The structure described by Tb4CeS7 crystallizes in the monoclinic Cm space group. There are four inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to one S(4), two equivalent S(2), two equivalent S(3), and two equivalent S(5) atoms to form distorted TbS7 pentagonal bipyramids that share corners with two equivalent Tb(3)S6 octahedra, corners with two equivalent Tb(4)S6 octahedra, corners with four equivalent Ce(1)S6 octahedra,  an edgeedge with one Ce(1)S6 octahedra, edges with three equivalent Tb(3)S6 octahedra, edges with two equivalent Tb(2)S7 pentagonal bipyramids, and faces with two equivalent Tb(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 22-65°. In the second Tb site, Tb(2) is bonded to one S(3), two equivalent S(1), two equivalent S(4), and two equivalent S(6) atoms to form distorted TbS7 pentagonal bipyramids that share corners with two equivalent Tb(3)S6 octahedra, corners with two equivalent Ce(1)S6 octahedra, corners with four equivalent Tb(4)S6 octahedra,  an edgeedge with one Tb(4)S6 octahedra, edges with three equivalent Tb(3)S6 octahedra, edges with two equivalent Tb(1)S7 pentagonal bipyramids, and faces with two equivalent Tb(2)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 22-68°. In the third Tb site, Tb(3) is bonded to one S(5), one S(6), two equivalent S(3), and two equivalent S(4) atoms to form TbS6 octahedra that share  a cornercorner with one Tb(4)S6 octahedra,  a cornercorner with one Ce(1)S6 octahedra, corners with two equivalent Tb(1)S7 pentagonal bipyramids, corners with two equivalent Tb(2)S7 pentagonal bipyramids, edges with two equivalent Tb(3)S6 octahedra, edges with three equivalent Tb(1)S7 pentagonal bipyramids, and edges with three equivalent Tb(2)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 57-58°. In the fourth Tb site, Tb(4) is bonded to one S(2), one S(6), two equivalent S(1), and two equivalent S(7) atoms to form TbS6 octahedra that share  a cornercorner with one Tb(3)S6 octahedra, corners with two equivalent Ce(1)S6 octahedra, corners with two equivalent Tb(1)S7 pentagonal bipyramids, corners with four equivalent Tb(2)S7 pentagonal bipyramids, edges with two equivalent Tb(4)S6 octahedra, edges with three equivalent Ce(1)S6 octahedra, and  an edgeedge with one Tb(2)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 2-58°. Ce(1) is bonded to one S(1), one S(5), two equivalent S(2), and two equivalent S(7) atoms to form CeS6 octahedra that share  a cornercorner with one Tb(3)S6 octahedra, corners with two equivalent Tb(4)S6 octahedra, corners with two equivalent Tb(2)S7 pentagonal bipyramids, corners with four equivalent Tb(1)S7 pentagonal bipyramids, edges with two equivalent Ce(1)S6 octahedra, edges with three equivalent Tb(4)S6 octahedra, and  an edgeedge with one Tb(1)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 2-57°. There are seven inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Tb(2), two equivalent Tb(4), and one Ce(1) atom to form STb4Ce trigonal bipyramids that share  a cornercorner with one S(5)Tb3Ce tetrahedra, corners with four equivalent S(6)Tb4 tetrahedra, corners with two equivalent S(3)Tb5 trigonal bipyramids, corners with two equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(6)Tb4 tetrahedra,  an edgeedge with one S(4)Tb5 trigonal bipyramid, edges with two equivalent S(2)Tb3Ce2 trigonal bipyramids, and edges with two equivalent S(1)Tb4Ce trigonal bipyramids. In the second S site, S(2) is bonded to one Tb(4), two equivalent Tb(1), and two equivalent Ce(1) atoms to form STb3Ce2 trigonal bipyramids that share  a cornercorner with one S(6)Tb4 tetrahedra, corners with four equivalent