Bonding features in Appel's salt from the orbital‐free quantum crystallographic perspective. - Bartashevich, Ekaterina; Stash, Adam; Yushina, Irina; Minyaev, Mikhail; Bol'shakov, Oleg; Rakitin, Oleg; Tsirelson, Vladimir (Acta Crystallographica Section B: Structural Science, Crystal Engineering & Materials, 2021)