Synthesis, molecular structure, hydrogen-bonding, NBO and chemical reactivity analysis of a novel 1,9-bis(2-cyano-2-ethoxycarbonylvinyl)-5-(4-hydroxyphenyl)-dipyrromethane: A combined experimental and theoretical (DFT and QTAIM) approach.

Highlights: [•] FT-IR spectrum of the studied compound was recorded and compared with the theoretical result. [•] All the theoretical calculations were made using DFT/B3LYP/6-31G(d,p) method. [•] NBO analysis are performed to determine the hyperconjugative interactions. [•] QTAIM analysis are performed to determine hydrogen bonding. [•] Chemical reactivity has been explained with the aid of electronic descriptors. [Copyright &y& Elsevier]