“…For the latter, aluminum chlorofluoride, (ACF, AlCl x F 3− x , x ≈0.05–0.3), which is an amorphous, nanoscopic solid Lewis acid, proofed to be suitable in heterogeneous catalytic C−F bond activation reactions [7] . Even though ACF itself shows strong catalytic ability, [7a–c,8] its catalytic performance becomes unique in the presence of main group compounds [7d–g,9] . Thus, ACF catalyzed the C−F bond activation of fluorinated methanes in the presence of HSiEt 3 , towards both Friedel‐Crafts and hydrodefluorination products depending on the solvent used [7f] .…”