Two ruthenium nitrosyl complexes of Na[RuNOClL] with nitronyl nitroxide radicals coordinated to ruthenium with N-donor pyridine rings were prepared and described. The crystal structure of both complexes is 1D or 2D polymeric, due to the additional coordination of sodium cation by bridging the chloride ligands or oxygen atoms of nitroxides. Partially, the oligomeric forms remain in the solutions of the complexes in acetonitrile. The magnetic measurements in the solid state demonstrate the presence of antiferromagnetic interactions through the exchange channels, with the distance between paramagnetic centers equal to 3.1-3.9 Å. The electrochemical behavior of the prepared complexes was investigated in acetonitrile solutions.
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http://dx.doi.org/10.3390/ijms241713371 | DOI Listing |
Chem Biol Interact
January 2025
Department of Biological Chemistry, Regional University of Cariri, 63105-000, Crato, CE, Brazil.
Radiat Prot Dosimetry
November 2024
Department of Radioecology, Institute for Environmental Sciences, 1-7, Ienomae, Obuchi, Rokkasho, Kamikita, Aomori, 039-3212, Japan.
Inorg Chem
November 2024
São Carlos Institute of Chemistry, University of São Paulo, São Carlos 13560-970, SP,Brazil.
Ruthenium(II) tetraamine nitrosyl complexes with N-heterocyclic ligands are known for their potential as nitric oxide (NO) donors, capable of releasing NO through either direct photodissociation or one-electron reduction of the Ru(II)NO center. This study delivers a novel insight into the one-electron reduction mechanism for the model complex -[Ru(NO)(NH)(py)] (RuNOpy, py = pyridine) in phosphate buffer solution (pH 7.4).
View Article and Find Full Text PDFAdv Mater
December 2024
Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders (LEAD), Songjiang Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 201600, China.
Conventional bone tissue engineering materials struggle to reinstate physiological bone remodeling in a diabetic context, primarily due to the compromised repolarization of proinflammatory macrophages to anti-inflammatory macrophages. Here, leveraging single-cell RNA sequencing (scRNA-seq) technology, the pivotal role of nitric oxide (NO) and reactive oxygen species (ROS) is unveiled in impeding macrophage repolarization during physiological bone remodeling amidst diabetes. Guided by scRNA-seq analysis, we engineer a multienzymatic bone tissue engineering hydrogel scaffold (MEBTHS) composed is engineered of methylpropenylated gelatin hydrogel integrated with ruthenium nanozymes, possessing both Ru and Ru components.
View Article and Find Full Text PDFDalton Trans
November 2024
Université de Lorraine, CNRS, CRM2, UMR 7036, Nancy 54000, France.
A new nitro-nitrosyl complex [RuNO(Phen)(NO)OH] (1) was synthesized and characterized by X-ray diffraction, where Phen = 1,10-phenanthroline. The complex was crystallized in two different modifications without (1) and with a solvent molecule of DMF (1a). The photolysis process together with the determination of the quantum yield of NO release was investigated in acetonitrile solution using a special flow-through system for the simultaneous registration of infrared (IR) and optical absorption (UV-vis) spectra under irradiation with 450 nm light.
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