%0 Journal Article
%A Zegke, Markus
%A Grödler, Dennis
%A Roca Jungfer, Maximilian
%A Haseloer, Alexander
%A Kreuter, Meike
%A Neudörfl, Jörg M.
%A Sittel, Thomas
%A James, Christopher M.
%A Rothe, Jörg
%A Altmaier, Marcus
%A Klein, Axel
%A Breugst, Martin
%A Abram, Ulrich
%A Strub, Erik
%A Wickleder, Mathias S.
%T Ammonium Pertechnetate in Mixtures of Trifluoromethanesulfonic Acid and Trifluoromethanesulfonic Anhydride
%J Angewandte Chemie / International edition
%V 61
%N 3
%@ 0570-0833
%C Weinheim
%I Wiley-VCH
%M FZJ-2022-01780
%P e202113777
%D 2022
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:34752692
%U <Go to ISI:>//WOS:000725948100001
%R 10.1002/anie.202113777
%U https://juser.fz-juelich.de/record/906962