Category: 3153-26-2

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 3153-26-2, molcular formula is C10H14O5V, introducing its new discovery. Computed Properties of C10H14O5V

Some new complexes derived from VO(II), Ag(I) and Pd(II) metal ions and HNA imine ligand (L), i.e. (2-((6-allylidene-2-hydroxycyclohexa-1,3-dienylmethylene)amino)benzoic acid), have been prepared and their structures elucidated via molar conductance measurements, elemental analyses, infrared, NMR and electronic spectra and magnetic susceptibility estimations. Moreover, stability constants of the synthesized complexes were evaluated utilizing a spectrophotometric technique. On the basis of molar conductance and elemental analyses, the metal imine chelates have structure [M(L)], where M = Pd(II), VO(II) and Ag(I). The results indicate that the prepared HNA imine ligand acts as a tridentate moiety via nitrogen atom of azomethine group and two oxygen atoms of phenolic and carboxylic groups. All the complexes are found to be monomeric with 1:1 stoichiometry with square planar geometry for Pd(II), tetrahedral geometry for Ag(I) and distorted square pyramidal for VO(II). Theoretical density functional theory calculations were applied to verify the molecular geometry of the chelators and their metal chelates. The geometry optimization results are in agreement with experimental observations. The antimicrobial properties of the prepared HNA imine ligand and its metal chelates were evaluated against numerous plant pathogenic fungi and bacteria. The results of these studies indicate that the metal complexes exhibit a stronger antibacterial and antifungal effect compared to the imine ligand. In addition, the interaction of the metal imine chelates with calf thymus DNA was observed by way of viscosity, gel electrophoreses and spectral studies. Absorption titration studies reveal that each of the complexes is an avid binder to calf thymus DNA. Also, there are appreciable changes in the relative viscosity of DNA, which are consistent with enhanced hydrophobic interaction of the aromatic rings and intercalation mode of binding. Additionally, the cytotoxic activity of the investigated compounds against various cancer cell lines shows promising results which makes them prospective compounds for antibiotic and anticancer medicament studies. Furthermore, docking studies of the prepared compounds were conducted for confirming the biological results.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Recommanded Product: 3153-26-2, Which mentioned a new discovery about 3153-26-2

A new bidentate ON Schiff base ligand, HL, was synthesized by simple condensation reaction of isopropylamine and salicylaldehyde. Then by reaction of HL and VO(acac)2 in the ratio of 2:1 at ambient temperature, a new oxovanadium(IV) Schiff base complex, VOL2, was synthesized. The Schiff base ligand and its oxovanadium(IV) complex were characterized by elemental analyses, FT-IR, 1H NMR, 13C NMR and UV-visible spectroscopies. The crystal structure of oxovanadium(IV) complex, VOL2, was also determined by single crystal X-ray analysis. The vanadium center in this structure is coordinated to two bidentate Schiff base ligands with the two nitrogen and two phenolate oxygen atoms in equatorial positions and one oxo oxygen in the axial position to complete the distorted trigonal bipyramidal N2O3 coordination sphere. Catalytic performance of the VOL2 complex was studied in the selective oxidation of thioanisole with the green oxidant 35% aqueous H2O2 under solvent-free conditions and under organic solvents (EtOH, CHCl3, CH2Cl2, DMF, CH3CN, EtOAc) as a model. Due to better catalytic performance of the VOL2 complex under solvent-free conditions, this complex used for the oxidation of the different sulfides to the corresponding sulfones under solvent-free conditions. The use of hydrogen peroxide as oxidant and the absence of solvent makes these reactions interesting from environmental and economic points of view.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 3153-26-2, molcular formula is C10H14O5V, introducing its new discovery. Computed Properties of C10H14O5V

Some new complexes derived from VO(II), Ag(I) and Pd(II) metal ions and HNA imine ligand (L), i.e. (2-((6-allylidene-2-hydroxycyclohexa-1,3-dienylmethylene)amino)benzoic acid), have been prepared and their structures elucidated via molar conductance measurements, elemental analyses, infrared, NMR and electronic spectra and magnetic susceptibility estimations. Moreover, stability constants of the synthesized complexes were evaluated utilizing a spectrophotometric technique. On the basis of molar conductance and elemental analyses, the metal imine chelates have structure [M(L)], where M = Pd(II), VO(II) and Ag(I). The results indicate that the prepared HNA imine ligand acts as a tridentate moiety via nitrogen atom of azomethine group and two oxygen atoms of phenolic and carboxylic groups. All the complexes are found to be monomeric with 1:1 stoichiometry with square planar geometry for Pd(II), tetrahedral geometry for Ag(I) and distorted square pyramidal for VO(II). Theoretical density functional theory calculations were applied to verify the molecular geometry of the chelators and their metal chelates. The geometry optimization results are in agreement with experimental observations. The antimicrobial properties of the prepared HNA imine ligand and its metal chelates were evaluated against numerous plant pathogenic fungi and bacteria. The results of these studies indicate that the metal complexes exhibit a stronger antibacterial and antifungal effect compared to the imine ligand. In addition, the interaction of the metal imine chelates with calf thymus DNA was observed by way of viscosity, gel electrophoreses and spectral studies. Absorption titration studies reveal that each of the complexes is an avid binder to calf thymus DNA. Also, there are appreciable changes in the relative viscosity of DNA, which are consistent with enhanced hydrophobic interaction of the aromatic rings and intercalation mode of binding. Additionally, the cytotoxic activity of the investigated compounds against various cancer cell lines shows promising results which makes them prospective compounds for antibiotic and anticancer medicament studies. Furthermore, docking studies of the prepared compounds were conducted for confirming the biological results.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Quality Control of: Vanadyl acetylacetonate, Which mentioned a new discovery about 3153-26-2

