AgCd2InS4 is Stannite-like structured and crystallizes in the monoclinic Cm space group. Ag(1) is bonded to one S(1), one S(4), and two equivalent S(3) atoms to form AgS4 tetrahedra that share corners with two equivalent Ag(1)S4 tetrahedra, corners with three equivalent Cd(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with four equivalent In(1)S4 tetrahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one S(2), one S(4), and two equivalent S(1) atoms to form CdS4 tetrahedra that share corners with two equivalent Cd(1)S4 tetrahedra, corners with three equivalent Ag(1)S4 tetrahedra, corners with three equivalent In(1)S4 tetrahedra, and corners with four equivalent Cd(2)S4 tetrahedra. In the second Cd site, Cd(2) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form CdS4 tetrahedra that share corners with two equivalent Cd(2)S4 tetrahedra, corners with three equivalent Ag(1)S4 tetrahedra, corners with three equivalent In(1)S4 tetrahedra, and corners with four equivalent Cd(1)S4 tetrahedra. In(1) is bonded to one S(2), one S(3), and two equivalent S(4) atoms to form InS4 tetrahedra that share corners with two equivalent In(1)S4 tetrahedra, corners with three equivalent Cd(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with four equivalent Ag(1)S4 tetrahedra. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Cd(2), and two equivalent Cd(1) atoms to form SCd3Ag tetrahedra that share corners with two equivalent S(1)Cd3Ag tetrahedra, corners with three equivalent S(4)CdIn2Ag tetrahedra, corners with three equivalent S(3)CdInAg2 tetrahedra, and corners with four equivalent S(2)Cd3In tetrahedra. In the second S site, S(2) is bonded to one Cd(1), two equivalent Cd(2), and one In(1) atom to form SCd3In tetrahedra that share corners with two equivalent S(2)Cd3In tetrahedra, corners with three equivalent S(4)CdIn2Ag tetrahedra, corners with three equivalent S(3)CdInAg2 tetrahedra, and corners with four equivalent S(1)Cd3Ag tetrahedra. In the third S site, S(3) is bonded to two equivalent Ag(1), one Cd(2), and one In(1) atom to form SCdInAg2 tetrahedra that share corners with two equivalent S(3)CdInAg2 tetrahedra, corners with three equivalent S(1)Cd3Ag tetrahedra, corners with three equivalent S(2)Cd3In tetrahedra, and corners with four equivalent S(4)CdIn2Ag tetrahedra. In the fourth S site, S(4) is bonded to one Ag(1), one Cd(1), and two equivalent In(1) atoms to form SCdIn2Ag tetrahedra that share corners with two equivalent S(4)CdIn2Ag tetrahedra, corners with three equivalent S(1)Cd3Ag tetrahedra, corners with three equivalent S(2)Cd3In tetrahedra, and corners with four equivalent S(3)CdInAg2 tetrahedra.
AgCd2InS4 is Stannite-like structured and crystallizes in the monoclinic Cm space group. Ag(1) is bonded to one S(1), one S(4), and two equivalent S(3) atoms to form AgS4 tetrahedra that share corners with two equivalent Ag(1)S4 tetrahedra, corners with three equivalent Cd(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with four equivalent In(1)S4 tetrahedra. The Ag(1)-S(1) bond length is 2.56 Å. The Ag(1)-S(4) bond length is 2.59 Å. Both Ag(1)-S(3) bond lengths are 2.56 Å. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one S(2), one S(4), and two equivalent S(1) atoms to form CdS4 tetrahedra that share corners with two equivalent Cd(1)S4 tetrahedra, corners with three equivalent Ag(1)S4 tetrahedra, corners with three equivalent In(1)S4 tetrahedra, and corners with four equivalent Cd(2)S4 tetrahedra. The Cd(1)-S(2) bond length is 2.63 Å. The Cd(1)-S(4) bond length is 2.65 Å. Both Cd(1)-S(1) bond lengths are 2.51 Å. In the second Cd site, Cd(2) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form CdS4 tetrahedra that share corners with two equivalent Cd(2)S4 tetrahedra, corners with three equivalent Ag(1)S4 tetrahedra, corners with three equivalent In(1)S4 tetrahedra, and corners with four equivalent Cd(1)S4 tetrahedra. The Cd(2)-S(1) bond length is 2.52 Å. The Cd(2)-S(3) bond length is 2.54 Å. Both Cd(2)-S(2) bond lengths are 2.62 Å. In(1) is bonded to one S(2), one S(3), and two equivalent S(4) atoms to form InS4 tetrahedra that share corners with two equivalent In(1)S4 tetrahedra, corners with three equivalent Cd(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with four equivalent Ag(1)S4 tetrahedra. The In(1)-S(2) bond length is 2.54 Å. The In(1)-S(3) bond length is 2.46 Å. Both In(1)-S(4) bond lengths are 2.56 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Cd(2), and two equivalent Cd(1) atoms to form SCd3Ag tetrahedra that share corners with two equivalent S(1)Cd3Ag tetrahedra, corners with three equivalent S(4)CdIn2Ag tetrahedra, corners with three equivalent S(3)CdInAg2 tetrahedra, and corners with four equivalent S(2)Cd3In tetrahedra. In the second S site, S(2) is bonded to one Cd(1), two equivalent Cd(2), and one In(1) atom to form SCd3In tetrahedra that share corners with two equivalent S(2)Cd3In tetrahedra, corners with three equivalent S(4)CdIn2Ag tetrahedra, corners with three equivalent S(3)CdInAg2 tetrahedra, and corners with four equivalent S(1)Cd3Ag tetrahedra. In the third S site, S(3) is bonded to two equivalent Ag(1), one Cd(2), and one In(1) atom to form SCdInAg2 tetrahedra that share corners with two equivalent S(3)CdInAg2 tetrahedra, corners with three equivalent S(1)Cd3Ag tetrahedra, corners with three equivalent S(2)Cd3In tetrahedra, and corners with four equivalent S(4)CdIn2Ag tetrahedra. In the fourth S site, S(4) is bonded to one Ag(1), one Cd(1), and two equivalent In(1) atoms to form SCdIn2Ag tetrahedra that share corners with two equivalent S(4)CdIn2Ag tetrahedra, corners with three equivalent S(1)Cd3Ag tetrahedra, corners with three equivalent S(2)Cd3In tetrahedra, and corners with four equivalent S(3)CdInAg2 tetrahedra.