J Inorg Biochem
January 2025
A new promising binuclear tetranitrosyl iron complex with 2-methoxythiophenolyl of the composition [Fe(CHOS)(NO)] (complex 1), which acts on the therapeutic targets of cardiovascular diseases, guanylate and adenylate cyclase, has been synthesized. X-ray diffraction data show the presence of two isoforms of complex 1; according to quantum chemical calculations, the structure of only the trans isomer is stable in solutions. The processes of transformation of complex 1 in DMSO, in aqueous solutions, as well as in the presence of bovine serum albumin, reduced glutathione, and mucin were studied.
View Article and Find Full Text PDFA novel neutral tetranitrosyl iron complex {[Fe(HO)][FeR(NO)]}·4HO (1) with R = 5-(3-pyridyl)-4-1,2,4-triazole-3-thiolyls (CHNS), which is a supramolecular ensemble, has been synthesized and studied. As follows from X-ray diffraction analysis, this is an octahedral Fecomplex (Lewis acid) with two monoanionic dinitrosyl groups [FeR(NO)] (Lewis base) and 4 water molecules as the ligands. As follows from Mössbauer spectra, the coordinating Fe ion is in a low-spin state = 0, and the dinitrosyl Fe ion is in a low-spin state = 1/2.
View Article and Find Full Text PDFIn this work, a new binuclear nitrosyl complex with 3.4-dichlorothiophenolyl ligands [Fe(SCHCl)(NO)] has been synthesized. Nitrosyl iron complexes (NICs) are systems for the storage and delivery of NO in the body.
View Article and Find Full Text PDFThe iron(III) anionic complex based on a pyruvic acid thiosemicarbazone ligand with the lithium cation Li[Fe(thpy)]·3HO (1) has been synthesized and characterized by FTIR spectroscopy, powder and single crystal X-ray diffraction, direct current magnetic susceptibility measurements, and Fe Mössbauer spectroscopy. Moreover, the molecular structure of the [Fe(thpy)] anion has been determined for the first time. The [Fe(thpy)] units in the triclinic 1̄ lattice of 1 are assembled into layers parallel to the plane.
View Article and Find Full Text PDFWe describe herein the synthesis of (rac)- or enantiopure (S)-(-)-(2-MeBu)N(Pr)₂MeI ammonium salts. These racemic and enantiopure ammonium salts were used as cationic templates to obtain new two-dimensional (2D) ferromagnets [(rac)-(2-MeBu)N(Pr)₂Me][MnCr(C₂O₄)₃] and [(S)-(-)-(2-MeBu)N(Pr)₂Me][ΔMnΛ nCr(C₂O₄)₃]. The absolute configuration of the hexacoordinated Cr(III) metallic ion in the enantiopure 2D network was determined by a circular dichroism measurement.
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