Tuning the Reversible Binding of NO to Iron(II) Aminocarboxylate and Related Complexes in Aqueous Solution
β Scribed by Thorsten Schneppensieper; Stefan Finkler; Almut Czap; Rudi van Eldik; Martin Heus; Peter Nieuwenhuizen; Carel Wreesmann; Wiebe Abma
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 716 KB
- Volume
- 2001
- Category
- Article
- ISSN
- 1434-1948
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β¦ Synopsis
Chelate complexes of Fe II were investigated with respect to their reactivity against nitric oxide and dioxygen. Through a systematic variation of the structure of the polyaminocarboxylate EDTA, a series of 38 potential chelate ligands were selected for Fe II . The nitrosyl complexes were prepared from the Fe II chelates with NO gas and examined spectroscopically by UV/Vis and ATR-IR techniques, and themodynamically by determining the overall binding constants for NO. In addition, the reversibility of NO binding to these Fe II chelates and the rate of the competing oxidation by dioxygen were studied qualitatively. Whereas the studied complexes all form more or less stable nitrosyl complexes with a characteristic band pattern in the UV/Vis spectra and only slightly diverging frequencies for the NO stretching vibration in the
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