The structure described by Rb8Nd(AsS4)4 crystallizes in the orthorhombic I222 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent S(4) and four equivalent S(3) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to two equivalent S(2), two equivalent S(4), and four equivalent S(3) atoms. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one S(3), one S(4), three equivalent S(1), and three equivalent S(2) atoms. Nd(1) is bonded to four equivalent S(1) and four equivalent S(4) atoms to form distorted NdS8 hexagonal bipyramids that share edges with four equivalent As(1)S4 tetrahedra. As(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form AsS4 tetrahedra that share  an edgeedge with one Nd(1)S8 hexagonal bipyramid. There are four inequivalent S sites. In the first S site, S(3) is bonded in a 6-coordinate geometry to one Rb(3), two equivalent Rb(1), two equivalent Rb(2), and one As(1) atom. In the second S site, S(4) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Nd(1), and one As(1) atom. In the third S site, S(1) is bonded in a 5-coordinate geometry to three equivalent Rb(3), one Nd(1), and one As(1) atom. In the fourth S site, S(2) is bonded in a 1-coordinate geometry to one Rb(2), three equivalent Rb(3), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb8Nd(AsS4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.907
_cell_length_b   11.907
_cell_length_c   11.907
_cell_angle_alpha   134.093
_cell_angle_beta   128.472
_cell_angle_gamma   71.460
_symmetry_Int_Tables_number   1
_cell_volume   929.270
_cell_formula_units_Z   1
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  0.253  0.753  0.500  1.0
  Rb  Rb1  1  0.747  0.247  0.500  1.0
  Rb  Rb2  1  0.213  0.213  0.000  1.0
  Rb  Rb3  1  0.787  0.787  0.000  1.0
  Rb  Rb4  1  0.842  0.713  0.395  1.0
  Rb  Rb5  1  0.682  0.287  0.129  1.0
  Rb  Rb6  1  0.158  0.553  0.871  1.0
  Rb  Rb7  1  0.318  0.447  0.605  1.0
  Nd  Nd8  1  0.500  0.000  0.500  1.0
  As  As9  1  0.144  0.081  0.471  1.0
  As  As10  1  0.390  0.919  0.063  1.0
  As  As11  1  0.856  0.328  0.937  1.0
  As  As12  1  0.610  0.672  0.529  1.0
  S  S13  1  0.366  0.223  0.719  1.0
  S  S14  1  0.496  0.777  0.143  1.0
  S  S15  1  0.634  0.353  0.857  1.0
  S  S16  1  0.504  0.647  0.281  1.0
  S  S17  1  0.170  0.786  0.794  1.0
  S  S18  1  0.008  0.214  0.384  1.0
  S  S19  1  0.830  0.624  0.616  1.0
  S  S20  1  0.992  0.376  0.206  1.0
  S  S21  1  0.031  0.023  0.520  1.0
  S  S22  1  0.497  0.977  0.008  1.0
  S  S23  1  0.969  0.489  0.992  1.0
  S  S24  1  0.503  0.511  0.480  1.0
  S  S25  1  0.604  0.923  0.739  1.0
  S  S26  1  0.816  0.077  0.682  1.0
  S  S27  1  0.396  0.134  0.318  1.0
  S  S28  1  0.184  0.866  0.261  1.0
[/CIF]
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The structure described by Rb8Nd(AsS4)4 crystallizes in the orthorhombic I222 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent S(4) and four equivalent S(3) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to two equivalent S(2), two equivalent S(4), and four equivalent S(3) atoms. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one S(3), one S(4), three equivalent S(1), and three equivalent S(2) atoms. Nd(1) is bonded to four equivalent S(1) and four equivalent S(4) atoms to form distorted NdS8 hexagonal bipyramids that share edges with four equivalent As(1)S4 tetrahedra. As(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form AsS4 tetrahedra that share  an edgeedge with one Nd(1)S8 hexagonal bipyramid. There are four inequivalent S sites. In the first S site, S(3) is bonded in a 6-coordinate geometry to one Rb(3), two equivalent Rb(1), two equivalent Rb(2), and one As(1) atom. In the second S site, S(4) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Nd(1), and one As(1) atom. In the third S site, S(1) is bonded in a 5-coordinate geometry to three equivalent Rb(3), one Nd(1), and one As(1) atom. In the fourth S site, S(2) is bonded in a 1-coordinate geometry to one Rb(2), three equivalent Rb(3), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb8Nd(AsS4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.907
_cell_length_b   11.907
_cell_length_c   11.907
_cell_angle_alpha   134.093
_cell_angle_beta   128.472
_cell_angle_gamma   71.460
_symmetry_Int_Tables_number   1
_cell_volume   929.270
_cell_formula_units_Z   1
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  0.253  0.753  0.500  1.0
  Rb  Rb1  1  0.747  0.247  0.500  1.0
  Rb  Rb2  1  0.213  0.213  0.000  1.0
  Rb  Rb3  1  0.787  0.787  0.000  1.0
  Rb  Rb4  1  0.842  0.713  0.395  1.0
  Rb  Rb5  1  0.682  0.287  0.129  1.0
  Rb  Rb6  1  0.158  0.553  0.871  1.0
  Rb  Rb7  1  0.318  0.447  0.605  1.0
  Nd  Nd8  1  0.500  0.000  0.500  1.0
  As  As9  1  0.144  0.081  0.471  1.0
  As  As10  1  0.390  0.919  0.063  1.0
  As  As11  1  0.856  0.328  0.937  1.0
  As  As12  1  0.610  0.672  0.529  1.0
  S  S13  1  0.366  0.223  0.719  1.0
  S  S14  1  0.496  0.777  0.143  1.0
  S  S15  1  0.634  0.353  0.857  1.0
  S  S16  1  0.504  0.647  0.281  1.0
  S  S17  1  0.170  0.786  0.794  1.0
  S  S18  1  0.008  0.214  0.384  1.0
  S  S19  1  0.830  0.624  0.616  1.0
  S  S20  1  0.992  0.376  0.206  1.0
  S  S21  1  0.031  0.023  0.520  1.0
  S  S22  1  0.497  0.977  0.008  1.0
  S  S23  1  0.969  0.489  0.992  1.0
  S  S24  1  0.503  0.511  0.480  1.0
  S  S25  1  0.604  0.923  0.739  1.0
  S  S26  1  0.816  0.077  0.682  1.0
  S  S27  1  0.396  0.134  0.318  1.0
  S  S28  1  0.184  0.866  0.261  1.0
[/CIF]
.