Supramolecular framework of conjugated nitro-alkenes: Crystallographic and hirshfeld surface scan

Structural exploration of functionalised organic materials is the forefront of current research including crystal engineering. Six conjugated nitroalkene mediated heterocyclic analogs were crystallized and investigated its supramolecular characteristics systematically through Hirshfeld surface analysis with special reference to both inter and intra molecular hydrogen bonding patterns leading to its stability in the solid state. Herein the compounds 1–4 are α-aminoalkylated nitroalkenes, where 5 and 6 belong to α-hydroxy methylated nitroalkenes. Those interactions applicable to the present work include H⋯H, S⋯H, C⋯H, N⋯H, O⋯H and π-based interactions together with N···π. H⋯H contact majoring in 1–3 and the mainstream interaction of compounds 4–6 are O⋯H/H⋯O while nitro-π interactions are limited in number but present in variants 1, 5 and 6. Besides the mentioned short contacts, various non-covalent interactions are also involved in the molecular architecture of the organic scaffolds (1–6) are also reported.