TmLaB12 is Calcium hexaboride-derived structured and crystallizes in the cubic Fm-3m space group. Tm(1) is bonded in a 24-coordinate geometry to twenty-four equivalent B(1) atoms. La(1) is bonded in a 24-coordinate geometry to twenty-four equivalent B(1) atoms. B(1) is bonded in a 5-coordinate geometry to two equivalent Tm(1), two equivalent La(1), and five equivalent B(1) atoms.
TmLaB12 is Calcium hexaboride-derived structured and crystallizes in the cubic Fm-3m space group. Tm(1) is bonded in a 24-coordinate geometry to twenty-four equivalent B(1) atoms. All Tm(1)-B(1) bond lengths are 3.03 Å. La(1) is bonded in a 24-coordinate geometry to twenty-four equivalent B(1) atoms. All La(1)-B(1) bond lengths are 3.03 Å. B(1) is bonded in a 5-coordinate geometry to two equivalent Tm(1), two equivalent La(1), and five equivalent B(1) atoms. There is one shorter (1.64 Å) and four longer (1.75 Å) B(1)-B(1) bond lengths.