Synthesis and Spectroscopic and Structural Characterization of Two Novel Dilutetium Cofacial Porphyrin Dimers

Abstract

Two novel bis(lutetium) cofacial anthracene- or biphenylene-bridged bis(porphyrins), (DPA)[Lu(OH)]2·CH3OH and (DPB)[Lu(OH)]2·CH3OH, have been prepared and characterized by UV−vis, 1H NMR, IR, and mass spectrometry. The structure of the two bis(lutetium) porphyrins has been resolved by a X-ray diffraction study. The two lutetium atoms are bridged by two hydroxy groups. One lutetium atom is hexacoordinated, and the other one is heptacoordinated with a methanol molecule as seventh ligand.