The material structure described by NbCr3(AgS4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one S(1), one S(13), one S(3), one S(5), one S(7), and one S(9) atom to form NbS6 octahedra that share  a cornercorner with one Ag(1)S6 pentagonal pyramid, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Cr(4)S6 octahedra, edges with two equivalent Cr(6)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the second Nb site, Nb(2) is bonded to one S(10), one S(12), one S(14), one S(16), one S(4), and one S(8) atom to form NbS6 octahedra that share edges with two equivalent Cr(1)S6 octahedra, edges with two equivalent Cr(3)S6 octahedra, edges with two equivalent Cr(5)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. There are six inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(10), one S(14), one S(2), one S(4), one S(6), and one S(8) atom to form CrS6 octahedra that share  a cornercorner with one Ag(1)S6 pentagonal pyramid, edges with two equivalent Nb(2)S6 octahedra, edges with two equivalent Cr(3)S6 octahedra, edges with two equivalent Cr(5)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the second Cr site, Cr(2) is bonded to one S(1), one S(11), one S(15), one S(3), one S(5), and one S(7) atom to form CrS6 octahedra that share corners with two equivalent Ag(1)S6 pentagonal pyramids, edges with two equivalent Nb(1)S6 octahedra, edges with two equivalent Cr(4)S6 octahedra, and edges with two equivalent Cr(6)S6 octahedra. In the third Cr site, Cr(3) is bonded to one S(12), one S(16), one S(2), one S(4), one S(6), and one S(8) atom to form CrS6 octahedra that share corners with two equivalent Ag(1)S6 pentagonal pyramids, edges with two equivalent Nb(2)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Cr(5)S6 octahedra. In the fourth Cr site, Cr(4) is bonded to one S(1), one S(11), one S(13), one S(15), one S(5), and one S(9) atom to form CrS6 octahedra that share edges with two equivalent Nb(1)S6 octahedra, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Cr(6)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the fifth Cr site, Cr(5) is bonded to one S(10), one S(12), one S(14), one S(16), one S(2), and one S(6) atom to form CrS6 octahedra that share edges with two equivalent Nb(2)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, edges with two equivalent Cr(3)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the sixth Cr site, Cr(6) is bonded to one S(11), one S(13), one S(15), one S(3), one S(7), and one S(9) atom to form CrS6 octahedra that share edges with two equivalent Nb(1)S6 octahedra, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Cr(4)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(10), one S(3), one S(4), one S(5), one S(6), and one S(9) atom to form distorted AgS6 pentagonal pyramids that share  a cornercorner with one Nb(1)S6 octahedra,  a cornercorner with one Cr(1)S6 octahedra, corners with two equivalent Cr(2)S6 octahedra, corners with two equivalent Cr(3)S6 octahedra,  an edgeedge with one Nb(1)S6 octahedra,  an edgeedge with one Nb(2)S6 octahedra,  an edgeedge with one Cr(1)S6 octahedra,  an edgeedge with one Cr(4)S6 octahedra,  an edgeedge with one Cr(5)S6 octahedra, and  an edgeedge with one Cr(6)S6 octahedra. The corner-sharing octahedral tilt angles range from 5-14°. In the second Ag site, Ag(2) is bonded in a 6-coordinate geometry to one S(1), one S(11), one S(12), one S(2), one S(7), and one S(8) atom. In the third Ag site, Ag(3) is bonded in a 6-coordinate geometry to one S(1), one S(13), one S(14), one S(2), one S(7), and one S(8) atom. In the fourth Ag site, Ag(4) is bonded in a 6-coordinate geometry to one S(15), one S(16), one S(3), one S(4), one S(5), and one S(6) atom. There are sixteen inequivalent S sites. In the first S site, S(1) is bonded to one Nb(1), one Cr(2), one Cr(4), one Ag(2), and one Ag(3) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(5)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(2)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(3)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(5)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(8)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(7)NbCr2Ag2 trigonal bipyramids. In the second S site, S(2) is bonded to one Cr(1), one Cr(3), one