Preparation Of The Binary Technetium Bromides: Tcbr_3 And Tcbr_4

摘要

Because technetium and rhenium are members of the same group in the periodic table, the occurrence of analogous halide, oxide, coordination, and organometallic compounds is expected. However, the development of technetium chemistry has lagged behind that of its heavier congener, primarily because the inherent radioactivity of all Tc isotopes has limited the number of laboratories that can study the chemistry of this fascinating element. Most current studies focus on the applications of the ~(99m)Tc isotope in diagnostic nuclear medicine resulting in some curious gaps in fundamental technetium chemistry. For example, only recently has the structure of TcO_2 been fully determined, and in the case of the halides, 13 binary phases have been reported for rhenium, but only 3 are known and well-characterized for technetium (TcF_6, TcF_5, and TcCl_4).