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Magnetic interactions in frozen solutions of ironporphyrins

Dziedzic-Kocurek K., Okła D., Stanek J.

Nukleonika

2013

Vol. 58, No. 1

83-86

The powder samples of meso-tetraphenyloporphyrin iron(III) chloride and ferriprotoporphyrin IX chloride and their frozen in solutions N,N-dimethylformamide were studied by Mössbauer spectroscopy. The variation of the outer ligands of the porphyrin rings modifies their magnetic properties but the major influence on the magnetic relaxation process exerts the intermolecular magnetic interactions, which are eliminated in dilute solutions.

Inter - and inframolecular dynamics of iron porphyrins

Dziedzic-Kocurek K., Okła D., Stanek J.

Nukleonika

2013

Vol. 58, No. 1

7-11

The temperature dependent Mössbauer spectroscopy and EXAFS analysis of the dynamical properties of selected iron-porphyrin derivatives: FeTPPCl and FePPIXCl has been presented. It has been shown that these iron-porphyrin properties may be modified by the outer ligands, but they are also strongly influenced by the intermolecular interactions, which are reduced in frozen solutions of the studied complexes.