Cr(5), one Ag(2), and one Ag(3) atom to form distorted SCr3Ag2 trigonal bipyramids that share  a cornercorner with one S(6)Cr3Ag2 trigonal bipyramid, corners with two equivalent S(1)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(4)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(6)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(7)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(8)NbCr2Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the third S site, S(3) is bonded to one Nb(1), one Cr(2), one Cr(6), one Ag(1), and one Ag(4) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(7)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(1)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(4)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(6)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(7)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(5)NbCr2Ag2 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Nb(2), one Cr(1), one Cr(3), one Ag(1), and one Ag(4) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(8)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(2)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(3)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(5)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(8)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(6)Cr3Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the fifth S site, S(5) is bonded to one Nb(1), one Cr(2), one Cr(4), one Ag(1), and one Ag(4) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(1)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(6)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(7)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(1)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(4)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(3)NbCr2Ag2 trigonal bipyramids. In the sixth S site, S(6) is bonded to one Cr(1), one Cr(3), one Cr(5), one Ag(1), and one Ag(4) atom to form distorted SCr3Ag2 trigonal bipyramids that share  a cornercorner with one S(2)Cr3Ag2 trigonal bipyramid, corners with two equivalent S(5)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(8)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(2)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(3)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(4)NbCr2Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the seventh S site, S(7) is bonded to one Nb(1), one Cr(2), one Cr(6), one Ag(2), and one Ag(3) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(3)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(5)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(8)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(2)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(3)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(1)NbCr2Ag2 trigonal bipyramids. In the eighth S site, S(8) is bonded to one Nb(2), one Cr(1), one Cr(3), one Ag(2), and one Ag(3) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(4)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(6)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(7)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(1)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(4)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(2)Cr3Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the ninth S site, S(9) is bonded in a rectangular see-saw-like geometry to one Nb(1), one Cr(4), one Cr(6), and one Ag(1) atom. In the tenth S site, S(10) is bonded in a rectangular see-saw-like geometry to one Nb(2), one Cr(1), one Cr(5), and one Ag(1) atom. In the eleventh S site, S(11) is bonded in a rectangular see-saw-like geometry to one Cr(2), one Cr(4), one Cr(6), and one Ag(2) atom. In the twelfth S site, S(12) is bonded in a rectangular see-saw-like geometry to one Nb(2), one Cr(3), one Cr(5), and one Ag(2) atom. In the thirteenth S site, S(13) is bonded in a rectangular see-saw-like geometry to one Nb(1), one Cr(4), one Cr(6), and one Ag(3) atom. In the fourteenth S site, S(14) is bonded in a rectangular see-saw-like geometry to one Nb(2), one Cr(1), one Cr(5), and one Ag(3) atom. In the fifteenth S site, S(15) is bonded in a rectangular see-saw-like geometry to one Cr(2), one Cr(4), one Cr(6), and one Ag(4) atom. In the sixteenth S site, S(16) is bonded to one Nb(2), one Cr(3), one Cr(5), and one Ag(4) atom to form SNbCr2Ag trigonal pyramids that share  a cornercorner with one S(6)Cr3Ag2 trigonal bipyramid,  a cornercorner with one S(3)NbCr2Ag2 trigonal bipyramid,  a cornercorner with one S(4)NbCr2Ag2 trigonal bipyramid,  a cornercorner with one S(5)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(2)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(6)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(4)NbCr2Ag2 trigonal bipyramid, and  an edgeedge with one S(8)NbCr2Ag2 trigonal bipyramid. is represented by the CIF file [CIF]
