PbS crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a rectangular see-saw-like geometry to one S(1) and three equivalent S(2) atoms. In the second Pb site, Pb(2) is bonded in a rectangular see-saw-like geometry to four equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Pb(1) and four equivalent Pb(2) atoms to form a mixture of corner and edge-sharing SPb5 trigonal bipyramids. In the second S site, S(2) is bonded in a distorted T-shaped geometry to three equivalent Pb(1) atoms.
PbS crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a rectangular see-saw-like geometry to one S(1) and three equivalent S(2) atoms. The Pb(1)-S(1) bond length is 3.08 Å. There are two shorter (2.73 Å) and one longer (2.93 Å) Pb(1)-S(2) bond length. In the second Pb site, Pb(2) is bonded in a rectangular see-saw-like geometry to four equivalent S(1) atoms. There are a spread of Pb(2)-S(1) bond distances ranging from 2.76-3.06 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Pb(1) and four equivalent Pb(2) atoms to form a mixture of corner and edge-sharing SPb5 trigonal bipyramids. In the second S site, S(2) is bonded in a distorted T-shaped geometry to three equivalent Pb(1) atoms.