The material structure described by Cs3Sm7Te12 crystallizes in the orthorhombic Pmn2_1 space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 7-coordinate geometry to one Te(7), two equivalent Te(12), two equivalent Te(4), and two equivalent Te(6) atoms. In the second Cs site, Cs(2) is bonded in a 7-coordinate geometry to one Te(8), two equivalent Te(11), two equivalent Te(3), and two equivalent Te(5) atoms. In the third Cs site, Cs(3) is bonded in a 6-coordinate geometry to one Te(3), one Te(5), two equivalent Te(1), and two equivalent Te(2) atoms. There are seven inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one Te(1), one Te(11), two equivalent Te(4), and two equivalent Te(9) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second Sm site, Sm(2) is bonded to one Te(12), one Te(2), two equivalent Te(10), and two equivalent Te(3) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the third Sm site, Sm(3) is bonded to one Te(3), one Te(7), two equivalent Te(12), and two equivalent Te(9) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the fourth Sm site, Sm(4) is bonded to one Te(4), one Te(8), two equivalent Te(10), and two equivalent Te(11) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the fifth Sm site, Sm(5) is bonded to one Te(7), one Te(8), two equivalent Te(5), and two equivalent Te(6) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles are 10°. In the sixth Sm site, Sm(6) is bonded to one Te(5), one Te(9), two equivalent Te(1), and two equivalent Te(7) atoms to form edge-sharing SmTe6 octahedra. In the seventh Sm site, Sm(7) is bonded to one Te(10), one Te(6), two equivalent Te(2), and two equivalent Te(8) atoms to form edge-sharing SmTe6 octahedra. There are twelve inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Cs(3), one Sm(1), and two equivalent Sm(6) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(2)Cs2Sm3 square pyramids,  a cornercorner with one Te(11)Cs2Sm3 trigonal bipyramid, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(7)CsSm4 trigonal bipyramids,  an edgeedge with one Te(2)Cs2Sm3 square pyramid, edges with two equivalent Te(9)Sm5 square pyramids,  an edgeedge with one Te(7)CsSm4 trigonal bipyramid, and edges with two equivalent Te(1)Cs2Sm3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 41°. In the second Te site, Te(2) is bonded to two equivalent Cs(3), one Sm(2), and two equivalent Sm(7) atoms to form distorted TeCs2Sm3 square pyramids that share  a cornercorner with one Te(12)Cs2Sm3 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(8)CsSm4 trigonal bipyramids, edges with two equivalent Te(3)Cs3Sm3 octahedra, edges with two equivalent Te(2)Cs2Sm3 square pyramids, edges with two equivalent Te(10)Sm5 square pyramids,  an edgeedge with one Te(1)Cs2Sm3 trigonal bipyramid, and  an edgeedge with one Te(8)CsSm4 trigonal bipyramid. In the third Te site, Te(3) is bonded to one Cs(3), two equivalent Cs(2), one Sm(3), and two equivalent Sm(2) atoms to form distorted TeCs3Sm3 octahedra that share corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids,  a cornercorner with one Te(7)CsSm4 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(8)CsSm4 trigonal bipyramids, edges with two equivalent Te(3)Cs3Sm3 octahedra,  an edgeedge with one Te(10)Sm5 square pyramid, edges with two equivalent Te(2)Cs2Sm3 square pyramids,  an edgeedge with one Te(11)Cs2Sm3 trigonal bipyramid, and edges with two equivalent Te(12)Cs2Sm3 trigonal bipyramids. In the fourth Te site, Te(4) is bonded to two equivalent Cs(1), one Sm(4), and two equivalent Sm(1) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids,  a cornercorner with one Te(8)CsSm4 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(7)CsSm4 trigonal bipyramids,  an edgeedge with one Te(9)Sm5 square pyramid,  an edgeedge with one Te(12)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(6)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(4)Cs2Sm3 trigonal bipyramids. In the fifth Te site, Te(5) is bonded in a 6-coordinate geometry to one Cs(3), two