data_NbCr3(AgS4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.941
_cell_length_b   13.288
_cell_length_c   6.000
_cell_angle_alpha   90.230
_cell_angle_beta   90.261
_cell_angle_gamma   90.508
_symmetry_Int_Tables_number   1
_cell_volume   553.292
_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
  Nb  Nb0  1  0.019  0.252  0.993  1.0
  Nb  Nb1  1  0.230  0.751  0.499  1.0
  Cr  Cr2  1  0.003  0.751  0.001  1.0
  Cr  Cr3  1  0.493  0.251  0.005  1.0
  Cr  Cr4  1  0.499  0.749  0.000  1.0
  Cr  Cr5  1  0.248  0.249  0.504  1.0
  Cr  Cr6  1  0.758  0.750  0.502  1.0
  Cr  Cr7  1  0.750  0.249  0.506  1.0
  Ag  Ag8  1  0.981  0.998  0.343  1.0
  Ag  Ag9  1  0.517  0.502  0.633  1.0
  Ag  Ag10  1  0.988  0.497  0.023  1.0
  Ag  Ag11  1  0.511  0.001  0.954  1.0
  S  S12  1  0.258  0.360  0.825  1.0
  S  S13  1  0.747  0.651  0.834  1.0
  S  S14  1  0.741  0.149  0.168  1.0
  S  S15  1  0.249  0.857  0.160  1.0
  S  S16  1  0.249  0.142  0.179  1.0
  S  S17  1  0.757  0.849  0.169  1.0
  S  S18  1  0.738  0.353  0.837  1.0
  S  S19  1  0.248  0.643  0.840  1.0
  S  S20  1  0.001  0.143  0.659  1.0
  S  S21  1  0.998  0.858  0.677  1.0
  S  S22  1  0.500  0.346  0.344  1.0
  S  S23  1  0.509  0.651  0.338  1.0
  S  S24  1  0.002  0.353  0.341  1.0
  S  S25  1  0.995  0.642  0.325  1.0
  S  S26  1  0.498  0.153  0.673  1.0
  S  S27  1  0.510  0.849  0.668  1.0
[/CIF]
.
The material structure described by NbCr3(AgS4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one S(1), one S(13), one S(3), one S(5), one S(7), and one S(9) atom to form NbS6 octahedra that share  a cornercorner with one Ag(1)S6 pentagonal pyramid, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Cr(4)S6 octahedra, edges with two equivalent Cr(6)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the second Nb site, Nb(2) is bonded to one S(10), one S(12), one S(14), one S(16), one S(4), and one S(8) atom to form NbS6 octahedra that share edges with two equivalent Cr(1)S6 octahedra, edges with two equivalent Cr(3)S6 octahedra, edges with two equivalent Cr(5)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. There are six inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(10), one S(14), one S(2), one S(4), one S(6), and one S(8) atom to form CrS6 octahedra that share  a cornercorner with one Ag(1)S6 pentagonal pyramid, edges with two equivalent Nb(2)S6 octahedra, edges with two equivalent Cr(3)S6 octahedra, edges with two equivalent Cr(5)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the second Cr site, Cr(2) is bonded to one S(1), one S(11), one S(15), one S(3), one S(5), and one S(7) atom to form CrS6 octahedra that share corners with two equivalent Ag(1)S6 pentagonal pyramids, edges with two equivalent Nb(1)S6 octahedra, edges with two equivalent Cr(4)S6 octahedra, and edges with two equivalent Cr(6)S6 octahedra. In the third Cr site, Cr(3) is bonded to one S(12), one S(16), one S(2), one S(4), one S(6), and one S(8) atom to form CrS6 octahedra that share corners with two equivalent Ag(1)S6 pentagonal pyramids, edges with two equivalent Nb(2)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Cr(5)S6 octahedra. In the fourth Cr site, Cr(4) is bonded to one S(1), one S(11), one S(13), one S(15), one S(5), and one S(9) atom to form CrS6 octahedra that share edges with two equivalent Nb(1)S6 octahedra, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Cr(6)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the fifth Cr site, Cr(5) is bonded to one S(10), one S(12), one S(14), one S(16), one S(2), and one S(6) atom to form CrS6 octahedra that share edges with two equivalent Nb(2)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, edges with two equivalent Cr(3)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. In the sixth Cr site, Cr(6) is bonded to one S(11), one S(13), one S(15), one S(3), one S(7), and one S(9) atom to form CrS6 octahedra that share edges with two equivalent Nb(1)S6 octahedra, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Cr(4)S6 octahedra, and  an edgeedge with one Ag(1)S6 pentagonal pyramid. