two equivalent O(6)La3Sm tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra,  an edgeedge with one O(17)La2Sm3 square pyramid, and edges with two equivalent O(7)La3Sm tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the seventh O site, O(7) is bonded to one Sm(4), one La(3), and two equivalent La(2) atoms to form OLa3Sm tetrahedra that share  a cornercorner with one O(13)La2Sm4 octahedra, corners with two equivalent O(16)La2Sm3 square pyramids, corners with three equivalent O(17)La2Sm3 square pyramids, corners with two equivalent O(7)La3Sm tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra,  an edgeedge with one O(16)La2Sm3 square pyramid, and edges with two equivalent O(6)La3Sm tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the eighth O site, O(8) is bonded to one Sm(1), one Sm(5), and two equivalent La(1) atoms to form OLa2Sm2 tetrahedra that share  a cornercorner with one O(14)LaSm5 octahedra, corners with two equivalent O(15)La2Sm3 square pyramids, corners with three equivalent O(18)Sm5 square pyramids, corners with two equivalent O(8)La2Sm2 tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra,  an edgeedge with one O(15)La2Sm3 square pyramid, and edges with two equivalent O(5)LaSm3 tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sm(6), two equivalent Sm(8), and one La(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sm(7), two equivalent Sm(9), and one La(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sm(8), two equivalent Sm(6), and one La(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(9), and two equivalent Sm(7) atoms. In the thirteenth O site, O(13) is bonded to two equivalent Sm(3), two equivalent Sm(4), one La(2), and one La(3) atom to form OLa2Sm4 octahedra that share  a cornercorner with one O(6)La3Sm tetrahedra,  a cornercorner with one O(7)La3Sm tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra, edges with two equivalent O(16)La2Sm3 square pyramids, edges with two equivalent O(17)La2Sm3 square pyramids,  an edgeedge with one O(2)Sm4 tetrahedra,  an edgeedge with one O(3)Sm4 tetrahedra, edges with two equivalent O(6)La3Sm tetrahedra, and edges with two equivalent O(7)La3Sm tetrahedra. In the fourteenth O site, O(14) is bonded to one Sm(1), two equivalent Sm(2), two equivalent Sm(5), and one La(1) atom to form OLaSm5 octahedra that share  a cornercorner with one O(8)La2Sm2 tetrahedra,  a cornercorner with one O(5)LaSm3 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra, edges with two equivalent O(15)La2Sm3 square pyramids, edges with two equivalent O(18)Sm5 square pyramids,  an edgeedge with one O(1)Sm4 tetrahedra,  an edgeedge with one O(4)Sm4 tetrahedra, edges with two equivalent O(8)La2Sm2 tetrahedra, and edges with two equivalent O(5)LaSm3 tetrahedra. In the fifteenth O site, O(15) is bonded to one Sm(2), two equivalent Sm(6), and two equivalent La(1) atoms to form distorted OLa2Sm3 square pyramids that share corners with two equivalent O(8)La2Sm2 tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra, corners with three equivalent O(5)LaSm3 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra, edges with two equivalent O(15)La2Sm3 square pyramids,  an edgeedge with one O(8)La2Sm2 tetrahedra, and edges with two equivalent O(1)Sm4 tetrahedra. In the sixteenth O site, O(16) is bonded to one Sm(3), two equivalent Sm(7), and two equivalent La(2) atoms to form distorted OLa2Sm3 square pyramids that share corners with two equivalent O(7)La3Sm tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra, corners with three equivalent O(6)La3Sm tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra, edges with two equivalent O(16)La2Sm3 square pyramids,  an edgeedge with one O(7)La3Sm tetrahedra, and edges with two equivalent O(2)Sm4 tetrahedra. In the seventeenth O site, O(17) is bonded to one Sm(4), two equivalent Sm(8), and two equivalent La(3) atoms to form distorted OLa2Sm3 square pyramids that share corners with two equivalent O(6)La3Sm tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, corners with three equivalent O(7)La3Sm tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra, edges with two equivalent O(17)La2Sm3 square pyramids,  an edgeedge with one O(6)La3Sm tetrahedra, and edges with two equivalent O(3)Sm4 tetrahedra. In the eighteenth O site, O(18) is bonded to one Sm(5), two equivalent Sm(1), and two equivalent Sm(9) atoms to form distorted OSm5 square pyramids that share corners with two equivalent O(5)LaSm3 tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra, corners with three equivalent O(8)La2Sm2 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra, edges with two equivalent O(18)Sm5 square pyramids,  an edgeedge with one O(5)LaSm3 tetrahedra, and edges with two equivalent O(4)Sm4 tetrahedra. is represented by the CIF file [CIF]
