Transition metal binary halides exhibit catalytic, photochemical and redox properties that are of interest for industrial and medical applications. One transition metal whose halide chemistry is relatively unexplored is technetium, the lowest atomic number radioelement. Currently, nine technetium binary halides phases are known (TcF6, TcF5, TcBr4, TcBr3, TcCl4, a/�-TcCl3, a/�-TcCl2). Technetium dichloride is the most recent phase to be discovered; it can be prepared by reaction of Tc metal with Cl2 in a sealed tube, or by thermal decomposition of TcCl4 under vacuum. Technetium dibromide is still unknown and the methods used to prepare TcCl2 have heretofore not been tested on the bromide system. During decomposition of TcBr4, TcBr3 and ultimately the Tc6Br12 cluster are produced. The latter compound has been characterized by single crystal XRD and theoretical methods. In this talk, we will describe the molecular and electronic structure of the Tc6Br12 cluster.

Preparation and characterization of the Tc<sub>6</sub>Br<sub>12</sub> cluster

245th National Meeting (2013)

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Preparation and characterization of the Tc6Br12 cluster

Preparation and characterization of the Tc₆Br₁₂ cluster