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(10), one S(3), one S(4), one S(5), one S(6), and one S(9) atom to form distorted AgS6 pentagonal pyramids that share  a cornercorner with one Nb(1)S6 octahedra,  a cornercorner with one Cr(1)S6 octahedra, corners with two equivalent Cr(2)S6 octahedra, corners with two equivalent Cr(3)S6 octahedra,  an edgeedge with one Nb(1)S6 octahedra,  an edgeedge with one Nb(2)S6 octahedra,  an edgeedge with one Cr(1)S6 octahedra,  an edgeedge with one Cr(4)S6 octahedra,  an edgeedge with one Cr(5)S6 octahedra, and  an edgeedge with one Cr(6)S6 octahedra. The corner-sharing octahedral tilt angles range from 5-14°. In the second Ag site, Ag(2) is bonded in a 6-coordinate geometry to one S(1), one S(11), one S(12), one S(2), one S(7), and one S(8) atom. In the third Ag site, Ag(3) is bonded in a 6-coordinate geometry to one S(1), one S(13), one S(14), one S(2), one S(7), and one S(8) atom. In the fourth Ag site, Ag(4) is bonded in a 6-coordinate geometry to one S(15), one S(16), one S(3), one S(4), one S(5), and one S(6) atom. There are sixteen inequivalent S sites. In the first S site, S(1) is bonded to one Nb(1), one Cr(2), one Cr(4), one Ag(2), and one Ag(3) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(5)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(2)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(3)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(5)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(8)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(7)NbCr2Ag2 trigonal bipyramids. In the second S site, S(2) is bonded to one Cr(1), one Cr(3), one Cr(5), one Ag(2), and one Ag(3) atom to form distorted SCr3Ag2 trigonal bipyramids that share  a cornercorner with one S(6)Cr3Ag2 trigonal bipyramid, corners with two equivalent S(1)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(4)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(6)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(7)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(8)NbCr2Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the third S site, S(3) is bonded to one Nb(1), one Cr(2), one Cr(6), one Ag(1), and one Ag(4) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(7)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(1)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(4)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(6)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(7)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(5)NbCr2Ag2 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Nb(2), one Cr(1), one Cr(3), one Ag(1), and one Ag(4) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(8)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(2)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(3)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(5)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(8)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(6)Cr3Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the fifth S site, S(5) is bonded to one Nb(1), one Cr(2), one Cr(4), one Ag(1), and one Ag(4) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(1)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(6)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(7)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(1)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(4)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(3)NbCr2Ag2 trigonal bipyramids. In the sixth S site, S(6) is bonded to one Cr(1), one Cr(3), one Cr(5), one Ag(1), and one Ag(4) atom to form distorted SCr3Ag2 trigonal bipyramids that share  a cornercorner with one S(2)Cr3Ag2 trigonal bipyramid, corners with two equivalent S(5)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(8)NbCr2Ag2 trigonal