Formation of Stoichiometric CsF${}_n$ Compounds

Qiang Zhu, Artem R. Oganov, Qingfeng Zeng

Alkali halides $MX$, have been viewed as typical ionic compounds, characterized by 1:1 ratio necessary for charge balance between M${}^{+}$ and X${}^{-}$. It was proposed that group I elem…