Weinhold, TillmannSeewald, FelixHerrmann, Cornelius2026-10-272026-10-2720252026-10-27https://opara.zih.tu-dresden.de/handle/123456789/3017https://doi.org/10.25532/OPARA-1607The dataset contains NMR/NQR and Mössbauer data that is presented in Confirmation of complex non-collinear Fe(II) spin ordering in the iron oxychalcogenide La2O2Fe2OSe2 by broad range 139La-NQR.Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/3::32::307::307-01