bipyramids,  a cornercorner with one S(16)NbCr2Ag trigonal pyramid,  an edgeedge with one S(2)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(3)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(4)NbCr2Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the seventh S site, S(7) is bonded to one Nb(1), one Cr(2), one Cr(6), one Ag(2), and one Ag(3) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(3)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(5)NbCr2Ag2 trigonal bipyramids, corners with two equivalent S(8)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(2)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(3)NbCr2Ag2 trigonal bipyramid, and edges with two equivalent S(1)NbCr2Ag2 trigonal bipyramids. In the eighth S site, S(8) is bonded to one Nb(2), one Cr(1), one Cr(3), one Ag(2), and one Ag(3) atom to form distorted SNbCr2Ag2 trigonal bipyramids that share  a cornercorner with one S(4)NbCr2Ag2 trigonal bipyramid, corners with two equivalent S(6)Cr3Ag2 trigonal bipyramids, corners with two equivalent S(7)NbCr2Ag2 trigonal bipyramids,  an edgeedge with one S(1)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(4)NbCr2Ag2 trigonal bipyramid, edges with two equivalent S(2)Cr3Ag2 trigonal bipyramids, and  an edgeedge with one S(16)NbCr2Ag trigonal pyramid. In the ninth S site, S(9) is bonded in a rectangular see-saw-like geometry to one Nb(1), one Cr(4), one Cr(6), and one Ag(1) atom. In the tenth S site, S(10) is bonded in a rectangular see-saw-like geometry to one Nb(2), one Cr(1), one Cr(5), and one Ag(1) atom. In the eleventh S site, S(11) is bonded in a rectangular see-saw-like geometry to one Cr(2), one Cr(4), one Cr(6), and one Ag(2) atom. In the twelfth S site, S(12) is bonded in a rectangular see-saw-like geometry to one Nb(2), one Cr(3), one Cr(5), and one Ag(2) atom. In the thirteenth S site, S(13) is bonded in a rectangular see-saw-like geometry to one Nb(1), one Cr(4), one Cr(6), and one Ag(3) atom. In the fourteenth S site, S(14) is bonded in a rectangular see-saw-like geometry to one Nb(2), one Cr(1), one Cr(5), and one Ag(3) atom. In the fifteenth S site, S(15) is bonded in a rectangular see-saw-like geometry to one Cr(2), one Cr(4), one Cr(6), and one Ag(4) atom. In the sixteenth S site, S(16) is bonded to one Nb(2), one Cr(3), one Cr(5), and one Ag(4) atom to form SNbCr2Ag trigonal pyramids that share  a cornercorner with one S(6)Cr3Ag2 trigonal bipyramid,  a cornercorner with one S(3)NbCr2Ag2 trigonal bipyramid,  a cornercorner with one S(4)NbCr2Ag2 trigonal bipyramid,  a cornercorner with one S(5)NbCr2Ag2 trigonal bipyramid,  an edgeedge with one S(2)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(6)Cr3Ag2 trigonal bipyramid,  an edgeedge with one S(4)NbCr2Ag2 trigonal bipyramid, and  an edgeedge with one S(8)NbCr2Ag2 trigonal bipyramid. is represented by the CIF file [CIF]
data_NbCr3(AgS4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.941
_cell_length_b   13.288
_cell_length_c   6.000
_cell_angle_alpha   90.230
_cell_angle_beta   90.261
_cell_angle_gamma   90.508
_symmetry_Int_Tables_number   1
_cell_volume   553.292
_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
  Nb  Nb0  1  0.019  0.252  0.993  1.0
  Nb  Nb1  1  0.230  0.751  0.499  1.0
  Cr  Cr2  1  0.003  0.751  0.001  1.0
  Cr  Cr3  1  0.493  0.251  0.005  1.0
  Cr  Cr4  1  0.499  0.749  0.000  1.0
  Cr  Cr5  1  0.248  0.249  0.504  1.0
  Cr  Cr6  1  0.758  0.750  0.502  1.0
  Cr  Cr7  1  0.750  0.249  0.506  1.0
  Ag  Ag8  1  0.981  0.998  0.343  1.0
  Ag  Ag9  1  0.517  0.502  0.633  1.0
  Ag  Ag10  1  0.988  0.497  0.023  1.0
  Ag  Ag11  1  0.511  0.001  0.954  1.0
  S  S12  1  0.258  0.360  0.825  1.0
  S  S13  1  0.747  0.651  0.834  1.0
  S  S14  1  0.741  0.149  0.168  1.0
  S  S15  1  0.249  0.857  0.160  1.0
  S  S16  1  0.249  0.142  0.179  1.0
  S  S17  1  0.757  0.849  0.169  1.0
  S  S18  1  0.738  0.353  0.837  1.0
  S  S19  1  0.248  0.643  0.840  1.0
  S  S20  1  0.001  0.143  0.659  1.0
  S  S21  1  0.998  0.858  0.677  1.0
  S  S22  1  0.500  0.346  0.344  1.0
  S  S23  1  0.509  0.651  0.338  1.0
  S  S24  1  0.002  0.353  0.341  1.0
  S  S25  1  0.995  0.642  0.325  1.0
  S  S26  1  0.498  0.153  0.673  1.0
  S  S27  1  0.510  0.849  0.668  1.0
[/CIF]
.