The structure described by Nd4La4S4O7 crystallizes in the monoclinic Cm space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 7-coordinate geometry to one S(1), one S(2), one S(3), one O(1), one O(2), one O(3), and one O(4) atom. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one S(3), two equivalent S(1), one O(2), and two equivalent O(3) atoms. In the third Nd site, Nd(3) is bonded in a 7-coordinate geometry to one S(2), two equivalent S(1), one O(1), one O(5), and two equivalent O(3) atoms. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one S(2), two equivalent S(1), one O(1), one O(5), and two equivalent O(4) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to one S(3), two equivalent S(1), one O(2), and two equivalent O(4) atoms. In the third La site, La(3) is bonded in a 6-coordinate geometry to one S(1), one S(2), one S(3), one O(3), one O(4), and one O(5) atom. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Nd(1), one Nd(2), one Nd(3), one La(1), one La(2), and one La(3) atom to form SLa3Nd3 octahedra that share  a cornercorner with one O(5)La3Nd tetrahedra,  a cornercorner with one O(1)LaNd3 tetrahedra,  a cornercorner with one O(2)LaNd3 tetrahedra, corners with four equivalent O(4)La3Nd tetrahedra, corners with four equivalent O(3)LaNd3 tetrahedra, edges with two equivalent S(1)La3Nd3 octahedra, edges with two equivalent S(2)La3Nd3 octahedra, edges with two equivalent S(3)La3Nd3 octahedra,  an edgeedge with one O(4)La3Nd tetrahedra,  an edgeedge with one O(5)La3Nd tetrahedra,  an edgeedge with one O(1)LaNd3 tetrahedra,  an edgeedge with one O(2)LaNd3 tetrahedra, and  an edgeedge with one O(3)LaNd3 tetrahedra. In the second S site, S(2) is bonded to one Nd(3), two equivalent Nd(1), one La(1), and two equivalent La(3) atoms to form SLa3Nd3 octahedra that share corners with two equivalent O(4)La3Nd tetrahedra, corners with two equivalent O(3)LaNd3 tetrahedra, corners with four equivalent O(5)La3Nd tetrahedra, corners with four equivalent O(1)LaNd3 tetrahedra, edges with two equivalent S(3)La3Nd3 octahedra, edges with four equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(2)LaNd3 tetrahedra, edges with two equivalent O(4)La3Nd tetrahedra, and edges with two equivalent O(3)LaNd3 tetrahedra. In the third S site, S(3) is bonded to one Nd(2), two equivalent Nd(1), one La(2), and two equivalent La(3) atoms to form SLa3Nd3 octahedra that share corners with two equivalent O(4)La3Nd tetrahedra, corners with two equivalent O(3)LaNd3 tetrahedra, corners with four equivalent O(2)LaNd3 tetrahedra, edges with two equivalent S(2)La3Nd3 octahedra, edges with four equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(5)La3Nd tetrahedra,  an edgeedge with one O(1)LaNd3 tetrahedra, edges with two equivalent O(4)La3Nd tetrahedra, and edges with two equivalent O(3)LaNd3 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Nd(3), two equivalent Nd(1), and one La(1) atom to form OLaNd3 tetrahedra that share corners with two equivalent S(1)La3Nd3 octahedra, corners with four equivalent S(2)La3Nd3 octahedra, corners with two equivalent O(2)LaNd3 tetrahedra, corners with four equivalent O(3)LaNd3 tetrahedra,  an edgeedge with one S(3)La3Nd3 octahedra, edges with two equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(5)La3Nd tetrahedra, and edges with two equivalent O(4)La3Nd tetrahedra. The corner-sharing octahedral tilt angles range from 25-50°. In the second O site, O(2) is bonded to one Nd(2), two equivalent