NaI-Mediated Defluorination: A Mild Route to Reduced Ruddlesden–Popper Oxyfluorides Demonstrated on La 2 CoO 3 F 3 as Model System - Jonas Jacobs; Tommi Aalto; Yorik Puffaldt; Clemens Ritter; Oliver Clemens (Journal of the American Chemical Society, 2026)