The material described by Sm3ReO8 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(8) atoms. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. In the third Sm site, Sm(3) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(7), one O(8), two equivalent O(5), and two equivalent O(6) atoms. Re(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded to one Sm(1), one Sm(2), and two equivalent Sm(3) atoms to form distorted OSm4 tetrahedra that share corners with two equivalent O(7)Sm3Re tetrahedra, corners with two equivalent O(5)Sm4 tetrahedra, corners with four equivalent O(2)Sm3Re trigonal pyramids,  an edgeedge with one O(7)Sm3Re tetrahedra, and edges with three equivalent O(6)Sm4 tetrahedra. In the second O site, O(6) is bonded to one Sm(1), one Sm(2), and two equivalent Sm(3) atoms to form distorted OSm4 tetrahedra that share corners with two equivalent O(6)Sm4 tetrahedra, corners with four equivalent O(7)Sm3Re tetrahedra, corners with four equivalent O(2)Sm3Re trigonal pyramids, and edges with three equivalent O(5)Sm4 tetrahedra. In the third O site, O(7) is bonded to one Sm(3), two equivalent Sm(2), and one Re(1) atom to form distorted OSm3Re tetrahedra that share corners with two equivalent O(5)Sm4 tetrahedra, corners with four equivalent O(6)Sm4 tetrahedra, corners with two equivalent O(2)Sm3Re trigonal pyramids,  an edgeedge with one O(7)Sm3Re tetrahedra,  an edgeedge with one O(5)Sm4 tetrahedra, and  an edgeedge with one O(2)Sm3Re trigonal pyramid. In the fourth O site, O(8) is bonded in a 4-coordinate geometry to one Sm(3), two equivalent Sm(1), and one Re(1) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to one Sm(1), one Sm(2), and one Re(1) atom. In the sixth O site, O(2) is bonded to one Sm(1), one Sm(2), one Sm(3), and one Re(1) atom to form distorted OSm3Re trigonal pyramids that share corners with two equivalent O(7)Sm3Re tetrahedra, corners with four equivalent O(5)Sm4 tetrahedra, corners with four equivalent O(6)Sm4 tetrahedra, and  an edgeedge with one O(7)Sm3Re tetrahedra. In the seventh O site, O(3) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(2), one Sm(3), and one Re(1) atom. In the eighth O site, O(4) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one Re(1) atom. is represented by the CIF file [CIF]
data_Sm3ReO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.112
_cell_length_b   7.348
_cell_length_c   14.702
_cell_angle_alpha   69.174
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   617.138
_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  0.187  0.895  0.666  1.0
  Sm  Sm1  1  0.687  0.105  0.834  1.0
  Sm  Sm2  1  0.813  0.105  0.334  1.0
  Sm  Sm3  1  0.313  0.895  0.166  1.0
  Sm  Sm4  1  0.799  0.662  0.054  1.0
  Sm  Sm5  1  0.299  0.338  0.446  1.0
  Sm  Sm6  1  0.201  0.338  0.946  1.0
  Sm  Sm7  1  0.701  0.662  0.554  1.0
  Sm  Sm8  1  0.761  0.596  0.299  1.0
  Sm  Sm9  1  0.261  0.404  0.201  1.0
  Sm  Sm10  1  0.239  0.404  0.701  1.0
  Sm  Sm11  1  0.739  0.596  0.799  1.0
  Re  Re12  1  0.745  0.179  0.591  1.0
  Re  Re13  1  0.245  0.821  0.909  1.0
  Re  Re14  1  0.255  0.821  0.409  1.0
  Re  Re15  1  0.755  0.179  0.091  1.0
  O  O16  1  0.698  0.025  0.021  1.0
  O  O17  1  0.198  0.975  0.479  1.0
  O  O18  1  0.302  0.975  0.979  1.0
  O  O19  1  0.802  0.025  0.521  1.0
  O  O20  1  0.457  0.249  0.096  1.0
  O  O21  1  0.957  0.751  0.404  1.0
  O  O22  1  0.543  0.751  0.904  1.0
  O  O23  1  0.043  0.249  0.596  1.0
  O  O24  1  0.849  0.331  0.169  1.0
  O  O25  1  0.349  0.669  0.331  1.0
  O  O26  1  0.151  0.669  0.831  1.0
  O  O27  1  0.651  0.331  0.669  1.0
  O  O28  1  0.049  0.122  0.089  1.0
  O  O29  1  0.549  0.878  0.411  1.0
  O  O30  1  0.951  0.878  0.911  1.0
  O  O31  1  0.451  0.122  0.589  1.0
  O  O32  1  0.971  0.314  0.827  1.0
  O  O33  1  0.471  0.686  0.673  1.0
  O  O34  1  0.029  0.686  0.173  1.0
  O  O35  1  0.529  0.314  0.327  1.0
  O  O36  1  0.971  0.646  0.659  1.0
  O  O37  1  0.471  0.354  0.841  1.0
  O  O38  1  0.029  0.354  0.341  1.0
  O  O39  1  0.529  0.646  0.159  1.0
  O  O40  1  0.698  0.410  0.482  1.0
  O  O41  1  0.198  0.590  0.018  1.0
  O  O42  1  0.302  0.590  0.518  1.0
  O  O43  1  0.802  0.410  0.982  1.0
  O  O44  1  0.796  0.970  0.711  1.0
  O  O45  1  0.296  0.030  0.789  1.0
  O  O46  1  0.204  0.030  0.289  1.0
  O  O47  1  0.704  0.970  0.211  1.0
[/CIF]
.
