Journal Article

FZJ-2022-01780

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ammonium Pertechnetate in Mixtures of Trifluoromethanesulfonic Acid and Trifluoromethanesulfonic Anhydride

Zegke, M. (Corresponding author)FZJ* ; Grödler, D. ; Roca Jungfer, M. ; Haseloer, A. ; Kreuter, M. ; Neudörfl, J. M. ; Sittel, T. ; James, C. M. ; Rothe, J. ; Altmaier, M. ; Klein, A. ; Breugst, M. ; Abram, U. ; Strub, E.FZJ* ; Wickleder, M. S.

2022
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/30958  doi:10.1002/anie.202113777

Abstract: Ammonium pertechnetate reacts in mixtures of trifluoromethanesulfonic anhydride and trifluoromethanesulfonic acid under final formation of ammonium pentakis(trifluoromethanesulfonato) oxidotechnetate(V), (NH4)2[TcO(OTf)5]. The reaction proceeds only at exact concentrations and under the exclusion of air and moisture via pertechnetyl trifluoromethanesulfonate, [TcO3(OTf)], and intermediate Tc(VI) species. 99Tc nuclear magnetic resonance (NMR) has been used to study the Tc(VII) compound and electron paramagnetic resonance (EPR), 99Tc NMR and X-ray absorption near-edge structure (XANES) experiments indicate the presence of the reduced technetium species. On moist air, (NH4)2[TcO(OTf)5] slowly hydrolyses under formation of the tetramericoxidotechnetate(V) (NH4)4[{TcO(TcO4)4}4] 10 H2O. Single crystal Xray crystallography was used to determine the solid state structures. Additionally, UV-vis and IR spectra and quantum chemical calculations confirm the identity of the species.

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Contributing Institute(s):

1. Nuklearchemie (INM-5)

Research Program(s):

1. 5253 - Neuroimaging (POF4-525) (POF4-525)

Appears in the scientific report 2022

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Database coverage:
; ; ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; Index Chemicus ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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