Y2Cl3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a pentagonal planar geometry to one Cl(1), one Cl(2), and three equivalent Cl(3) atoms. In the second Y site, Y(2) is bonded in a 5-coordinate geometry to two equivalent Cl(1) and three equivalent Cl(2) atoms. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted T-shaped geometry to one Y(1) and two equivalent Y(2) atoms. In the second Cl site, Cl(2) is bonded in a distorted rectangular see-saw-like geometry to one Y(1) and three equivalent Y(2) atoms. In the third Cl site, Cl(3) is bonded in a trigonal non-coplanar geometry to three equivalent Y(1) atoms.
Y2Cl3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a pentagonal planar geometry to one Cl(1), one Cl(2), and three equivalent Cl(3) atoms. The Y(1)-Cl(1) bond length is 2.70 Å. The Y(1)-Cl(2) bond length is 2.73 Å. There is one shorter (2.78 Å) and two longer (2.82 Å) Y(1)-Cl(3) bond lengths. In the second Y site, Y(2) is bonded in a 5-coordinate geometry to two equivalent Cl(1) and three equivalent Cl(2) atoms. Both Y(2)-Cl(1) bond lengths are 2.75 Å. There are two shorter (2.78 Å) and one longer (3.17 Å) Y(2)-Cl(2) bond length. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted T-shaped geometry to one Y(1) and two equivalent Y(2) atoms. In the second Cl site, Cl(2) is bonded in a distorted rectangular see-saw-like geometry to one Y(1) and three equivalent Y(2) atoms. In the third Cl site, Cl(3) is bonded in a trigonal non-coplanar geometry to three equivalent Y(1) atoms.