TmOCl is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Tm(1) is bonded in a 4-coordinate geometry to four equivalent O(1) and five equivalent Cl(1) atoms. O(1) is bonded to four equivalent Tm(1) atoms to form a mixture of edge and corner-sharing OTm4 tetrahedra. Cl(1) is bonded in a 5-coordinate geometry to five equivalent Tm(1) atoms.
TmOCl is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Tm(1) is bonded in a 4-coordinate geometry to four equivalent O(1) and five equivalent Cl(1) atoms. All Tm(1)-O(1) bond lengths are 2.21 Å. There are four shorter (3.05 Å) and one longer (3.12 Å) Tm(1)-Cl(1) bond length. O(1) is bonded to four equivalent Tm(1) atoms to form a mixture of edge and corner-sharing OTm4 tetrahedra. Cl(1) is bonded in a 5-coordinate geometry to five equivalent Tm(1) atoms.