Nd(1), and one La(2) atom to form OLaNd3 tetrahedra that share corners with two equivalent S(1)La3Nd3 octahedra, corners with four equivalent S(3)La3Nd3 octahedra, corners with two equivalent O(1)LaNd3 tetrahedra, corners with four equivalent O(3)LaNd3 tetrahedra,  an edgeedge with one S(2)La3Nd3 octahedra, edges with two equivalent S(1)La3Nd3 octahedra, and edges with two equivalent O(4)La3Nd tetrahedra. The corner-sharing octahedral tilt angles range from 19-52°. In the third O site, O(3) is bonded to one Nd(1), one Nd(2), one Nd(3), and one La(3) atom to form OLaNd3 tetrahedra that share  a cornercorner with one S(2)La3Nd3 octahedra,  a cornercorner with one S(3)La3Nd3 octahedra, corners with four equivalent S(1)La3Nd3 octahedra, corners with two equivalent O(1)LaNd3 tetrahedra, corners with two equivalent O(2)LaNd3 tetrahedra, corners with two equivalent O(3)LaNd3 tetrahedra,  an edgeedge with one S(1)La3Nd3 octahedra,  an edgeedge with one S(2)La3Nd3 octahedra,  an edgeedge with one S(3)La3Nd3 octahedra,  an edgeedge with one O(4)La3Nd tetrahedra, and  an edgeedge with one O(5)La3Nd tetrahedra. The corner-sharing octahedral tilt angles range from 21-52°. In the fourth O site, O(4) is bonded to one Nd(1), one La(1), one La(2), and one La(3) atom to form OLa3Nd tetrahedra that share  a cornercorner with one S(2)La3Nd3 octahedra,  a cornercorner with one S(3)La3Nd3 octahedra, corners with four equivalent S(1)La3Nd3 octahedra, corners with two equivalent O(4)La3Nd tetrahedra, corners with two equivalent O(5)La3Nd tetrahedra,  an edgeedge with one S(1)La3Nd3 octahedra,  an edgeedge with one S(2)La3Nd3 octahedra,  an edgeedge with one S(3)La3Nd3 octahedra,  an edgeedge with one O(1)LaNd3 tetrahedra,  an edgeedge with one O(2)LaNd3 tetrahedra, and  an edgeedge with one O(3)LaNd3 tetrahedra. The corner-sharing octahedral tilt angles range from 24-52°. In the fifth O site, O(5) is bonded to one Nd(3), one La(1), and two equivalent La(3) atoms to form OLa3Nd tetrahedra that share corners with two equivalent S(1)La3Nd3 octahedra, corners with four equivalent S(2)La3Nd3 octahedra, corners with four equivalent O(4)La3Nd tetrahedra,  an edgeedge with one S(3)La3Nd3 octahedra, edges with two equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(1)LaNd3 tetrahedra, and edges with two equivalent O(3)LaNd3 tetrahedra. The corner-sharing octahedral tilt angles range from 24-50°. is represented by the CIF card [CIF]
data_La4Nd4S4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.983
_cell_length_b   7.983
_cell_length_c   9.809
_cell_angle_alpha   52.671
_cell_angle_beta   52.671
_cell_angle_gamma   60.630
_symmetry_Int_Tables_number   1
_cell_volume   387.695
_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
  La  La0  1  0.188  0.188  0.833  1.0
  La  La1  1  0.694  0.694  0.821  1.0
  La  La2  1  0.175  0.695  0.340  1.0
  La  La3  1  0.695  0.175  0.340  1.0
  Nd  Nd4  1  0.802  0.301  0.667  1.0
  Nd  Nd5  1  0.301  0.802  0.667  1.0
  Nd  Nd6  1  0.296  0.296  0.167  1.0
  Nd  Nd7  1  0.802  0.802  0.166  1.0
  S  S8  1  0.994  0.498  0.000  1.0
  S  S9  1  0.498  0.994  0.000  1.0
  S  S10  1  0.498  0.498  0.498  1.0
  S  S11  1  0.000  0.000  0.501  1.0
  O  O12  1  0.012  0.012  0.835  1.0
  O  O13  1  0.513  0.513  0.839  1.0
  O  O14  1  0.514  0.021  0.330  1.0
  O  O15  1  0.021  0.514  0.330  1.0
  O  O16  1  0.976  0.472  0.667  1.0
  O  O17  1  0.472  0.976  0.667  1.0
  O  O18  1  0.976  0.976  0.164  1.0
[/CIF]
.
