Metal ions control configuration and 1O2 generation capacity of hexaphyrin(2.1.2.1.2.1) with embedded benzene

Abstract

Group 10 metal complexes of figure-of-eight–shaped hexaphyrin(2.1.2.1.2.1) with embedded benzene were revealed. Mono-Ni(II) 1Ni and bis-Pd(II) 2Pd complexes were obtained. Inspection of the crystal structure of 2Pd showed two Pd(II) ions coordinated with six N atoms and two Pd(II) ions bridged by a Cl atom accompanied by rotation of one pyrrolic unit. The structures and ¹O₂ generation studies of 1Ni and 2Pd under yellow laser beam irradiation indicated that the molecular structural and physicochemical properties of hexaphyrin(2.1.2.1.2.1) can be regulated and controlled by inserted metal ions.