Bis[1,3-bis(pentafluorophenyl)triazenido]tricarbonylosmium(II)

Abstract

The title compound, [Os(C12F10N3)2(CO)3], has been synthesized by the reaction of C6F5N=NNHC6F5 with H2(Os)3(CO)10. The OsC3N3 coordination is octa­hedral around the Os center. Two bonding modes, chelating and monodentate, are observed for the triazenyl groups.

Properties and Promise of Catenated Nitrogen Systems As High-Energy-Density Materials

“…While parent triazene is not stable in pure form, organic variants are well-known, and common, in synthetic and medicinal chemistry, and examples are extensive. Consistent with theoretical calculations on the parent triazene, all structurally characterized examples are trans. − Such organic triazenes have extensive utility in synthesis, − and due to their ability to alkylate DNA, have also shown potential activity as anticancer drugs. , Metal complexes of triazenes are the most common isolated molecules, and monodendate examples are usually coordinated to late transition metals, − though other complexes exist, such as those with titanium, , main-group metals, and mid-transition metals. , Triazenes are commonly found to bridge pairs of metal ions at short distances to template M–M bonding interactions. − …”

“…329,330 Metal complexes of triazenes are the most common isolated molecules, and monodendate examples are usually coordinated to late transition metals, 331−347 though other complexes exist, such as those with titanium, 348,349 main-group metals, 350 and midtransition metals. 351,352 Triazenes are commonly found to bridge pairs of metal ions at short distances to template M−M bonding interactions. 353−362 Energetic materials of triazenes are not widely reported, with the exception of the class of tetrazoles (section 2.3.4) linked by the triazene bridging unit.…”