Tm2CuO4 crystallizes in the monoclinic P2_1/c space group. Tm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to four equivalent Tm(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Tm(1) and one Cu(1) atom.
Tm2CuO4 crystallizes in the monoclinic P2_1/c space group. Tm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. There are a spread of Tm(1)-O(1) bond distances ranging from 2.35-2.49 Å. There are a spread of Tm(1)-O(2) bond distances ranging from 2.26-2.56 Å. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(1)-O(1) bond lengths are 1.94 Å. Both Cu(1)-O(2) bond lengths are 2.03 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to four equivalent Tm(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Tm(1) and one Cu(1) atom.