equivalent Cs(2), one Sm(6), and two equivalent Sm(5) atoms. In the sixth Te site, Te(6) is bonded to two equivalent Cs(1), one Sm(7), and two equivalent Sm(5) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share  a cornercorner with one Te(10)Sm5 square pyramid, corners with two equivalent Te(2)Cs2Sm3 square pyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids,  an edgeedge with one Te(12)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(4)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(7)CsSm4 trigonal bipyramids, and edges with two equivalent Te(8)CsSm4 trigonal bipyramids. In the seventh Te site, Te(7) is bonded to one Cs(1), one Sm(3), one Sm(5), and two equivalent Sm(6) atoms to form distorted TeCsSm4 trigonal bipyramids that share  a cornercorner with one Te(3)Cs3Sm3 octahedra,  a cornercorner with one Te(8)CsSm4 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(7)CsSm4 trigonal bipyramids, edges with two equivalent Te(9)Sm5 square pyramids,  an edgeedge with one Te(1)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(6)Cs2Sm3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 10°. In the eighth Te site, Te(8) is bonded to one Cs(2), one Sm(4), one Sm(5), and two equivalent Sm(7) atoms to form distorted TeCsSm4 trigonal bipyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(2)Cs2Sm3 square pyramids,  a cornercorner with one Te(4)Cs2Sm3 trigonal bipyramid,  a cornercorner with one Te(7)CsSm4 trigonal bipyramid, corners with two equivalent Te(8)CsSm4 trigonal bipyramids,  an edgeedge with one Te(2)Cs2Sm3 square pyramid, edges with two equivalent Te(10)Sm5 square pyramids, edges with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(6)Cs2Sm3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 36°. In the ninth Te site, Te(9) is bonded to one Sm(6), two equivalent Sm(1), and two equivalent Sm(3) atoms to form TeSm5 square pyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(9)Sm5 square pyramids,  an edgeedge with one Te(12)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(4)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(7)CsSm4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 80°. In the tenth Te site, Te(10) is bonded to one Sm(7), two equivalent Sm(2), and two equivalent Sm(4) atoms to form TeSm5 square pyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra,  a cornercorner with one Te(6)Cs2Sm3 trigonal bipyramid, corners with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids,  an edgeedge with one Te(3)Cs3Sm3 octahedra, edges with two equivalent Te(2)Cs2Sm3 square pyramids, edges with two equivalent Te(10)Sm5 square pyramids,  an edgeedge with one Te(11)Cs2Sm3 trigonal bipyramid, and edges with two equivalent Te(8)CsSm4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 5°. In the eleventh Te site, Te(11) is bonded to two equivalent Cs(2), one Sm(1), and two equivalent Sm(4) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids,  a cornercorner with one Te(1)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(3)Cs3Sm3 octahedra,  an edgeedge with one Te(10)Sm5 square pyramid, edges with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(8)CsSm4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 54°. In the twelfth Te site, Te(12) is bonded to two equivalent Cs(1), one Sm(2), and two equivalent Sm(3) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share  a cornercorner with one Te(2)Cs2Sm3 square pyramid, corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(3)Cs3Sm3 octahedra,  an edgeedge with one Te(9)Sm5 square pyramid,  an edgeedge with one Te(4)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(6)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(7)CsSm4 trigonal bipyramids. is represented by the CIF file [CIF]
data_Cs3Sm7Te12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.532
_cell_length_b   13.882
_cell_length_c   28.654
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1802.550
_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
  Cs  Cs0  1  0.500  0.030  0.372  1.0
