The structure described by Rb3Sm(PS4)2 crystallizes in the monoclinic P2_1 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one S(1), one S(4), one S(6), one S(7), one S(8), and two equivalent S(2) atoms. In the second Rb site, Rb(2) is bonded to one S(1), one S(3), one S(6), one S(7), one S(8), and two equivalent S(5) atoms to form distorted RbS7 hexagonal pyramids that share corners with two equivalent Rb(2)S7 hexagonal pyramids,  a cornercorner with one P(1)S4 tetrahedra,  an edgeedge with one P(2)S4 tetrahedra, and edges with two equivalent P(1)S4 tetrahedra. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one S(1), one S(2), one S(3), one S(5), one S(6), one S(8), and three equivalent S(7) atoms. Sm(1) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(3), one S(5), one S(6), one S(8), and two equivalent S(4) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one S(5), one S(6), one S(7), and one S(8) atom to form PS4 tetrahedra that share  a cornercorner with one Rb(2)S7 hexagonal pyramid and edges with two equivalent Rb(2)S7 hexagonal pyramids. In the second P site, P(2) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form PS4 tetrahedra that share  an edgeedge with one Rb(2)S7 hexagonal pyramid. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Sm(1), and one P(2) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Rb(3), two equivalent Rb(1), one Sm(1), and one P(2) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Rb(2), one Rb(3), one Sm(1), and one P(2) atom. In the fourth S site, S(4) is bonded in a distorted see-saw-like geometry to one Rb(1), two equivalent Sm(1), and one P(2) atom. In the fifth S site, S(5) is bonded to one Rb(3), two equivalent Rb(2), one Sm(1), and one P(1) atom to form distorted corner-sharing SRb3SmP square pyramids. In the sixth S site, S(6) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Sm(1), and one P(1) atom. In the seventh S site, S(7) is bonded in a 6-coordinate geometry to one Rb(1), one Rb(2), three equivalent Rb(3), and one P(1) atom. In the eighth S site, S(8) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Sm(1), and one P(1) atom. is represented by the CIF card [CIF]
data_Rb3Sm(PS4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.896
_cell_length_b   9.894
_cell_length_c   11.824
_cell_angle_alpha   89.325
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   806.681
_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
  Rb  Rb0  1  0.803  0.356  0.097  1.0
  Rb  Rb1  1  0.303  0.644  0.903  1.0
  Rb  Rb2  1  0.307  0.826  0.414  1.0
  Rb  Rb3  1  0.807  0.174  0.586  1.0
  Rb  Rb4  1  0.809  0.608  0.650  1.0
  Rb  Rb5  1  0.309  0.392  0.350  1.0
  Sm  Sm6  1  0.787  0.884  0.147  1.0
  Sm  Sm7  1  0.287  0.116  0.853  1.0
  P  P8  1  0.809  0.627  0.308  1.0
  P  P9  1  0.830  0.915  0.846  1.0
  P  P10  1  0.330  0.085  0.154  1.0
  P  P11  1  0.309  0.373  0.692  1.0
  S  S12  1  0.065  0.910  0.739  1.0
  S  S13  1  0.565  0.090  0.261  1.0
  S  S14  1  0.806  0.738  0.938  1.0
  S  S15  1  0.306  0.262  0.062  1.0
  S  S16  1  0.085  0.053  0.249  1.0
  S  S17  1  0.895  0.065  0.960  1.0
  S  S18  1  0.585  0.947  0.751  1.0
  S  S19  1  0.395  0.935  0.040  1.0
  S  S20  1  0.305  0.202  0.595  1.0
  S  S21  1  0.805  0.798  0.405  1.0
  S  S22  1  0.543  0.347  0.798  1.0
  S  S23  1  0.043  0.653  0.202  1.0
  S  S24  1  0.315  0.553  0.609  1.0
  S  S25  1  0.815  0.447  0.391  1.0
  S  S26  1  0.064  0.355  0.793  1.0
  S  S27  1  0.564  0.645  0.207  1.0
[/CIF]
.
