التفاصيل البيبلوغرافية
| العنوان: |
The Structural Chemistry of Stable High-Spin Nitrosyl-Iron(II) Compounds with Aminecarboxylato Co-Ligands in Aqueous Solution. |
| المؤلفون: |
Aas, Bianca M.1, Klüfers, Peter1 kluef@cup.uni‐muenchen.de |
| المصدر: |
European Journal of Inorganic Chemistry. 5/3/2017, Vol. 2017 Issue 17, p2313-2320. 8p. |
| مصطلحات موضوعية: |
*HIGH spin physics, *NITROSYL compounds, *IRON compounds, *LIGANDS (Chemistry), *AMINES, *AQUEOUS solutions |
| مستخلص: |
Four crystalline nitrosyl-iron compounds of the {FeNO}7(S = 3/2) type with aminecarboxylato co-ligands were prepared from aqueous solutions of iron(II) sulfate, an equimolar amount of one of the co-ligands ethylenediamine-N,N'-diacetate (edda), nitrilotriacetate (nta), N,N'-bis(2-hydroxyethyl) ethylenediamine-N,N'-diacetate (bhedda) or ethylenediamine-N,N,N',N'-tetraacetate (edta) and gaseous nitric oxide. The hemihydrate [Fe(edda)(H2O)(NO)]·0.5H2O (1·0.5H2O), a hydrated coordination polymer [{Fe(H2O)4}{Fe(NO)(nta)}2]n/n· 2H2O = [Fe(H2O)4(2)2]n/n·2H2O with [Fe(NO)(nta)]- (2) monoanions, the solvent-free complex [Fe(bhedda)(NO)] (3) and an-other coordination polymer [Fe(H2O)2{Fe(NO)(Hedta)}2]n/n = [Fe(H2O)2(4)2]n/n with [Fe(Hedta)(NO)]- (4) monoanions were investigated by crystallography and IR and UV/Vis spectroscopy. Structural peculiarities, such as a tilt of the NO ligand toward the O atom of a neighbouring carboxylato ligand, were analysed by DFT calculations. The stability of the aqueous solutions of the target compounds against inert-gas stripping was related to the low amount of the less stable aqua complex [Fe(H2O)5(NO)]2+ in the aqueous equilibria in addition to the intrinsic stability of the species. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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