  Cs  Cs1  1  0.500  0.461  0.634  1.0
  Cs  Cs2  1  0.000  0.539  0.134  1.0
  Cs  Cs3  1  0.000  0.970  0.872  1.0
  Cs  Cs4  1  0.500  0.308  0.027  1.0
  Cs  Cs5  1  0.000  0.692  0.527  1.0
  Sm  Sm6  1  0.500  0.670  0.318  1.0
  Sm  Sm7  1  0.500  0.832  0.682  1.0
  Sm  Sm8  1  0.000  0.168  0.182  1.0
  Sm  Sm9  1  0.000  0.330  0.818  1.0
  Sm  Sm10  1  0.500  0.338  0.287  1.0
  Sm  Sm11  1  0.500  0.160  0.713  1.0
  Sm  Sm12  1  0.000  0.840  0.213  1.0
  Sm  Sm13  1  0.000  0.662  0.787  1.0
  Sm  Sm14  1  0.500  0.252  0.500  1.0
  Sm  Sm15  1  0.000  0.748  0.000  1.0
  Sm  Sm16  1  0.500  0.534  0.915  1.0
  Sm  Sm17  1  0.500  0.965  0.083  1.0
  Sm  Sm18  1  0.000  0.035  0.583  1.0
  Sm  Sm19  1  0.000  0.466  0.415  1.0
  Te  Te20  1  0.500  0.622  0.424  1.0
  Te  Te21  1  0.500  0.881  0.576  1.0
  Te  Te22  1  0.000  0.119  0.076  1.0
  Te  Te23  1  0.000  0.378  0.924  1.0
  Te  Te24  1  0.500  0.322  0.176  1.0
  Te  Te25  1  0.500  0.178  0.822  1.0
  Te  Te26  1  0.000  0.822  0.322  1.0
  Te  Te27  1  0.000  0.678  0.676  1.0
  Te  Te28  1  0.500  0.591  0.020  1.0
  Te  Te29  1  0.500  0.900  0.981  1.0
  Te  Te30  1  0.000  0.100  0.481  1.0
  Te  Te31  1  0.000  0.409  0.520  1.0
  Te  Te32  1  0.500  0.313  0.396  1.0
  Te  Te33  1  0.500  0.187  0.604  1.0
  Te  Te34  1  0.000  0.813  0.104  1.0
  Te  Te35  1  0.000  0.687  0.896  1.0
  Te  Te36  1  0.500  0.498  0.802  1.0
  Te  Te37  1  0.500  0.003  0.197  1.0
  Te  Te38  1  0.000  0.997  0.697  1.0
  Te  Te39  1  0.000  0.502  0.302  1.0
  Te  Te40  1  0.500  0.689  0.211  1.0
  Te  Te41  1  0.500  0.813  0.790  1.0
  Te  Te42  1  0.000  0.187  0.290  1.0
  Te  Te43  1  0.000  0.311  0.711  1.0
[/CIF]
.
The material structure described by Cs3Sm7Te12 crystallizes in the orthorhombic Pmn2_1 space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 7-coordinate geometry to one Te(7), two equivalent Te(12), two equivalent Te(4), and two equivalent Te(6) atoms. In the second Cs site, Cs(2) is bonded in a 7-coordinate geometry to one Te(8), two equivalent Te(11), two equivalent Te(3), and two equivalent Te(5) atoms. In the third Cs site, Cs(3) is bonded in a 6-coordinate geometry to one Te(3), one Te(5), two equivalent Te(1), and two equivalent Te(2) atoms. There are seven inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one Te(1), one Te(11), two equivalent Te(4), and two equivalent Te(9) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second Sm site, Sm(2) is bonded to one Te(12), one Te(2), two equivalent Te(10), and two equivalent Te(3) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the third Sm site, Sm(3) is bonded to one Te(3), one Te(7), two equivalent Te(12), and two equivalent Te(9) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the fourth Sm site, Sm(4) is bonded to one Te(4), one Te(8), two equivalent Te(10), and two equivalent Te(11) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the fifth Sm site, Sm(5) is bonded to one Te(7), one Te(8), two equivalent Te(5), and two equivalent Te(6) atoms to form a mixture of edge and corner-sharing SmTe6 octahedra. The corner-sharing octahedral tilt angles are 10°. In the sixth Sm site, Sm(6) is bonded to one Te(5), one Te(9), two equivalent Te(1), and two equivalent Te(7) atoms to form edge-sharing SmTe6 octahedra. In the seventh Sm site, Sm(7) is bonded to one Te(10), one Te(6), two equivalent Te(2), and two equivalent Te(8) atoms to form edge-sharing SmTe6 octahedra. There are twelve inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Cs(3), one Sm(1), and two equivalent Sm(6) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(2)Cs2Sm3 square pyramids,  a cornercorner with one Te(11)Cs2Sm3 trigonal bipyramid, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(7)CsSm4 trigonal bipyramids,  an edgeedge with one Te(2)Cs2Sm3 square pyramid, edges with two equivalent Te(9)Sm5 square pyramids,  an edgeedge with one Te(7)CsSm4 trigonal bipyramid, and edges with two equivalent