The structure described by Rb3Sm(PS4)2 crystallizes in the monoclinic P2_1 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one S(1), one S(4), one S(6), one S(7), one S(8), and two equivalent S(2) atoms. In the second Rb site, Rb(2) is bonded to one S(1), one S(3), one S(6), one S(7), one S(8), and two equivalent S(5) atoms to form distorted RbS7 hexagonal pyramids that share corners with two equivalent Rb(2)S7 hexagonal pyramids,  a cornercorner with one P(1)S4 tetrahedra,  an edgeedge with one P(2)S4 tetrahedra, and edges with two equivalent P(1)S4 tetrahedra. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one S(1), one S(2), one S(3), one S(5), one S(6), one S(8), and three equivalent S(7) atoms. Sm(1) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(3), one S(5), one S(6), one S(8), and two equivalent S(4) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one S(5), one S(6), one S(7), and one S(8) atom to form PS4 tetrahedra that share  a cornercorner with one Rb(2)S7 hexagonal pyramid and edges with two equivalent Rb(2)S7 hexagonal pyramids. In the second P site, P(2) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form PS4 tetrahedra that share  an edgeedge with one Rb(2)S7 hexagonal pyramid. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Sm(1), and one P(2) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Rb(3), two equivalent Rb(1), one Sm(1), and one P(2) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Rb(2), one Rb(3), one Sm(1), and one P(2) atom. In the fourth S site, S(4) is bonded in a distorted see-saw-like geometry to one Rb(1), two equivalent Sm(1), and one P(2) atom. In the fifth S site, S(5) is bonded to one Rb(3), two equivalent Rb(2), one Sm(1), and one P(1) atom to form distorted corner-sharing SRb3SmP square pyramids. In the sixth S site, S(6) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Sm(1), and one P(1) atom. In the seventh S site, S(7) is bonded in a 6-coordinate geometry to one Rb(1), one Rb(2), three equivalent Rb(3), and one P(1) atom. In the eighth S site, S(8) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Sm(1), and one P(1) atom. is represented by the CIF card [CIF]
data_Rb3Sm(PS4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.896
_cell_length_b   9.894
_cell_length_c   11.824
_cell_angle_alpha   89.325
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   806.681
_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
  Rb  Rb0  1  0.803  0.356  0.097  1.0
  Rb  Rb1  1  0.303  0.644  0.903  1.0
  Rb  Rb2  1  0.307  0.826  0.414  1.0
  Rb  Rb3  1  0.807  0.174  0.586  1.0
  Rb  Rb4  1  0.809  0.608  0.650  1.0
  Rb  Rb5  1  0.309  0.392  0.350  1.0
  Sm  Sm6  1  0.787  0.884  0.147  1.0
  Sm  Sm7  1  0.287  0.116  0.853  1.0
  P  P8  1  0.809  0.627  0.308  1.0
  P  P9  1  0.830  0.915  0.846  1.0
  P  P10  1  0.330  0.085  0.154  1.0
  P  P11  1  0.309  0.373  0.692  1.0
  S  S12  1  0.065  0.910  0.739  1.0
  S  S13  1  0.565  0.090  0.261  1.0
  S  S14  1  0.806  0.738  0.938  1.0
  S  S15  1  0.306  0.262  0.062  1.0
  S  S16  1  0.085  0.053  0.249  1.0
  S  S17  1  0.895  0.065  0.960  1.0
  S  S18  1  0.585  0.947  0.751  1.0
  S  S19  1  0.395  0.935  0.040  1.0
  S  S20  1  0.305  0.202  0.595  1.0
  S  S21  1  0.805  0.798  0.405  1.0
  S  S22  1  0.543  0.347  0.798  1.0
  S  S23  1  0.043  0.653  0.202  1.0
  S  S24  1  0.315  0.553  0.609  1.0
  S  S25  1  0.815  0.447  0.391  1.0
  S  S26  1  0.064  0.355  0.793  1.0
  S  S27  1  0.564  0.645  0.207  1.0
[/CIF]
.