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Article
Interrelation Between the Spiropyran-Merocyanine Isomerism and the Metal Coordination in 3d Metal Complexes of a Functionalized Spiropyran of the 2-Oxaindane Series
Possible isomers of the N-(3,4-dimethylphenyl)-2-[(7-hydroxy-3′,3′-dimethyl-3′H-spiro[chromene-2,1′-isobenzofuran]-8-yl)methylidine]hydrazinocarbothioamide (HL) spiropyran of the 2-oxaindane series and the [ML(H2
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Article
Enaminoketones: Functional Derivatives Based on 7-Hydroxy-3′,3′-dimethyl-3′H-spiro[chromen-2,1′-isobenzofuran]-8-carbaldehyde with Aromatic Amines. Physicochemical Studies and Biological Activity
The derivatives of the 2-oxaindane series spiropyran (7-hydroxy-3′,3′-dimethyl-3′Н-spiro[chromene-2,1′-isobenzofuran]-8-carbaldehyde) series have been synthesized via its condensation with aromatic amines. The ob...
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Article
Benzofuran Spiropyrans as Analytical Reagents for Low-Molecular-Weight Aminothiols
The problem of determining biologically active low-molecular-weight aminothiols, such as cysteine and glutathione, requires the development of new methods and analytical reagents. Among the latter substances, ...
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Article
Study of the Schiff Base to Enamine-Ketone Rearrangement upon Condensation of Formyl Functionalized 2-Oxaindane Series Spiropyran with Aliphatic Amines
This work focuses on the formyl derivative of 2-oxaindane series spiropyran under its condensation reaction. The data indicated that all products are thermodynamically stable enamine-ketone tautomeric form in ...
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Article
Synthesis, Structure, and Properties of 2-Oxo-3-formylquinolone Acylhydrazone Containing a Trimethylammonium Fragment and also of Transition Metal Complexes Based on This Compound
The product of 3-formyl-2-quinolone condensation with trimethylammonium chloride acethydrazide, (H2L+)Сl– hydrazone, was synthesized. Complexes of Zn(II) and Cu(II), [M(HL)OCH3]ClO4, with a distorted square-plana...
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Article
Regression-Classification Algorithm for Screening of Antiradical Activity of Flavonoids and the Related Structures
A regression-classification algorithm for screening the antiradical activity of flavonoids and the related structures in the media with physiological pH and a specialized kinetic reaction scheme have been prop...
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Article
Unsymmetrical Structure of the Co(III) Complex with Bisheteroarylhydrazone as Hydrazone and Quinolone Tautomers Stabilized by Hydrogen Bond
Bisheteroarylhydrazone (H2L), the product of 2-hydrazinoquinoline condensation with diacetyl, and mononuclear Co(III) complex [Co(HL)2]Br·2DMSO (I) based on this ligand were synthesized. The structure of the chel...
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Article
Synthesis, Structure, and Spectral Properties of Metal Complexes Based on Isonicotinic Acid N′-(10-Oxo-10H-phenanthren-9-ylidene)hydrazide
Isonicotinic acid N′-(10-oxo-10H-phenanthren-9-ylidene)hydrazide (HL) and its complexes ML2 and MHLCl2 [М = Cu(II), Ni(II), Co(II), Fe(II), and Zn(II)] were synthesized. The structure and properties of the obtain...
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Article
Coordination Chemistry and Magnetic Properties of Bi- and Polynuclear Exchange-Coupled Cu(II) and Ni(II) Metal Oximates
This review is an attempt to describe the potential of magnetochemical approach for describing the structure and properties of bi- and polynuclear metal chelates based on coordination compounds with a limited ...
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Article
Copper(II) and Cobalt(II) Carboxylates Containing the 1,3,4-Oxadiazole Fragment: Structures and Properties
Complexes [Сu2L4(MeOH)2] (I) and [СoL2] (II) are synthesized by the reactions of copper(II) and cobalt(II) acetates with 3-[5-p-tolyl)-1,3,4-oxadiazol-2-yl]acrylic acid (HL). The crystal structure of complex I is...
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Article
Synthesis and Crystal Structure of Cobalt(III) Chelate with Tridentate Azomethine Ligand Containing a Benzimidazole Moiety
Azomethine HL was synthesized by the reaction of o-aminophenol with 2-acetylbenzimidazole and used to prepare the cobalt(III) complex [CoL2]2(ClO4)2⋅3H2O (I). The structure of complex I was established by NMR spe...
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Article
Synthesis and Crystal Structure of Iron(II) and Cobalt(III) Complexes with Hetarylhydrazone Derived from o-Diphenylphosphinobenzaldehyde and 1-Hydrazinophthalazine
Reaction of 1-phthalazinylhydrazone of o-diphenylphosphinobenzaldehyde (HL) with Fe(II) and Co(II) perchlorates has led to complexes of different composition and structure: [Fe(HL)2](ClO4)2 · H2O (1) and [CoL2](C...
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Article
Two-Variable Predictive Model of the Antiradical Activity of Hydroxybenzoic Acids in Media with Physiological pH
A regression–classification algorithm to screen natural hydroxybenzoic acids for antiradical activity in media with physiological pH was proposed. The algorithm is based on a combination of descriptor–activity...
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Article
Structure and Properties of the Condensation Product of 2-Oxo-1,2-dihydroquinoline-3-carbaldehyde with Stearic Acid Hydrazide and Its Complexes with Cu(II) and Ni(II)
The complex formation properties of the product 2-oxo-1,2-dihydroquinoline-3-carbaldehyde condensation with stearic acid hydrazide towards Cu(II) and Ni(II) ions has been studied. Composition and structure of ...
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Article
Copper(II) Stearate-Based Copper-Containing Nanomaterials as Antifriction Additives to Lubricating Oils
A simple and affordable method for preparing copper-containing tribological nanomaterials by thermolysis of copper(II) stearate at 300°C was developed. The materials produced were studied by X-ray diffraction,...
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Article
Acylhydrazone Based on 2-N-Tosylaminobenzaldehyde and Girard T Reagent: Synthesis, Structure, and Coordination Ability
The novel hydrazone, a condensation product of 2-N-tosylaminobenzaldehyde and Girard T reagent, as well as the Cu(II), Ni(II), Co(II) and Fe(III) complexes on its base were synthesized. The ligand struc...
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Article
Phenolcarboxylic Acids in the Reaction with Electrogenerated Hydroperoxyl Radical
Using the chronovoltammetric method, it has been shown that the reduction of oxygen on a mercury electrode in the presence of phenolcarboxylic acids in an acidic medium occurs as reversible electrode process f...
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Article
Predictive Model of the Relationship of the Antiradical Activity and the Ionization Potential of Molecules and Ions of Flavonoids
A relationship between the antiradical activity of flavonoids and the molecular descriptors related to the mechanism of their antiradical action was determined by single-variable linear regression analysis in ...
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Article
Synthesis and Selected Physico-Chemical Properties of 2-Aminopyridine-3-carbaldehyde and the Related Metal Complexes
A new hetaryl hydrazone has been obtained via condensation of 2-aminopyridine-3-carbaldehyde with 1-hydrazinophthalazine and its complexing ability with respect to selected metal ions has been studied. Dependi...
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Article
Synthesis, Structural, and Physico-Chemical Study of Transition Metal Complexes with Schiff Base: A Product of Condensation of 2-N-Tosylaminobenzaldehyde and Tryptamine
A new Schiff base, the product of 2-N-tosylaminobenzaldehyde and tryptamine condensation, was synthesized and investigated. A physicochemical study and quantum chemical simulation of the azomethinee tautomerism w...