Te(1)Cs2Sm3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 41°. In the second Te site, Te(2) is bonded to two equivalent Cs(3), one Sm(2), and two equivalent Sm(7) atoms to form distorted TeCs2Sm3 square pyramids that share  a cornercorner with one Te(12)Cs2Sm3 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(8)CsSm4 trigonal bipyramids, edges with two equivalent Te(3)Cs3Sm3 octahedra, edges with two equivalent Te(2)Cs2Sm3 square pyramids, edges with two equivalent Te(10)Sm5 square pyramids,  an edgeedge with one Te(1)Cs2Sm3 trigonal bipyramid, and  an edgeedge with one Te(8)CsSm4 trigonal bipyramid. In the third Te site, Te(3) is bonded to one Cs(3), two equivalent Cs(2), one Sm(3), and two equivalent Sm(2) atoms to form distorted TeCs3Sm3 octahedra that share corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids,  a cornercorner with one Te(7)CsSm4 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(8)CsSm4 trigonal bipyramids, edges with two equivalent Te(3)Cs3Sm3 octahedra,  an edgeedge with one Te(10)Sm5 square pyramid, edges with two equivalent Te(2)Cs2Sm3 square pyramids,  an edgeedge with one Te(11)Cs2Sm3 trigonal bipyramid, and edges with two equivalent Te(12)Cs2Sm3 trigonal bipyramids. In the fourth Te site, Te(4) is bonded to two equivalent Cs(1), one Sm(4), and two equivalent Sm(1) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids,  a cornercorner with one Te(8)CsSm4 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(7)CsSm4 trigonal bipyramids,  an edgeedge with one Te(9)Sm5 square pyramid,  an edgeedge with one Te(12)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(6)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(4)Cs2Sm3 trigonal bipyramids. In the fifth Te site, Te(5) is bonded in a 6-coordinate geometry to one Cs(3), two equivalent Cs(2), one Sm(6), and two equivalent Sm(5) atoms. In the sixth Te site, Te(6) is bonded to two equivalent Cs(1), one Sm(7), and two equivalent Sm(5) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share  a cornercorner with one Te(10)Sm5 square pyramid, corners with two equivalent Te(2)Cs2Sm3 square pyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids,  an edgeedge with one Te(12)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(4)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(7)CsSm4 trigonal bipyramids, and edges with two equivalent Te(8)CsSm4 trigonal bipyramids. In the seventh Te site, Te(7) is bonded to one Cs(1), one Sm(3), one Sm(5), and two equivalent Sm(6) atoms to form distorted TeCsSm4 trigonal bipyramids that share  a cornercorner with one Te(3)Cs3Sm3 octahedra,  a cornercorner with one Te(8)CsSm4 trigonal bipyramid, corners with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(7)CsSm4 trigonal bipyramids, edges with two equivalent Te(9)Sm5 square pyramids,  an edgeedge with one Te(1)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(6)Cs2Sm3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 10°. In the eighth Te site, Te(8) is bonded to one Cs(2), one Sm(4), one Sm(5), and two equivalent Sm(7) atoms to form distorted TeCsSm4 trigonal bipyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(2)Cs2Sm3 square pyramids,  a cornercorner with one Te(4)Cs2Sm3 trigonal bipyramid,  a cornercorner with one Te(7)CsSm4 trigonal bipyramid, corners with two equivalent Te(8)CsSm4 trigonal bipyramids,  an edgeedge with one Te(2)Cs2Sm3 square pyramid, edges with two equivalent Te(10)Sm5 square pyramids, edges with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(6)Cs2Sm3 trigonal bipyramids. The corner-sharing octahedral tilt angles are 36°. In the ninth Te site, Te(9) is bonded to one Sm(6), two equivalent Sm(1), and two equivalent Sm(3) atoms to form TeSm5 square pyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(9)Sm5 square pyramids,  an edgeedge with one Te(12)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(4)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(1)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(7)CsSm4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 