Ba2Ag3Cu(SnS4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(5), one S(6), two equivalent S(3), and two equivalent S(7) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(5), one S(6), two equivalent S(4), and two equivalent S(8) atoms. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted see-saw-like geometry to one S(2), one S(3), one S(5), and one S(7) atom. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one S(1), one S(4), one S(6), and one S(8) atom. In the third Ag site, Ag(3) is bonded in a distorted see-saw-like geometry to one S(1), one S(3), one S(6), and one S(7) atom. Cu(1) is bonded in a 4-coordinate geometry to one S(2), one S(4), one S(5), and one S(8) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a tetrahedral geometry to one S(1), one S(3), one S(6), and one S(8) atom. In the second Sn site, Sn(2) is bonded in a tetrahedral geometry to one S(2), one S(4), one S(5), and one S(7) atom. There are eight inequivalent S sites. In the first S site, S(1) is bonded to one Ba(1), one Ba(2), one Ag(2), one Ag(3), and one Sn(1) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share  a cornercorner with one S(6)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(4)Ba2CuAgSn trigonal bipyramid, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(7)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(3)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(4)Ba2CuAgSn trigonal bipyramid, and edges with two equivalent S(6)Ba2Ag2Sn trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ag(1), one Cu(1), and one Sn(2) atom. In the third S site, S(3) is bonded to two equivalent Ba(1), one Ag(1), one Ag(3), and one Sn(1) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share corners with two equivalent S(1)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(6)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids, corners with three equivalent S(5)Ba2CuAgSn trigonal bipyramids,  an edgeedge with one S(1)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(6)Ba2Ag2Sn trigonal bipyramid, and edges with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Ba(2), one Ag(2), one Cu(1), and one Sn(2) atom to form distorted SBa2CuAgSn trigonal bipyramids that share  a cornercorner with one S(1)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(7)Ba2Ag2Sn trigonal bipyramid, corners with two equivalent S(4)Ba2CuAgSn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(6)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(1)Ba2Ag2Sn trigonal bipyramid, and  an edgeedge with one S(5)Ba2CuAgSn trigonal bipyramid. In the fifth S site, S(5) is bonded to one Ba(1), one Ba(2), one Ag(1), one Cu(1), and one Sn(2) atom to form distorted SBa2CuAgSn trigonal bipyramids that share corners with two equivalent S(1)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(6)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(4)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(3)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(7)Ba2Ag2Sn trigonal bipyramid, and  an edgeedge with one S(4)Ba2CuAgSn trigonal bipyramid. In the sixth S site, S(6) is bonded to one Ba(1), one Ba(2), one Ag(2), one Ag(3), and one Sn(1) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share  a cornercorner with one S(1)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(7)Ba2Ag2Sn trigonal bipyramid, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(4)Ba2CuAgSn trigonal bipyramids,  an edgeedge with one S(3)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(7)Ba2Ag2Sn trigonal bipyramid, and edges with two equivalent S(1)Ba2Ag2Sn trigonal bipyramids. In the seventh S site, S(7) is bonded to two equivalent Ba(1), one Ag(1), one Ag(3), and one Sn(2) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share  a cornercorner with one S(6)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(4)Ba2CuAgSn trigonal bipyramid, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(1)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(6)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(5)Ba2CuAgSn trigonal bipyramid, and edges with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids. In the eighth S site, S(8) is bonded in a 5-coordinate geometry to two equivalent Ba(2), one Ag(2), one Cu(1), and one Sn(1) atom.
