Synthesis and X-Ray Crystallographic Analyses of a Ternary Inclusion Complex of Racemic V-Shaped Diheteroaromatic Host with Formic Acid and Water.

A V-shape diquinoline was synthesized so that it used nitro groups as alternative sensor groups to the halogens employed previously. The solid-state structure of its inclusion compound with formic acid was carefully investigated in term of crystal engineering and supramolecular chemistry. A ternary inclusion complex was obtained and its supramolecular interactions were carefully investigated and presented. The suitable X-ray crystals were obtained by crystallization of the host diquinoline from formic acid. The structure adopted acid⋯pyridine hydrogen-bonded cocrystal in addition to other non-covalent interactions. No proton-transfer process was detected; no salt formation. Graphical Abstract: A V-shape diquinoline was synthesized so that it used nitro groups as alternative sensor groups to the halogens employed previously. The solid-state structure of its inclusion compound with formic acid was carefully investigated in term of crystal engineering and supramolecular chemistry. A ternary inclusion complex was obtained and its supramolecular interactions were carefully investigated and presented. The suitable X-ray crystals were obtained by crystallization of the host diquinoline from formic acid (Figure 1).[Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]