Abstract
Novel [Fe(4-benzyl-2-hydroxyphenyl-propylidene)2ethylene-diamine], and [Fe (2,4,6-trihydroxy-benzyl-4-metoxiphenyl-methylidene)2ethylene-diamine] complexes were synthesized by reacting FeII salt with the indicated Schiff-base ligands. The compounds were characterized by57Fe Mössbauer spectroscopy, FTIR, UV-VIS, TG-DTA-DTG, MS, AFM, XRD, cyclic voltammetry and biological activity measurements. 295 K and 78 K Mössbauer spectra revealed that iron is dominantly in high spin FeII state in both complexes while simultaneously a minor low spin FeII was also present in both complexes, furthermore a minor high spin FeIII was observed in [Fe(2,4,6-trihydroxy-benzyl-4-metoxiphenyl- methylidene) 2ethylene-diamine], too.
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Acknowledgements
The financial supports from the NKFIH-OTKA (No K115913 and K115784) as well as Hungarian-Croatian S&T (No TÉT_16-1-2016-0002) grants are acknowledged. The authors wish to express their thanks to the “Domus Hungarica Foundation” of Hungary for the fellowships awarded to Csaba Várhelyi Jr.
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This article is part of the Topical Collection on Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2017), Saint-Petersburg, Russia, 3–8 September 2017
Edited by Valentin Semenov
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Várhelyi, C., Lengyel, A., Homonnay, Z. et al. Mössbauer study of novel iron(II) complexes synthesized with Schiff bases. Hyperfine Interact 238, 87 (2017). https://doi.org/10.1007/s10751-017-1463-1
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DOI: https://doi.org/10.1007/s10751-017-1463-1