S(5)Tb3Ce tetrahedra, corners with two equivalent S(3)Tb5 trigonal bipyramids, corners with two equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(5)Tb3Ce tetrahedra,  an edgeedge with one S(3)Tb5 trigonal bipyramid, edges with two equivalent S(2)Tb3Ce2 trigonal bipyramids, and edges with two equivalent S(1)Tb4Ce trigonal bipyramids. In the third S site, S(3) is bonded to one Tb(2), two equivalent Tb(1), and two equivalent Tb(3) atoms to form distorted STb5 trigonal bipyramids that share corners with four equivalent S(5)Tb3Ce tetrahedra, corners with two equivalent S(2)Tb3Ce2 trigonal bipyramids, corners with two equivalent S(1)Tb4Ce trigonal bipyramids, corners with two equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(5)Tb3Ce tetrahedra, edges with two equivalent S(6)Tb4 tetrahedra,  an edgeedge with one S(2)Tb3Ce2 trigonal bipyramid, edges with two equivalent S(3)Tb5 trigonal bipyramids, and edges with three equivalent S(4)Tb5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Tb(1), two equivalent Tb(2), and two equivalent Tb(3) atoms to form distorted STb5 trigonal bipyramids that share corners with four equivalent S(6)Tb4 tetrahedra, corners with two equivalent S(2)Tb3Ce2 trigonal bipyramids, corners with two equivalent S(1)Tb4Ce trigonal bipyramids, corners with two equivalent S(3)Tb5 trigonal bipyramids,  an edgeedge with one S(6)Tb4 tetrahedra, edges with two equivalent S(5)Tb3Ce tetrahedra,  an edgeedge with one S(1)Tb4Ce trigonal bipyramid, edges with two equivalent S(4)Tb5 trigonal bipyramids, and edges with three equivalent S(3)Tb5 trigonal bipyramids. In the fifth S site, S(5) is bonded to one Tb(3), two equivalent Tb(1), and one Ce(1) atom to form STb3Ce tetrahedra that share  a cornercorner with one S(6)Tb4 tetrahedra, corners with two equivalent S(5)Tb3Ce tetrahedra,  a cornercorner with one S(1)Tb4Ce trigonal bipyramid, corners with four equivalent S(2)Tb3Ce2 trigonal bipyramids, corners with four equivalent S(3)Tb5 trigonal bipyramids,  an edgeedge with one S(2)Tb3Ce2 trigonal bipyramid,  an edgeedge with one S(3)Tb5 trigonal bipyramid, and edges with two equivalent S(4)Tb5 trigonal bipyramids. In the sixth S site, S(6) is bonded to one Tb(3), one Tb(4), and two equivalent Tb(2) atoms to form distorted STb4 tetrahedra that share  a cornercorner with one S(5)Tb3Ce tetrahedra, corners with two equivalent S(6)Tb4 tetrahedra,  a cornercorner with one S(2)Tb3Ce2 trigonal bipyramid, corners with four equivalent S(1)Tb4Ce trigonal bipyramids, corners with four equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(1)Tb4Ce trigonal bipyramid,  an edgeedge with one S(4)Tb5 trigonal bipyramid, and edges with two equivalent S(3)Tb5 trigonal bipyramids. In the seventh S site, S(7) is bonded in a rectangular see-saw-like geometry to two equivalent Tb(4) and two equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4CeS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.767
_cell_length_b   6.767
_cell_length_c   11.691
_cell_angle_alpha   75.919
_cell_angle_beta   75.919
_cell_angle_gamma   32.826
_symmetry_Int_Tables_number   1
_cell_volume   280.683
_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
  Tb  Tb0  1  0.699  0.699  0.186  1.0
  Tb  Tb1  1  0.301  0.301  0.813  1.0
  Tb  Tb2  1  0.000  0.000  0.998  1.0
  Tb  Tb3  1  0.113  0.113  0.581  1.0
  Ce  Ce4  1  0.888  0.888  0.420  1.0
  S  S5  1  0.738  0.738  0.653  1.0
  S  S6  1  0.254  0.254  0.349  1.0
  S  S7  1  0.342  0.342  0.050  1.0
  S  S8  1  0.659  0.659  0.949  1.0
  S  S9  1  0.044  0.044  0.210  1.0
  S  S10  1  0.958  0.958  0.785  1.0
  S  S11  1  0.504  0.504  0.503  1.0
[/CIF]
.
