Synthesis of organic photodimeric cage molecules based on cycloaddition via metal-ligand directed assembly
byEubank J.F., Kravtsov V.C., Eddaoudi M.
Journal of the American Chemical Society, 129 (18), 2007, 5820-5821
Metal-ligand directed assembly of copper(II) ions and chelidonate (CDO) ligands into a metal-organic assembly has resulted in the proper orientation and positioning of CDO ligands for [2 + 2] photodimerization in the solid state. Upon exposure to ultraviolet light, pairs of adjacent CDO ligands photoreact via single-crystal-to-single-crystal cycloaddition to form novel cage dimers within the metal-organic assembly, which can be isolated successively as the organic sodium salt.