Nitrogen-rich compounds of the actinoids: Dioxouranium(VI) 5,5'-Azobis[tetrazolide] Pentahydrate and Its unusually small uranyl angle
- Author(s)
- Georg Steinhauser, Gerald Giester, Christoph Wagner, Peter Weinberger, Bernahrd Zachhuber, Georg Ramer, Mario Villa, Bernhard Lendl
- Abstract
Uranyl(VI) 5,5'-azobis[tetrazolide] pentahydrate was synthesized and characterized using X-ray crystallog., elemental anal., UV/vis, MIR, FIR, and Raman spectroscopy. It is the second-most nitrogen rich compd. of uranium (26.72 wt % N) and only the second structurally characterized uranium complex with a tetrazole ligand described in the literature. The compd.'s structure is characterized by an exceptionally small uranyl angle of 172.4(1)°, which provides information on the coordination properties of tetrazole ligands as they affect the donor's environment by strong steric and perhaps electrostatic repulsion. The compd. showed luminescence under excitation with a near UV laser. The mean lifetime of its excited state was shorter than in the case of UO2(NO3)2·6H2O, indicating quenching by the ligand. Despite its high nitrogen content (and thus potentially explosive character), the title compd. proved to be stable even under neutron radiation causing induced fission processes.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Technische Universität Wien
- Journal
- Inorganic Chemistry
- Volume
- 51
- Pages
- 6739-6745
- No. of pages
- 7
- ISSN
- 0020-1669
- Publication date
- 2012
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105113 Crystallography, 104015 Organic chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/5376fd73-9eaf-4e7b-ab4e-4d46142c4817