YbS2 crystallizes in the tetragonal P4/nmm space group. Yb(1) is bonded in a 9-coordinate geometry to four equivalent S(1) and five equivalent S(2) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 8-coordinate geometry to four equivalent Yb(1) and four equivalent S(1) atoms. In the second S site, S(2) is bonded to five equivalent Yb(1) atoms to form a mixture of distorted corner and edge-sharing SYb5 trigonal bipyramids.
YbS2 crystallizes in the tetragonal P4/nmm space group. Yb(1) is bonded in a 9-coordinate geometry to four equivalent S(1) and five equivalent S(2) atoms. All Yb(1)-S(1) bond lengths are 3.05 Å. There are four shorter (2.76 Å) and one longer (2.89 Å) Yb(1)-S(2) bond length. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 8-coordinate geometry to four equivalent Yb(1) and four equivalent S(1) atoms. All S(1)-S(1) bond lengths are 2.66 Å. In the second S site, S(2) is bonded to five equivalent Yb(1) atoms to form a mixture of distorted corner and edge-sharing SYb5 trigonal bipyramids.