作者:T. S. Kurtikyan
DOI:10.1023/a:1024086211505
日期:——
IR studies revealed that unlike iron(II) meso-tetraphenylporphyrinate (FeTPP), NO interacts with sublimed layers of iron(II) meso-mono-4-pyridyltriphenylporphyrinate (FeM4PyTPP) to give two types of nitrosyl complexes. The stretching vibration frequency of the coordinated NO in one of them is close to that observed in the nitrosyl FeTPP complex, while in the other complex, it is 28 cm(-1) lower. The spectral differences observed upon coordination of NO by two porphyrins with similar structures are explained by the fact that in the sublimed FeM4PyTPP layers, the structures are formed in which the pyridyl group of one molecule is coordinated by the metal ion of the neighboring molecule, while the nitrosyl ligand occupies the sixth coordination site. The thermal stability of the complexes formed, the effect of the extra ligands on the layer structure, and the mechanism of the nitrosyl ligand exchange for its isotopic analog (NO)-N-15 are discussed.