Ag3PS4 is Enargite structured and crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent P(1)S4 tetrahedra. In the second Ag site, Ag(2) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent P(1)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. P(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form PS4 tetrahedra that share corners with four equivalent Ag(2)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Ag(2), two equivalent Ag(1), and one P(1) atom to form corner-sharing SAg3P tetrahedra. In the second S site, S(2) is bonded to one Ag(2), two equivalent Ag(1), and one P(1) atom to form corner-sharing SAg3P tetrahedra. In the third S site, S(3) is bonded to one Ag(2), two equivalent Ag(1), and one P(1) atom to form distorted corner-sharing SAg3P trigonal pyramids.
Ag3PS4 is Enargite structured and crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent P(1)S4 tetrahedra. The Ag(1)-S(2) bond length is 2.52 Å. The Ag(1)-S(3) bond length is 2.59 Å. There is one shorter (2.50 Å) and one longer (2.58 Å) Ag(1)-S(1) bond length. In the second Ag site, Ag(2) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent P(1)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. The Ag(2)-S(2) bond length is 2.58 Å. The Ag(2)-S(3) bond length is 2.55 Å. Both Ag(2)-S(1) bond lengths are 2.59 Å. P(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form PS4 tetrahedra that share corners with four equivalent Ag(2)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. The P(1)-S(2) bond length is 2.06 Å. The P(1)-S(3) bond length is 2.04 Å. Both P(1)-S(1) bond lengths are 2.07 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Ag(2), two equivalent Ag(1), and one P(1) atom to form corner-sharing SAg3P tetrahedra. In the second S site, S(2) is bonded to one Ag(2), two equivalent Ag(1), and one P(1) atom to form corner-sharing SAg3P tetrahedra. In the third S site, S(3) is bonded to one Ag(2), two equivalent Ag(1), and one P(1) atom to form distorted corner-sharing SAg3P trigonal pyramids.