The structure described by Nd4La4S4O7 crystallizes in the monoclinic Cm space group. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 7-coordinate geometry to one S(1), one S(2), one S(3), one O(1), one O(2), one O(3), and one O(4) atom. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one S(3), two equivalent S(1), one O(2), and two equivalent O(3) atoms. In the third Nd site, Nd(3) is bonded in a 7-coordinate geometry to one S(2), two equivalent S(1), one O(1), one O(5), and two equivalent O(3) atoms. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one S(2), two equivalent S(1), one O(1), one O(5), and two equivalent O(4) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to one S(3), two equivalent S(1), one O(2), and two equivalent O(4) atoms. In the third La site, La(3) is bonded in a 6-coordinate geometry to one S(1), one S(2), one S(3), one O(3), one O(4), and one O(5) atom. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Nd(1), one Nd(2), one Nd(3), one La(1), one La(2), and one La(3) atom to form SLa3Nd3 octahedra that share  a cornercorner with one O(5)La3Nd tetrahedra,  a cornercorner with one O(1)LaNd3 tetrahedra,  a cornercorner with one O(2)LaNd3 tetrahedra, corners with four equivalent O(4)La3Nd tetrahedra, corners with four equivalent O(3)LaNd3 tetrahedra, edges with two equivalent S(1)La3Nd3 octahedra, edges with two equivalent S(2)La3Nd3 octahedra, edges with two equivalent S(3)La3Nd3 octahedra,  an edgeedge with one O(4)La3Nd tetrahedra,  an edgeedge with one O(5)La3Nd tetrahedra,  an edgeedge with one O(1)LaNd3 tetrahedra,  an edgeedge with one O(2)LaNd3 tetrahedra, and  an edgeedge with one O(3)LaNd3 tetrahedra. In the second S site, S(2) is bonded to one Nd(3), two equivalent Nd(1), one La(1), and two equivalent La(3) atoms to form SLa3Nd3 octahedra that share corners with two equivalent O(4)La3Nd tetrahedra, corners with two equivalent O(3)LaNd3 tetrahedra, corners with four equivalent O(5)La3Nd tetrahedra, corners with four equivalent O(1)LaNd3 tetrahedra, edges with two equivalent S(3)La3Nd3 octahedra, edges with four equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(2)LaNd3 tetrahedra, edges with two equivalent O(4)La3Nd tetrahedra, and edges with two equivalent O(3)LaNd3 tetrahedra. In the third S site, S(3) is bonded to one Nd(2), two equivalent Nd(1), one La(2), and two equivalent La(3) atoms to form SLa3Nd3 octahedra that share corners with two equivalent O(4)La3Nd tetrahedra, corners with two equivalent O(3)LaNd3 tetrahedra, corners with four equivalent O(2)LaNd3 tetrahedra, edges with two equivalent S(2)La3Nd3 octahedra, edges with four equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(5)La3Nd tetrahedra,  an edgeedge with one O(1)LaNd3 tetrahedra, edges with two equivalent O(4)La3Nd tetrahedra, and edges with two equivalent O(3)LaNd3 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Nd(3), two equivalent Nd(1), and one La(1) atom to form OLaNd3 tetrahedra that share corners with two equivalent S(1)La3Nd3 octahedra, corners with four equivalent S(2)La3Nd3 octahedra, corners with two equivalent O(2)LaNd3 tetrahedra, corners with four equivalent O(3)LaNd3 tetrahedra,  an edgeedge with one S(3)La3Nd3 octahedra, edges with two equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(5)La3Nd tetrahedra, and edges with two equivalent O(4)La3Nd tetrahedra. The corner-sharing octahedral tilt angles range from 25-50°. In the second O site, O(2) is bonded to one Nd(2), two