80°. In the tenth Te site, Te(10) is bonded to one Sm(7), two equivalent Sm(2), and two equivalent Sm(4) atoms to form TeSm5 square pyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra,  a cornercorner with one Te(6)Cs2Sm3 trigonal bipyramid, corners with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids,  an edgeedge with one Te(3)Cs3Sm3 octahedra, edges with two equivalent Te(2)Cs2Sm3 square pyramids, edges with two equivalent Te(10)Sm5 square pyramids,  an edgeedge with one Te(11)Cs2Sm3 trigonal bipyramid, and edges with two equivalent Te(8)CsSm4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 5°. In the eleventh Te site, Te(11) is bonded to two equivalent Cs(2), one Sm(1), and two equivalent Sm(4) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share corners with two equivalent Te(3)Cs3Sm3 octahedra, corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids,  a cornercorner with one Te(1)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(3)Cs3Sm3 octahedra,  an edgeedge with one Te(10)Sm5 square pyramid, edges with two equivalent Te(11)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(8)CsSm4 trigonal bipyramids. The corner-sharing octahedral tilt angles are 54°. In the twelfth Te site, Te(12) is bonded to two equivalent Cs(1), one Sm(2), and two equivalent Sm(3) atoms to form distorted TeCs2Sm3 trigonal bipyramids that share  a cornercorner with one Te(2)Cs2Sm3 square pyramid, corners with two equivalent Te(10)Sm5 square pyramids, corners with two equivalent Te(9)Sm5 square pyramids, corners with two equivalent Te(4)Cs2Sm3 trigonal bipyramids, corners with two equivalent Te(6)Cs2Sm3 trigonal bipyramids, edges with two equivalent Te(3)Cs3Sm3 octahedra,  an edgeedge with one Te(9)Sm5 square pyramid,  an edgeedge with one Te(4)Cs2Sm3 trigonal bipyramid,  an edgeedge with one Te(6)Cs2Sm3 trigonal bipyramid, edges with two equivalent Te(12)Cs2Sm3 trigonal bipyramids, and edges with two equivalent Te(7)CsSm4 trigonal bipyramids. is represented by the CIF file [CIF]
data_Cs3Sm7Te12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.532
_cell_length_b   13.882
_cell_length_c   28.654
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1802.550
_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
  Cs  Cs0  1  0.500  0.030  0.372  1.0
  Cs  Cs1  1  0.500  0.461  0.634  1.0
  Cs  Cs2  1  0.000  0.539  0.134  1.0
  Cs  Cs3  1  0.000  0.970  0.872  1.0
  Cs  Cs4  1  0.500  0.308  0.027  1.0
  Cs  Cs5  1  0.000  0.692  0.527  1.0
  Sm  Sm6  1  0.500  0.670  0.318  1.0
  Sm  Sm7  1  0.500  0.832  0.682  1.0
  Sm  Sm8  1  0.000  0.168  0.182  1.0
  Sm  Sm9  1  0.000  0.330  0.818  1.0
  Sm  Sm10  1  0.500  0.338  0.287  1.0
  Sm  Sm11  1  0.500  0.160  0.713  1.0
  Sm  Sm12  1  0.000  0.840  0.213  1.0
  Sm  Sm13  1  0.000  0.662  0.787  1.0
  Sm  Sm14  1  0.500  0.252  0.500  1.0
  Sm  Sm15  1  0.000  0.748  0.000  1.0
  Sm  Sm16  1  0.500  0.534  0.915  1.0
  Sm  Sm17  1  0.500  0.965  0.083  1.0
  Sm  Sm18  1  0.000  0.035  0.583  1.0
  Sm  Sm19  1  0.000  0.466  0.415  1.0
  Te  Te20  1  0.500  0.622  0.424  1.0
  Te  Te21  1  0.500  0.881  0.576  1.0
  Te  Te22  1  0.000  0.119  0.076  1.0
  Te  Te23  1  0.000  0.378  0.924  1.0
  Te  Te24  1  0.500  0.322  0.176  1.0
  Te  Te25  1  0.500  0.178  0.822  1.0
  Te  Te26  1  0.000  0.822  0.322  1.0
  Te  Te27  1  0.000  0.678  0.676  1.0
  Te  Te28  1  0.500  0.591  0.020  1.0
  Te  Te29  1  0.500  0.900  0.981  1.0
  Te  Te30  1  0.000  0.100  0.481  1.0
  Te  Te31  1  0.000  0.409  0.520  1.0
  Te  Te32  1  0.500  0.313  0.396  1.0
  Te  Te33  1  0.500  0.187  0.604  1.0
  Te  Te34  1  0.000  0.813  0.104  1.0
  Te  Te35  1  0.000  0.687  0.896  1.0
  Te  Te36  1  0.500  0.498  0.802  1.0
  Te  Te37  1  0.500  0.003  0.197  1.0
  Te  Te38  1  0.000  0.997  0.697  1.0
  Te  Te39  1  0.000  0.502  0.302  1.0
  Te  Te40  1  0.500  0.689  0.211  1.0
  Te  Te41  1  0.500  0.813  0.790  1.0
  Te  Te42  1  0.000  0.187  0.290  1.0
  Te  Te43  1  0.000  0.311  0.711  1.0
[/CIF]
.