Tc(OI3)2 crystallizes in the tetragonal P4/mnc space group. Tc(1) is bonded in an octahedral geometry to two equivalent I(1) and four equivalent I(2) atoms. O(1) is bonded in a 4-coordinate geometry to four equivalent I(2) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded in a single-bond geometry to one Tc(1) atom. In the second I site, I(2) is bonded in a trigonal non-coplanar geometry to one Tc(1) and two equivalent O(1) atoms.
Tc(OI3)2 crystallizes in the tetragonal P4/mnc space group. Tc(1) is bonded in an octahedral geometry to two equivalent I(1) and four equivalent I(2) atoms. Both Tc(1)-I(1) bond lengths are 2.67 Å. All Tc(1)-I(2) bond lengths are 2.68 Å. O(1) is bonded in a 4-coordinate geometry to four equivalent I(2) atoms. All O(1)-I(2) bond lengths are 2.72 Å. There are two inequivalent I sites. In the first I site, I(1) is bonded in a single-bond geometry to one Tc(1) atom. In the second I site, I(2) is bonded in a trigonal non-coplanar geometry to one Tc(1) and two equivalent O(1) atoms.