data_LaSm3O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.490
_cell_length_b   7.490
_cell_length_c   18.058
_cell_angle_alpha   79.752
_cell_angle_beta   79.752
_cell_angle_gamma   28.393
_symmetry_Int_Tables_number   1
_cell_volume   473.513
_cell_formula_units_Z   3
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  0.310  0.310  0.069  1.0
  La  La1  1  0.311  0.311  0.570  1.0
  La  La2  1  0.689  0.689  0.430  1.0
  Sm  Sm3  1  0.690  0.690  0.931  1.0
  Sm  Sm4  1  0.034  0.034  0.094  1.0
  Sm  Sm5  1  0.033  0.033  0.595  1.0
  Sm  Sm6  1  0.967  0.967  0.405  1.0
  Sm  Sm7  1  0.968  0.968  0.906  1.0
  Sm  Sm8  1  0.367  0.367  0.245  1.0
  Sm  Sm9  1  0.366  0.366  0.746  1.0
  Sm  Sm10  1  0.633  0.633  0.255  1.0
  Sm  Sm11  1  0.634  0.634  0.756  1.0
  O  O12  1  0.529  0.529  0.171  1.0
  O  O13  1  0.529  0.529  0.672  1.0
  O  O14  1  0.471  0.471  0.328  1.0
  O  O15  1  0.472  0.472  0.829  1.0
  O  O16  1  0.174  0.174  0.012  1.0
  O  O17  1  0.174  0.174  0.515  1.0
  O  O18  1  0.826  0.826  0.485  1.0
  O  O19  1  0.825  0.825  0.983  1.0
  O  O20  1  0.201  0.201  0.189  1.0
  O  O21  1  0.201  0.201  0.690  1.0
  O  O22  1  0.799  0.799  0.310  1.0
  O  O23  1  0.797  0.797  0.812  1.0
  O  O24  1  0.500  0.500  0.500  1.0
  O  O25  1  0.501  0.501  1.000  1.0
  O  O26  1  0.874  0.874  0.144  1.0
  O  O27  1  0.873  0.873  0.645  1.0
  O  O28  1  0.126  0.126  0.355  1.0
  O  O29  1  0.128  0.128  0.858  1.0
[/CIF]
.
The material described by Sm3LaO6 crystallizes in the monoclinic Cm space group. There are nine inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 7-coordinate geometry to one O(12), one O(14), one O(8), two equivalent O(18), and two equivalent O(5) atoms. In the second Sm site, Sm(2) is bonded in a 6-coordinate geometry to one O(15), one O(5), two equivalent O(1), and two equivalent O(14) atoms. In the third Sm site, Sm(3) is bonded in a 6-coordinate geometry to one O(16), one O(6), two equivalent O(13), and two equivalent O(2) atoms. In the fourth Sm site, Sm(4) is bonded in a 6-coordinate geometry to one O(17), one O(7), two equivalent O(13), and two equivalent O(3) atoms. In the fifth Sm site, Sm(5) is bonded to one O(18), one O(8), two equivalent O(14), and two equivalent O(4) atoms to form distorted edge-sharing SmO6 octahedra. In the sixth Sm site, Sm(6) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(9), two equivalent O(11), and two equivalent O(15) atoms. In the seventh Sm site, Sm(7) is bonded in a 7-coordinate geometry to one O(10), one O(2), one O(4), two equivalent O(12), and two equivalent O(16) atoms. In the eighth Sm site, Sm(8) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(3), two equivalent O(17), and two equivalent O(9) atoms. In the ninth Sm site, Sm(9) is bonded in a 7-coordinate geometry to one O(12), one O(2), one O(4), two equivalent O(10), and two equivalent O(18) atoms. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(14), one O(5), one O(9), two equivalent O(15), and two equivalent O(8) atoms. In the second La site, La(2) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(6), two equivalent O(16), and two equivalent O(7) atoms. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(7), two equivalent O(17), and two equivalent O(6) atoms. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to one Sm(6), one Sm(8), and two equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with two equivalent O(14)LaSm5 octahedra, corners with two equivalent O(17)La2Sm3 square pyramids, corners with two equivalent O(5)LaSm3 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra,  an edgeedge with one O(14)LaSm5 octahedra, edges with two equivalent O(15)La2Sm3 square pyramids, and  an edgeedge with one O(3)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the second O site, O(2) is bonded to one Sm(7), one Sm(9), and two equivalent Sm(3) atoms to form OSm4 tetrahedra that share corners with two equivalent O(13)La2Sm4 octahedra, corners with two equivalent O(18)Sm5 square pyramids, corners with two equivalent O(6)La3Sm tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra,  an edgeedge with one O(13)La2Sm4 octahedra, edges with two equivalent O(16)La2Sm3 square pyramids, and  an edgeedge with one O(4)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the third O site, O(3) is bonded to one Sm(6), one Sm(8), and two equivalent Sm(4) atoms to form OSm4 tetrahedra that share corners with two equivalent O(13)La2Sm4 octahedra, corners with two equivalent O(15)La2Sm3 square pyramids, corners with two equivalent O(7)La3Sm tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra,  an edgeedge with one O(13)La2Sm4 octahedra, edges with two equivalent O(17)La2Sm3 square pyramids, and  an edgeedge with one O(1)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the fourth O site, O(4) is bonded to one Sm(7), one Sm(9), and two equivalent Sm(5) atoms to form OSm4 tetrahedra that share corners with two equivalent O(14)LaSm5 octahedra, corners with two equivalent O(16)La2Sm3 square pyramids, corners with two equivalent O(8)La2Sm2 tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra,  an edgeedge with one O(14)LaSm5 octahedra, edges with two equivalent O(18)Sm5 square pyramids, and  an edgeedge with one O(2)Sm4 tetrahedra. The corner-sharing octahedral tilt angles are 14°. In the fifth O site, O(5) is bonded to one Sm(2), two equivalent Sm(1), and one La(1) atom to form OLaSm3 tetrahedra that share  a cornercorner with one O(14)LaSm5 octahedra, corners with two equivalent O(18)Sm5 square pyramids, corners with three equivalent O(15)La2Sm3 square pyramids, corners with two equivalent O(5)LaSm3 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra,  an edgeedge with one O(18)Sm5 square pyramid, and edges with two equivalent O(8)La2Sm2 tetrahedra. The corner-sharing octahedral tilt angles are 51°. In the sixth O site, O(6) is bonded to one Sm(3), one La(2), and two equivalent La(3) atoms to form OLa3Sm tetrahedra that share  a cornercorner with one O(13)La2Sm4 octahedra, corners with two equivalent O(17)La2Sm3 square pyramids, corners with three equivalent O(16)La2Sm3 square pyramids, corners with two equivalent O(6)La3Sm tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra,  an edgeedge with one O(17)La2Sm3 square pyramid, and edges with two equivalent O(7)La3Sm tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the seventh O site, O(7) is bonded to one Sm(4), one La(3), and two equivalent La(2) atoms to form OLa3Sm tetrahedra that share  a cornercorner with one O(13)La2Sm4 octahedra, corners with two equivalent O(16)La2Sm3 square pyramids, corners with three equivalent O(17)La2Sm3 square pyramids, corners with two equivalent O(7)La3Sm tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra,  an edgeedge with one O(16)La2Sm3 square pyramid, and edges with two equivalent O(6)La3Sm tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the eighth O site, O(8) is bonded to one Sm(1), one Sm(5), and two equivalent La(1) atoms to form OLa2Sm2 tetrahedra that share  a cornercorner with one O(14)LaSm5 octahedra, corners with two equivalent O(15)La2Sm3 square pyramids, corners with three equivalent O(18)Sm5 square pyramids, corners with two equivalent O(8)La2Sm2 tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra,  an edgeedge with one O(15)La2Sm3 square pyramid, and edges with two equivalent O(5)LaSm3 tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sm(6), two equivalent Sm(8), and one La(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sm(7), two equivalent Sm(9), and one La(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sm(8), two equivalent Sm(6), and one La(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(9), and two equivalent Sm(7) atoms. In the thirteenth O site, O(13) is bonded to two equivalent Sm(3), two equivalent Sm(4), one La(2), and one La(3) atom to form OLa2Sm4 octahedra that share  a cornercorner with one O(6)La3Sm tetrahedra,  a cornercorner with one O(7)La3Sm tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra, edges with two equivalent O(16)La2Sm3 square pyramids, edges with two equivalent O(17)La2Sm3 