The structure described by Tb4CeS7 crystallizes in the monoclinic Cm space group. There are four inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to one S(4), two equivalent S(2), two equivalent S(3), and two equivalent S(5) atoms to form distorted TbS7 pentagonal bipyramids that share corners with two equivalent Tb(3)S6 octahedra, corners with two equivalent Tb(4)S6 octahedra, corners with four equivalent Ce(1)S6 octahedra,  an edgeedge with one Ce(1)S6 octahedra, edges with three equivalent Tb(3)S6 octahedra, edges with two equivalent Tb(2)S7 pentagonal bipyramids, and faces with two equivalent Tb(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 22-65°. In the second Tb site, Tb(2) is bonded to one S(3), two equivalent S(1), two equivalent S(4), and two equivalent S(6) atoms to form distorted TbS7 pentagonal bipyramids that share corners with two equivalent Tb(3)S6 octahedra, corners with two equivalent Ce(1)S6 octahedra, corners with four equivalent Tb(4)S6 octahedra,  an edgeedge with one Tb(4)S6 octahedra, edges with three equivalent Tb(3)S6 octahedra, edges with two equivalent Tb(1)S7 pentagonal bipyramids, and faces with two equivalent Tb(2)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 22-68°. In the third Tb site, Tb(3) is bonded to one S(5), one S(6), two equivalent S(3), and two equivalent S(4) atoms to form TbS6 octahedra that share  a cornercorner with one Tb(4)S6 octahedra,  a cornercorner with one Ce(1)S6 octahedra, corners with two equivalent Tb(1)S7 pentagonal bipyramids, corners with two equivalent Tb(2)S7 pentagonal bipyramids, edges with two equivalent Tb(3)S6 octahedra, edges with three equivalent Tb(1)S7 pentagonal bipyramids, and edges with three equivalent Tb(2)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 57-58°. In the fourth Tb site, Tb(4) is bonded to one S(2), one S(6), two equivalent S(1), and two equivalent S(7) atoms to form TbS6 octahedra that share  a cornercorner with one Tb(3)S6 octahedra, corners with two equivalent Ce(1)S6 octahedra, corners with two equivalent Tb(1)S7 pentagonal bipyramids, corners with four equivalent Tb(2)S7 pentagonal bipyramids, edges with two equivalent Tb(4)S6 octahedra, edges with three equivalent Ce(1)S6 octahedra, and  an edgeedge with one Tb(2)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 2-58°. Ce(1) is bonded to one S(1), one S(5), two equivalent S(2), and two equivalent S(7) atoms to form CeS6 octahedra that share  a cornercorner with one Tb(3)S6 octahedra, corners with two equivalent Tb(4)S6 octahedra, corners with two equivalent Tb(2)S7 pentagonal bipyramids, corners with four equivalent Tb(1)S7 pentagonal bipyramids, edges with two equivalent Ce(1)S6 octahedra, edges with three equivalent Tb(4)S6 octahedra, and  an edgeedge with one Tb(1)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 2-57°. There are seven inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Tb(2), two equivalent Tb(4), and one Ce(1) atom to form STb4Ce trigonal bipyramids that share  a cornercorner with one S(5)Tb3Ce tetrahedra, corners with four equivalent S(6)Tb4 tetrahedra, corners with two equivalent S(3)Tb5 trigonal bipyramids, corners with two equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(6)Tb4 tetrahedra,  an edgeedge with one S(4)Tb5 trigonal bipyramid, edges with two equivalent S(2)Tb3Ce2 trigonal bipyramids, and edges with two equivalent S(1)Tb4Ce trigonal bipyramids. In the second S site, S(2) is bonded to one Tb(4), two equivalent Tb(1), and two equivalent Ce(1) atoms to form STb3Ce2 trigonal bipyramids that share  a cornercorner with one S(6)Tb4 tetrahedra, corners with four equivalent