Solid-state [2+2] Photocycloaddition Reaction of Zinc(II) Complex Based on Quaternized 1,2-Bis(4′-pyridyl)ethylene

Abstract

A photoactive metal-organic complex [Zn₂(BCbpe)₂(p-DBC)₂]·5H₂O(1) has been synthesized based on an olefin-containing pyridinium compound, 1-(4-carboxybenzyl)-4-[2-(4-pyridyl)-vinyl] pyridinium chloride(HBCbpeCl), and characterized by single-crystal X-ray diffraction, IR spectroscopy, powder X-ray diffraction and thermogravimetric analysis, respectively. In the solid state, the BCbpe ligands are packed in a head-to-tail manner through weak cation-π interaction, undergoing a photo-induced cycloaddition quantitatively upon UV-light irradiation.

Keywords

[2+2] cycloaddition / Pyridinium / Solid-state photoreaction

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