ThGeSe crystallizes in the tetragonal I4/mmm space group. Th(1) is bonded in a 9-coordinate geometry to four equivalent Ge(1) and five equivalent Se(1) atoms. Ge(1) is bonded in a distorted body-centered cubic geometry to four equivalent Th(1) and four equivalent Ge(1) atoms. Se(1) is bonded to five equivalent Th(1) atoms to form a mixture of distorted corner and edge-sharing SeTh5 trigonal bipyramids.
ThGeSe crystallizes in the tetragonal I4/mmm space group. Th(1) is bonded in a 9-coordinate geometry to four equivalent Ge(1) and five equivalent Se(1) atoms. All Th(1)-Ge(1) bond lengths are 3.09 Å. There are four shorter (3.04 Å) and one longer (3.16 Å) Th(1)-Se(1) bond length. Ge(1) is bonded in a distorted body-centered cubic geometry to four equivalent Th(1) and four equivalent Ge(1) atoms. All Ge(1)-Ge(1) bond lengths are 2.87 Å. Se(1) is bonded to five equivalent Th(1) atoms to form a mixture of distorted corner and edge-sharing SeTh5 trigonal bipyramids.