S(5)Tb3Ce tetrahedra, corners with two equivalent S(3)Tb5 trigonal bipyramids, corners with two equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(5)Tb3Ce tetrahedra,  an edgeedge with one S(3)Tb5 trigonal bipyramid, edges with two equivalent S(2)Tb3Ce2 trigonal bipyramids, and edges with two equivalent S(1)Tb4Ce trigonal bipyramids. In the third S site, S(3) is bonded to one Tb(2), two equivalent Tb(1), and two equivalent Tb(3) atoms to form distorted STb5 trigonal bipyramids that share corners with four equivalent S(5)Tb3Ce tetrahedra, corners with two equivalent S(2)Tb3Ce2 trigonal bipyramids, corners with two equivalent S(1)Tb4Ce trigonal bipyramids, corners with two equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(5)Tb3Ce tetrahedra, edges with two equivalent S(6)Tb4 tetrahedra,  an edgeedge with one S(2)Tb3Ce2 trigonal bipyramid, edges with two equivalent S(3)Tb5 trigonal bipyramids, and edges with three equivalent S(4)Tb5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Tb(1), two equivalent Tb(2), and two equivalent Tb(3) atoms to form distorted STb5 trigonal bipyramids that share corners with four equivalent S(6)Tb4 tetrahedra, corners with two equivalent S(2)Tb3Ce2 trigonal bipyramids, corners with two equivalent S(1)Tb4Ce trigonal bipyramids, corners with two equivalent S(3)Tb5 trigonal bipyramids,  an edgeedge with one S(6)Tb4 tetrahedra, edges with two equivalent S(5)Tb3Ce tetrahedra,  an edgeedge with one S(1)Tb4Ce trigonal bipyramid, edges with two equivalent S(4)Tb5 trigonal bipyramids, and edges with three equivalent S(3)Tb5 trigonal bipyramids. In the fifth S site, S(5) is bonded to one Tb(3), two equivalent Tb(1), and one Ce(1) atom to form STb3Ce tetrahedra that share  a cornercorner with one S(6)Tb4 tetrahedra, corners with two equivalent S(5)Tb3Ce tetrahedra,  a cornercorner with one S(1)Tb4Ce trigonal bipyramid, corners with four equivalent S(2)Tb3Ce2 trigonal bipyramids, corners with four equivalent S(3)Tb5 trigonal bipyramids,  an edgeedge with one S(2)Tb3Ce2 trigonal bipyramid,  an edgeedge with one S(3)Tb5 trigonal bipyramid, and edges with two equivalent S(4)Tb5 trigonal bipyramids. In the sixth S site, S(6) is bonded to one Tb(3), one Tb(4), and two equivalent Tb(2) atoms to form distorted STb4 tetrahedra that share  a cornercorner with one S(5)Tb3Ce tetrahedra, corners with two equivalent S(6)Tb4 tetrahedra,  a cornercorner with one S(2)Tb3Ce2 trigonal bipyramid, corners with four equivalent S(1)Tb4Ce trigonal bipyramids, corners with four equivalent S(4)Tb5 trigonal bipyramids,  an edgeedge with one S(1)Tb4Ce trigonal bipyramid,  an edgeedge with one S(4)Tb5 trigonal bipyramid, and edges with two equivalent S(3)Tb5 trigonal bipyramids. In the seventh S site, S(7) is bonded in a rectangular see-saw-like geometry to two equivalent Tb(4) and two equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4CeS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.767
_cell_length_b   6.767
_cell_length_c   11.691
_cell_angle_alpha   75.919
_cell_angle_beta   75.919
_cell_angle_gamma   32.826
_symmetry_Int_Tables_number   1
_cell_volume   280.683
_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
  Tb  Tb0  1  0.699  0.699  0.186  1.0
  Tb  Tb1  1  0.301  0.301  0.813  1.0
  Tb  Tb2  1  0.000  0.000  0.998  1.0
  Tb  Tb3  1  0.113  0.113  0.581  1.0
  Ce  Ce4  1  0.888  0.888  0.420  1.0
  S  S5  1  0.738  0.738  0.653  1.0
  S  S6  1  0.254  0.254  0.349  1.0
  S  S7  1  0.342  0.342  0.050  1.0
  S  S8  1  0.659  0.659  0.949  1.0
  S  S9  1  0.044  0.044  0.210  1.0
  S  S10  1  0.958  0.958  0.785  1.0
  S  S11  1  0.504  0.504  0.503  1.0
[/CIF]
.