YbSeF crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a distorted hexagonal planar geometry to two equivalent Se(1) and six equivalent F(1,2) atoms. In the second Yb site, Yb(2) is bonded to six equivalent Se(1) atoms to form edge-sharing YbSe6 octahedra. Se(1) is bonded in a rectangular see-saw-like geometry to one Yb(1) and three equivalent Yb(2) atoms. F(1,2) is bonded in a trigonal planar geometry to three equivalent Yb(1) atoms.
YbSeF crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a distorted hexagonal planar geometry to two equivalent Se(1) and six equivalent F(1,2) atoms. Both Yb(1)-Se(1) bond lengths are 3.29 Å. All Yb(1)-F(1,2) bond lengths are 2.32 Å. In the second Yb site, Yb(2) is bonded to six equivalent Se(1) atoms to form edge-sharing YbSe6 octahedra. All Yb(2)-Se(1) bond lengths are 2.86 Å. Se(1) is bonded in a rectangular see-saw-like geometry to one Yb(1) and three equivalent Yb(2) atoms. F(1,2) is bonded in a trigonal planar geometry to three equivalent Yb(1) atoms.