The material described by Sm3ReO8 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(8) atoms. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. In the third Sm site, Sm(3) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(7), one O(8), two equivalent O(5), and two equivalent O(6) atoms. Re(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded to one Sm(1), one Sm(2), and two equivalent Sm(3) atoms to form distorted OSm4 tetrahedra that share corners with two equivalent O(7)Sm3Re tetrahedra, corners with two equivalent O(5)Sm4 tetrahedra, corners with four equivalent O(2)Sm3Re trigonal pyramids,  an edgeedge with one O(7)Sm3Re tetrahedra, and edges with three equivalent O(6)Sm4 tetrahedra. In the second O site, O(6) is bonded to one Sm(1), one Sm(2), and two equivalent Sm(3) atoms to form distorted OSm4 tetrahedra that share corners with two equivalent O(6)Sm4 tetrahedra, corners with four equivalent O(7)Sm3Re tetrahedra, corners with four equivalent O(2)Sm3Re trigonal pyramids, and edges with three equivalent O(5)Sm4 tetrahedra. In the third O site, O(7) is bonded to one Sm(3), two equivalent Sm(2), and one Re(1) atom to form distorted OSm3Re tetrahedra that share corners with two equivalent O(5)Sm4 tetrahedra, corners with four equivalent O(6)Sm4 tetrahedra, corners with two equivalent O(2)Sm3Re trigonal pyramids,  an edgeedge with one O(7)Sm3Re tetrahedra,  an edgeedge with one O(5)Sm4 tetrahedra, and  an edgeedge with one O(2)Sm3Re trigonal pyramid. In the fourth O site, O(8) is bonded in a 4-coordinate geometry to one Sm(3), two equivalent Sm(1), and one Re(1) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to one Sm(1), one Sm(2), and one Re(1) atom. In the sixth O site, O(2) is bonded to one Sm(1), one Sm(2), one Sm(3), and one Re(1) atom to form distorted OSm3Re trigonal pyramids that share corners with two equivalent O(7)Sm3Re tetrahedra, corners with four equivalent O(5)Sm4 tetrahedra, corners with four equivalent O(6)Sm4 tetrahedra, and  an edgeedge with one O(7)Sm3Re tetrahedra. In the seventh O site, O(3) is bonded in a 4-coordinate geometry to one Sm(1), one Sm(2), one Sm(3), and one Re(1) atom. In the eighth O site, O(4) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one Re(1) atom. is represented by the CIF file [CIF]
data_Sm3ReO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.112
_cell_length_b   7.348
_cell_length_c   14.702
_cell_angle_alpha   69.174
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   617.138
_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  0.187  0.895  0.666  1.0
  Sm  Sm1  1  0.687  0.105  0.834  1.0
  Sm  Sm2  1  0.813  0.105  0.334  1.0
  Sm  Sm3  1  0.313  0.895  0.166  1.0
  Sm  Sm4  1  0.799  0.662  0.054  1.0
  Sm  Sm5  1  0.299  0.338  0.446  1.0
  Sm  Sm6  1  0.201  0.338  0.946  1.0
  Sm  Sm7  1  0.701  0.662  0.554  1.0
  Sm  Sm8  1  0.761  0.596  0.299  1.0
  Sm  Sm9  1  0.261  0.404  0.201  1.0
  Sm  Sm10  1  0.239  0.404  0.701  1.0
  Sm  Sm11  1  0.739  0.596  0.799  1.0
  Re  Re12  1  0.745  0.179  0.591  1.0
  Re  Re13  1  0.245  0.821  0.909  1.0
  Re  Re14  1  0.255  0.821  0.409  1.0
  Re  Re15  1  0.755  0.179  0.091  1.0
  O  O16  1  0.698  0.025  0.021  1.0
  O  O17  1  0.198  0.975  0.479  1.0
  O  O18  1  0.302  0.975  0.979  1.0
  O  O19  1  0.802  0.025  0.521  1.0
  O  O20  1  0.457  0.249  0.096  1.0
  O  O21  1  0.957  0.751  0.404  1.0
  O  O22  1  0.543  0.751  0.904  1.0
  O  O23  1  0.043  0.249  0.596  1.0
  O  O24  1  0.849  0.331  0.169  1.0
  O  O25  1  0.349  0.669  0.331  1.0
  O  O26  1  0.151  0.669  0.831  1.0
  O  O27  1  0.651  0.331  0.669  1.0
  O  O28  1  0.049  0.122  0.089  1.0
  O  O29  1  0.549  0.878  0.411  1.0
  O  O30  1  0.951  0.878  0.911  1.0
  O  O31  1  0.451  0.122  0.589  1.0
  O  O32  1  0.971  0.314  0.827  1.0
  O  O33  1  0.471  0.686  0.673  1.0
  O  O34  1  0.029  0.686  0.173  1.0
  O  O35  1  0.529  0.314  0.327  1.0
  O  O36  1  0.971  0.646  0.659  1.0
  O  O37  1  0.471  0.354  0.841  1.0
  O  O38  1  0.029  0.354  0.341  1.0
  O  O39  1  0.529  0.646  0.159  1.0
  O  O40  1  0.698  0.410  0.482  1.0
  O  O41  1  0.198  0.590  0.018  1.0
  O  O42  1  0.302  0.590  0.518  1.0
  O  O43  1  0.802  0.410  0.982  1.0
  O  O44  1  0.796  0.970  0.711  1.0
  O  O45  1  0.296  0.030  0.789  1.0
  O  O46  1  0.204  0.030  0.289  1.0
  O  O47  1  0.704  0.970  0.211  1.0
[/CIF]
.