square pyramids,  an edgeedge with one O(2)Sm4 tetrahedra,  an edgeedge with one O(3)Sm4 tetrahedra, edges with two equivalent O(6)La3Sm tetrahedra, and edges with two equivalent O(7)La3Sm tetrahedra. In the fourteenth O site, O(14) is bonded to one Sm(1), two equivalent Sm(2), two equivalent Sm(5), and one La(1) atom to form OLaSm5 octahedra that share  a cornercorner with one O(8)La2Sm2 tetrahedra,  a cornercorner with one O(5)LaSm3 tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra, edges with two equivalent O(15)La2Sm3 square pyramids, edges with two equivalent O(18)Sm5 square pyramids,  an edgeedge with one O(1)Sm4 tetrahedra,  an edgeedge with one O(4)Sm4 tetrahedra, edges with two equivalent O(8)La2Sm2 tetrahedra, and edges with two equivalent O(5)LaSm3 tetrahedra. In the fifteenth O site, O(15) is bonded to one Sm(2), two equivalent Sm(6), and two equivalent La(1) atoms to form distorted OLa2Sm3 square pyramids that share corners with two equivalent O(8)La2Sm2 tetrahedra, corners with two equivalent O(3)Sm4 tetrahedra, corners with three equivalent O(5)LaSm3 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra, edges with two equivalent O(15)La2Sm3 square pyramids,  an edgeedge with one O(8)La2Sm2 tetrahedra, and edges with two equivalent O(1)Sm4 tetrahedra. In the sixteenth O site, O(16) is bonded to one Sm(3), two equivalent Sm(7), and two equivalent La(2) atoms to form distorted OLa2Sm3 square pyramids that share corners with two equivalent O(7)La3Sm tetrahedra, corners with two equivalent O(4)Sm4 tetrahedra, corners with three equivalent O(6)La3Sm tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra, edges with two equivalent O(16)La2Sm3 square pyramids,  an edgeedge with one O(7)La3Sm tetrahedra, and edges with two equivalent O(2)Sm4 tetrahedra. In the seventeenth O site, O(17) is bonded to one Sm(4), two equivalent Sm(8), and two equivalent La(3) atoms to form distorted OLa2Sm3 square pyramids that share corners with two equivalent O(6)La3Sm tetrahedra, corners with two equivalent O(1)Sm4 tetrahedra, corners with three equivalent O(7)La3Sm tetrahedra, edges with two equivalent O(13)La2Sm4 octahedra, edges with two equivalent O(17)La2Sm3 square pyramids,  an edgeedge with one O(6)La3Sm tetrahedra, and edges with two equivalent O(3)Sm4 tetrahedra. In the eighteenth O site, O(18) is bonded to one Sm(5), two equivalent Sm(1), and two equivalent Sm(9) atoms to form distorted OSm5 square pyramids that share corners with two equivalent O(5)LaSm3 tetrahedra, corners with two equivalent O(2)Sm4 tetrahedra, corners with three equivalent O(8)La2Sm2 tetrahedra, edges with two equivalent O(14)LaSm5 octahedra, edges with two equivalent O(18)Sm5 square pyramids,  an edgeedge with one O(5)LaSm3 tetrahedra, and edges with two equivalent O(4)Sm4 tetrahedra. is represented by the CIF file [CIF]
data_LaSm3O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.490
_cell_length_b   7.490
_cell_length_c   18.058
_cell_angle_alpha   79.752
_cell_angle_beta   79.752
_cell_angle_gamma   28.393
_symmetry_Int_Tables_number   1
_cell_volume   473.513
_cell_formula_units_Z   3
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  0.310  0.310  0.069  1.0
  La  La1  1  0.311  0.311  0.570  1.0
  La  La2  1  0.689  0.689  0.430  1.0
  Sm  Sm3  1  0.690  0.690  0.931  1.0
  Sm  Sm4  1  0.034  0.034  0.094  1.0
  Sm  Sm5  1  0.033  0.033  0.595  1.0
  Sm  Sm6  1  0.967  0.967  0.405  1.0
  Sm  Sm7  1  0.968  0.968  0.906  1.0
  Sm  Sm8  1  0.367  0.367  0.245  1.0
  Sm  Sm9  1  0.366  0.366  0.746  1.0
  Sm  Sm10  1  0.633  0.633  0.255  1.0
  Sm  Sm11  1  0.634  0.634  0.756  1.0
  O  O12  1  0.529  0.529  0.171  1.0
  O  O13  1  0.529  0.529  0.672  1.0
  O  O14  1  0.471  0.471  0.328  1.0
  O  O15  1  0.472  0.472  0.829  1.0
  O  O16  1  0.174  0.174  0.012  1.0
  O  O17  1  0.174  0.174  0.515  1.0
  O  O18  1  0.826  0.826  0.485  1.0
  O  O19  1  0.825  0.825  0.983  1.0
  O  O20  1  0.201  0.201  0.189  1.0
  O  O21  1  0.201  0.201  0.690  1.0
  O  O22  1  0.799  0.799  0.310  1.0
  O  O23  1  0.797  0.797  0.812  1.0
  O  O24  1  0.500  0.500  0.500  1.0
  O  O25  1  0.501  0.501  1.000  1.0
  O  O26  1  0.874  0.874  0.144  1.0
  O  O27  1  0.873  0.873  0.645  1.0
  O  O28  1  0.126  0.126  0.355  1.0
  O  O29  1  0.128  0.128  0.858  1.0
[/CIF]
.