Synthesis and spectroscopic studies of manganese porphyrin-thiolate complexes
摘要:
The synthesis and spectroscopic characterization of four manganese(III) porphyrin thiolates are reported. The investigated compounds are represented by (TPP)Mn(SR), where TPP is the dianion of tetraphenylporhyrin and R is C6H5, C6H4(p-NO2), Et2NCS and C4H8NCS. Each complex was characterized by UV-vis and H-1 NMR spectroscopy. The effects of axial ligands on the UV-vis spectra of synthesized manganese porphyrin complexes is discussed and proton isotropic shifts are shown to be predominantly contact in origin, reflecting extensive porphyrin-to-metal pi bonding. (C) 1997 Elsevier Science Ltd.