Synthesis and Properties of N,C,S-Pincer Iron Carbonyl Complexes Bearing a Quinolyl Group

摘要

Dissociation of carbonyl ligands in transition metal complexes by electronic excitation is a useful property because the formed vacant coordination site can be utilized in catalytic reactions as well as synthetic chemistry. Furthermore, development of the controllable CO release from carbonyl complexes has become an important research area since CO was recognized as a signaling molecule in biological pathways. The wavelength dependence of the photoinduced dissociation of CO is highly related to the electronic structures of the carbonyl complexes. Previously we reported that near-infrared light-triggered release of CO is achievable by using N,C,S-pincer iron(III) carbonyl complexes with two axial phosphorus ligands. In this study, we newly designed an N,C,S-tridentate ligand with a quinolyl group to modulate the electronic structure.