Polyhedron
Polyhedron
3 years ago

The cationic dinitrosyl iron complexes family with thiocarbamide derivatives: Synthesis, structure and properties in the solid state

The cationic dinitrosyl iron complexes family with thiocarbamide derivatives: Synthesis, structure and properties in the solid state
Three new compounds of formulas [Fe(SC(NH2)2)2(NO)2]2(Cl)(ClO4)·H2O (I), [Fe(SC(NH2)2)2(NO)2]ClO4 (II) and [Fe(SC(NHCH3)2)2(NO)2]BF4 (III), which are members of the cationic dinitrosyl iron complexes family (DNICs) with S-donor ligands, have been presented. DNICs I–III were synthesized by direct nitrosylation of acidic solutions of a ferrous salt and thiocarbamide derivatives. The structure and properties of the novel DNICs in the solid state were studied by X-ray analysis, IR, Mössbauer, and EPR spectroscopy. The DNICs with unsubstituted thiourea were studied, and their structural and physical–chemical features were shown to be independent on the counterion type. However, introduction of electron-donating substituents to the thiourea molecule results in a small shift of νNO in the IR spectra, slight increase of δFe , and averaging the g-factor anisotropy. As compared to other DNIC types, cationic DNICs with thiocarbamide derivatives are characterized by the increase in the positive charge on the NO group and higher electrophilic activity and nitrosylating ability, this being the evidence that cationic DNICs are highly effective NO donors.

Publisher URL: www.sciencedirect.com/science

DOI: S0277538717305272

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