Inferences from the 1H-NMR Spectroscopic Study of an Antiferromagnetically Coupled Heterobinuclear Fe(Ⅲ)-(X)-Cu(Ⅱ) S = 2 Spin System (X = O~2-, OH-)

摘要

This study considers how the electronic relaxation rate enhancement effects of strong antifereomagnetic coupling in the Fe(Ⅲ)-(X)-Cu(Ⅱ) unit (X = O~2-, OH-) of complexes [(F_8-TPP) Fe(Ⅲ)-(X)-Cu(Ⅱ)(TMOA)]~+ (1), and [(F_8-TPP) Fe(Ⅲ)-(X)-Cu(Ⅱ)(TMOA)]~+ (2) (F_8-TPP=tetrakis(2, 6-difluorophenyl)porphyrinate(2-); TMPA=tris(2- pyridylmethyl)amine) are manifested as observable upfield-shifted resonances of the TMPA moiety in the ~1H-NMR spectra.