Ba2Ag3Cu(SnS4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(5), one S(6), two equivalent S(3), and two equivalent S(7) atoms. The Ba(1)-S(1) bond length is 3.34 Å. The Ba(1)-S(2) bond length is 3.41 Å. The Ba(1)-S(5) bond length is 3.32 Å. The Ba(1)-S(6) bond length is 3.40 Å. There is one shorter (3.32 Å) and one longer (3.41 Å) Ba(1)-S(3) bond length. There is one shorter (3.33 Å) and one longer (3.41 Å) Ba(1)-S(7) bond length. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(5), one S(6), two equivalent S(4), and two equivalent S(8) atoms. The Ba(2)-S(1) bond length is 3.43 Å. The Ba(2)-S(2) bond length is 3.32 Å. The Ba(2)-S(5) bond length is 3.38 Å. The Ba(2)-S(6) bond length is 3.32 Å. There is one shorter (3.32 Å) and one longer (3.37 Å) Ba(2)-S(4) bond length. There is one shorter (3.33 Å) and one longer (3.42 Å) Ba(2)-S(8) bond length. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted see-saw-like geometry to one S(2), one S(3), one S(5), and one S(7) atom. The Ag(1)-S(2) bond length is 3.03 Å. The Ag(1)-S(3) bond length is 2.49 Å. The Ag(1)-S(5) bond length is 2.50 Å. The Ag(1)-S(7) bond length is 2.85 Å. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one S(1), one S(4), one S(6), and one S(8) atom. The Ag(2)-S(1) bond length is 2.85 Å. The Ag(2)-S(4) bond length is 2.49 Å. The Ag(2)-S(6) bond length is 2.48 Å. The Ag(2)-S(8) bond length is 3.03 Å. In the third Ag site, Ag(3) is bonded in a distorted see-saw-like geometry to one S(1), one S(3), one S(6), and one S(7) atom. The Ag(3)-S(1) bond length is 2.47 Å. The Ag(3)-S(3) bond length is 2.87 Å. The Ag(3)-S(6) bond length is 2.85 Å. The Ag(3)-S(7) bond length is 2.47 Å. Cu(1) is bonded in a 4-coordinate geometry to one S(2), one S(4), one S(5), and one S(8) atom. The Cu(1)-S(2) bond length is 2.24 Å. The Cu(1)-S(4) bond length is 2.79 Å. The Cu(1)-S(5) bond length is 2.82 Å. The Cu(1)-S(8) bond length is 2.23 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a tetrahedral geometry to one S(1), one S(3), one S(6), and one S(8) atom. The Sn(1)-S(1) bond length is 2.43 Å. The Sn(1)-S(3) bond length is 2.44 Å. The Sn(1)-S(6) bond length is 2.43 Å. The Sn(1)-S(8) bond length is 2.45 Å. In the second Sn site, Sn(2) is bonded in a tetrahedral geometry to one S(2), one S(4), one S(5), and one S(7) atom. The Sn(2)-S(2) bond length is 2.45 Å. The Sn(2)-S(4) bond length is 2.42 Å. The Sn(2)-S(5) bond length is 2.43 Å. The Sn(2)-S(7) bond length is 2.44 Å. There are eight inequivalent S sites. In the first S site, S(1) is bonded to one Ba(1), one Ba(2), one Ag(2), one Ag(3), and one Sn(1) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share  a cornercorner with one S(6)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(4)Ba2CuAgSn trigonal bipyramid, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(7)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(3)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(4)Ba2CuAgSn trigonal bipyramid, and edges with two equivalent S(6)Ba2Ag2Sn trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ag(1), one Cu(1), and one Sn(2) atom. In the third S site, S(3) is bonded to two equivalent Ba(1), one Ag(1), one Ag(3), and one Sn(1) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share corners with two equivalent S(1)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(6)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids, corners with three equivalent S(5)Ba2CuAgSn trigonal bipyramids,  an edgeedge with one S(1)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(6)Ba2Ag2Sn trigonal bipyramid, and edges with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Ba(2), one Ag(2), one Cu(1), and one Sn(2) atom to form distorted SBa2CuAgSn trigonal bipyramids that share  a cornercorner with one S(1)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(7)Ba2Ag2Sn trigonal bipyramid, corners with two equivalent S(4)Ba2CuAgSn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(6)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(1)Ba2Ag2Sn trigonal bipyramid, and  an edgeedge with one S(5)Ba2CuAgSn trigonal bipyramid. In the fifth S site, S(5) is bonded to one Ba(1), one Ba(2), one Ag(1), one Cu(1), and one Sn(2) atom to form distorted SBa2CuAgSn trigonal bipyramids that share corners with two equivalent S(1)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(6)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(4)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(3)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(7)Ba2Ag2Sn trigonal bipyramid, and  an edgeedge with one S(4)Ba2CuAgSn trigonal bipyramid. In the sixth S site, S(6) is bonded to one Ba(1), one Ba(2), one Ag(2), one Ag(3), and one Sn(1) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share  a cornercorner with one S(1)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(7)Ba2Ag2Sn trigonal bipyramid, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(4)Ba2CuAgSn trigonal bipyramids,  an edgeedge with one S(3)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(7)Ba2Ag2Sn trigonal bipyramid, and edges with two equivalent S(1)Ba2Ag2Sn trigonal bipyramids. In the seventh S site, S(7) is bonded to two equivalent Ba(1), one Ag(1), one Ag(3), and one Sn(2) atom to form distorted SBa2Ag2Sn trigonal bipyramids that share  a cornercorner with one S(6)Ba2Ag2Sn trigonal bipyramid,  a cornercorner with one S(4)Ba2CuAgSn trigonal bipyramid, corners with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(7)Ba2Ag2Sn trigonal bipyramids, corners with two equivalent S(5)Ba2CuAgSn trigonal bipyramids, corners with three equivalent S(1)Ba2Ag2Sn trigonal bipyramids,  an edgeedge with one S(6)Ba2Ag2Sn trigonal bipyramid,  an edgeedge with one S(5)Ba2CuAgSn trigonal bipyramid, and edges with two equivalent S(3)Ba2Ag2Sn trigonal bipyramids. In the eighth S site, S(8) is bonded in a 5-coordinate geometry to two equivalent Ba(2), one Ag(2), one Cu(1), and one Sn(1) atom.