Functional π\pi-donors with no symmetry and Mott physics

Crystal engineering principles serve as a guide for the design of quantum materials based on hydrogen-bond donor/acceptor-functionalized $\pi$-donors of $C_{1}$ symmetry as illustrated by $\delta$–(EDT-TTF-CONMe$_{2})_{2}$AsF$_{6}$, a non-dimerized, 1/4-filled band Mott insulator and (EDT-TTF-CONH$_{2})_{6}$[ Re$_{6}$Se$_{8}$(CN)$_{6}$] , a metallic molecular Kagomé ($\rm S = 1/2$)where molecular movements are coupled to a Mott localization