MnHg2S3 is Enargite-like structured and crystallizes in the trigonal P3m1 space group. Mn(1) is bonded to one S(3) and three equivalent S(2) atoms to form MnS4 tetrahedra that share corners with three equivalent Hg(1)S4 tetrahedra, corners with three equivalent Hg(2)S4 tetrahedra, and corners with six equivalent Mn(1)S4 tetrahedra. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded to one S(1) and three equivalent S(3) atoms to form HgS4 tetrahedra that share corners with three equivalent Mn(1)S4 tetrahedra, corners with three equivalent Hg(2)S4 tetrahedra, and corners with six equivalent Hg(1)S4 tetrahedra. In the second Hg site, Hg(2) is bonded to one S(2) and three equivalent S(1) atoms to form HgS4 tetrahedra that share corners with three equivalent Mn(1)S4 tetrahedra, corners with three equivalent Hg(1)S4 tetrahedra, and corners with six equivalent Hg(2)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Hg(1) and three equivalent Hg(2) atoms to form SHg4 tetrahedra that share corners with three equivalent S(2)Mn3Hg tetrahedra, corners with three equivalent S(3)MnHg3 tetrahedra, and corners with six equivalent S(1)Hg4 tetrahedra. In the second S site, S(2) is bonded to three equivalent Mn(1) and one Hg(2) atom to form SMn3Hg tetrahedra that share corners with three equivalent S(1)Hg4 tetrahedra, corners with three equivalent S(3)MnHg3 tetrahedra, and corners with six equivalent S(2)Mn3Hg tetrahedra. In the third S site, S(3) is bonded to one Mn(1) and three equivalent Hg(1) atoms to form SMnHg3 tetrahedra that share corners with three equivalent S(1)Hg4 tetrahedra, corners with three equivalent S(2)Mn3Hg tetrahedra, and corners with six equivalent S(3)MnHg3 tetrahedra.
MnHg2S3 is Enargite-like structured and crystallizes in the trigonal P3m1 space group. Mn(1) is bonded to one S(3) and three equivalent S(2) atoms to form MnS4 tetrahedra that share corners with three equivalent Hg(1)S4 tetrahedra, corners with three equivalent Hg(2)S4 tetrahedra, and corners with six equivalent Mn(1)S4 tetrahedra. The Mn(1)-S(3) bond length is 2.40 Å. All Mn(1)-S(2) bond lengths are 2.49 Å. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded to one S(1) and three equivalent S(3) atoms to form HgS4 tetrahedra that share corners with three equivalent Mn(1)S4 tetrahedra, corners with three equivalent Hg(2)S4 tetrahedra, and corners with six equivalent Hg(1)S4 tetrahedra. The Hg(1)-S(1) bond length is 2.57 Å. All Hg(1)-S(3) bond lengths are 2.59 Å. In the second Hg site, Hg(2) is bonded to one S(2) and three equivalent S(1) atoms to form HgS4 tetrahedra that share corners with three equivalent Mn(1)S4 tetrahedra, corners with three equivalent Hg(1)S4 tetrahedra, and corners with six equivalent Hg(2)S4 tetrahedra. The Hg(2)-S(2) bond length is 2.60 Å. All Hg(2)-S(1) bond lengths are 2.58 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Hg(1) and three equivalent Hg(2) atoms to form SHg4 tetrahedra that share corners with three equivalent S(2)Mn3Hg tetrahedra, corners with three equivalent S(3)MnHg3 tetrahedra, and corners with six equivalent S(1)Hg4 tetrahedra. In the second S site, S(2) is bonded to three equivalent Mn(1) and one Hg(2) atom to form SMn3Hg tetrahedra that share corners with three equivalent S(1)Hg4 tetrahedra, corners with three equivalent S(3)MnHg3 tetrahedra, and corners with six equivalent S(2)Mn3Hg tetrahedra. In the third S site, S(3) is bonded to one Mn(1) and three equivalent Hg(1) atoms to form SMnHg3 tetrahedra that share corners with three equivalent S(1)Hg4 tetrahedra, corners with three equivalent S(2)Mn3Hg tetrahedra, and corners with six equivalent S(3)MnHg3 tetrahedra.