equivalent Nd(1), and one La(2) atom to form OLaNd3 tetrahedra that share corners with two equivalent S(1)La3Nd3 octahedra, corners with four equivalent S(3)La3Nd3 octahedra, corners with two equivalent O(1)LaNd3 tetrahedra, corners with four equivalent O(3)LaNd3 tetrahedra,  an edgeedge with one S(2)La3Nd3 octahedra, edges with two equivalent S(1)La3Nd3 octahedra, and edges with two equivalent O(4)La3Nd tetrahedra. The corner-sharing octahedral tilt angles range from 19-52°. In the third O site, O(3) is bonded to one Nd(1), one Nd(2), one Nd(3), and one La(3) atom to form OLaNd3 tetrahedra that share  a cornercorner with one S(2)La3Nd3 octahedra,  a cornercorner with one S(3)La3Nd3 octahedra, corners with four equivalent S(1)La3Nd3 octahedra, corners with two equivalent O(1)LaNd3 tetrahedra, corners with two equivalent O(2)LaNd3 tetrahedra, corners with two equivalent O(3)LaNd3 tetrahedra,  an edgeedge with one S(1)La3Nd3 octahedra,  an edgeedge with one S(2)La3Nd3 octahedra,  an edgeedge with one S(3)La3Nd3 octahedra,  an edgeedge with one O(4)La3Nd tetrahedra, and  an edgeedge with one O(5)La3Nd tetrahedra. The corner-sharing octahedral tilt angles range from 21-52°. In the fourth O site, O(4) is bonded to one Nd(1), one La(1), one La(2), and one La(3) atom to form OLa3Nd tetrahedra that share  a cornercorner with one S(2)La3Nd3 octahedra,  a cornercorner with one S(3)La3Nd3 octahedra, corners with four equivalent S(1)La3Nd3 octahedra, corners with two equivalent O(4)La3Nd tetrahedra, corners with two equivalent O(5)La3Nd tetrahedra,  an edgeedge with one S(1)La3Nd3 octahedra,  an edgeedge with one S(2)La3Nd3 octahedra,  an edgeedge with one S(3)La3Nd3 octahedra,  an edgeedge with one O(1)LaNd3 tetrahedra,  an edgeedge with one O(2)LaNd3 tetrahedra, and  an edgeedge with one O(3)LaNd3 tetrahedra. The corner-sharing octahedral tilt angles range from 24-52°. In the fifth O site, O(5) is bonded to one Nd(3), one La(1), and two equivalent La(3) atoms to form OLa3Nd tetrahedra that share corners with two equivalent S(1)La3Nd3 octahedra, corners with four equivalent S(2)La3Nd3 octahedra, corners with four equivalent O(4)La3Nd tetrahedra,  an edgeedge with one S(3)La3Nd3 octahedra, edges with two equivalent S(1)La3Nd3 octahedra,  an edgeedge with one O(1)LaNd3 tetrahedra, and edges with two equivalent O(3)LaNd3 tetrahedra. The corner-sharing octahedral tilt angles range from 24-50°. is represented by the CIF card [CIF]
data_La4Nd4S4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.983
_cell_length_b   7.983
_cell_length_c   9.809
_cell_angle_alpha   52.671
_cell_angle_beta   52.671
_cell_angle_gamma   60.630
_symmetry_Int_Tables_number   1
_cell_volume   387.695
_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
  La  La0  1  0.188  0.188  0.833  1.0
  La  La1  1  0.694  0.694  0.821  1.0
  La  La2  1  0.175  0.695  0.340  1.0
  La  La3  1  0.695  0.175  0.340  1.0
  Nd  Nd4  1  0.802  0.301  0.667  1.0
  Nd  Nd5  1  0.301  0.802  0.667  1.0
  Nd  Nd6  1  0.296  0.296  0.167  1.0
  Nd  Nd7  1  0.802  0.802  0.166  1.0
  S  S8  1  0.994  0.498  0.000  1.0
  S  S9  1  0.498  0.994  0.000  1.0
  S  S10  1  0.498  0.498  0.498  1.0
  S  S11  1  0.000  0.000  0.501  1.0
  O  O12  1  0.012  0.012  0.835  1.0
  O  O13  1  0.513  0.513  0.839  1.0
  O  O14  1  0.514  0.021  0.330  1.0
  O  O15  1  0.021  0.514  0.330  1.0
  O  O16  1  0.976  0.472  0.667  1.0
  O  O17  1  0.472  0.976  0.667  1.0
  O  O18  1  0.976  0.976  0.164  1.0
[/CIF]
.