A new oxido-vanadium(V) complex, [VO(L)(PrOH)(OPr)] (L = [(3-methoxy-2oxidobenzylidene)benzohydrazidato], PrOH = propanol, OPr = propanolato) has been synthesized and characterized by means of elemental analysis, Fourier transform infrared (FTIR), proton nuclear magnetic resonance (1HNMR), ultaviolet-visible (UV-Vis) spectroscopy, voltammetry and molar conductivity measurement. The structure of the complex has also determined using single crystal X-ray diffraction. The geometric structure around the V(V) ion has been found to be octahedral in which the positions around the central ion are occupied by ONO ligand donors, oxido groups, and oxygen atoms of coordinated propanol and propoxide group. Electrochemical behavior of this complex is also discussed in more details. In vitro antimicrobial effect of the title complex has investigated exhibiting significant activities against some Gram-positive (Staphylococcus aureus, Micrococcus luteus, Bacillus cereus, Eterococcus faecalis) and Gram-negative bacteria (Pseudomonas aeruginosa, Escherichia coli, Klebsiella sp, Pseudomonas sp) and fungus strain (Candida albicans).

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Application of 3153-26-2, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V. In a Article，once mentioned of 3153-26-2

The Preparation and Structure of *CH2Cl2 and of Some Homologues of Related Schiff Bases

The elusive < salen = N,N'-ethylenebis(salicylideneiminate)(2-)> and some of its homologues have been successfully prepared.The structure of *CH2Cl2 has been determined by X-ray crystallography, and the conformation is trans-octahedral, as expected, with long V-I separations.The complex is air-stable in the solid state, but appears to be moisture-sensitive in solution, and undergoes autoredox reactions (V(IV) –> V(III), I(-) –> I2) in ionising solvents.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Formula: C10H14O5V, Which mentioned a new discovery about 3153-26-2

Effects of Fe, Ti, and v doping on the microstructure and electrical properties of grain and grain boundary of giant dielectric NiO-based ceramics

We report the giant dielectric response and electrical properties of Li0.05 B0.02 Ni0.93 O (B=Fe, Ti, and V) ceramics prepared by a polymer pyrolysis route. The giant dielectric response in these materials can be ascribed based on the Maxwell-Wagner polarization and thermally activated mechanisms. It is found that Fe, Ti, and V doping has a strong effect on the microstructure and the conduction of grains and grain boundaries of these NiO-based ceramic systems, which make large contribution to their dielectric properties.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Formula: C10H14O5V, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V. In a Patent, authors is ，once mentioned of 3153-26-2

VANADIUM COMPLEXES WITH HYDRAZIDE-HYDRAZONES, PROCESS FOR THEIR PREPARATION, PHARMACEUTICAL FORMULATIONS AND THE USE OF THEREOF.

Vanadium complexes of the general formula M[VX(ONO)y(L)n]-mS, wherein X is oxygen or is absent, L is L1or L2, wherein Li represents a halogen anion or a neutral molecule or deprotonated solvent selected from the group comprising C1-C12 alcohols and/or water, and L2 is a neutral or anionic NN, NO or OO-donor ligand selected from the group consisting of: polypyridine, 1,10-phenanthroline, pyrones, quinoline or pyridine carboxylic acids, S is a neutral solvent molecule selected from the group consisting of C 1-C4 alcohols, water or sulfuric acid, M may be absent, and when present it is monocharged alkali metal cation, ammonium cation, alkylammonium cation, and the letters O and N represent atom, by which the ligand is bound to vanadium. The invention also includes a method for making vanadium complexes, pharmaceutical preparations containing these complexes and the use of the complexes.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is traditionally divided into organic and inorganic chemistry. Computed Properties of C10H14O5V. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 3153-26-2

Speciation in aqueous solution and interaction with low and high molecular mass blood bioligands of [VIVO(oda)(H2O)2], a V compound with in vitro anticancer activity

In this work the speciation in aqueous solution of the compound [VIVO(oda)(H2O)2], where oda is oxydiacetate dianion (OOCCH2)2O, which shows in vitro anticancer activity, was studied. Its interaction with the two serum bioligands with highest affinity for VIV, lactic (Hlact) and citric (H3citr) acid, and with the two proteins candidate to participate to the transport of VIVO compounds in the organism, transferrin (hTf) and albumin (HSA), was also examined. The study was carried out with the combined application of spectroscopic (Electron Paramagnetic Resonance, EPR), analytical (pH-potentiometry) and computational (Density Functional Theory, DFT) methods. The results showed that in aqueous solution [VO(oda)(H2O)2] undergoes hydrolysis above pH 4?5 with formation of the EPR-active species [(VO)2(oda)2(OH)2]2? around pH 6 and of [(VO)2(OH)5]? at physiological pH. DFT calculations suggested that the most stable isomers of 1:1 species are the hexa-coordinated OC-6-23 with a mer arrangement of oda ? similar to that observed in the solid state ? and the penta-coordinated SPY-5-14, whereas for 1:2 species the fac arrangement of oda is favored. Citrate is able to displace completely the oda ligand in [VO(oda)(H2O)2] and only the dinuclear species [(VO)2(citrH-1)2]4? was detected at pH 7.4, while with lactate the formation of a mixed complex VIVO?oda?lact was observed. [VO(oda)(H2O)2] interacts with apo-transferrin forming a mixed complex (VO)(hTf)(oda) where vanadium is bound in the iron sites and oda behaves as a synergistic anion, while with albumin no interaction was revealed. Model calculations suggest that when [VO(oda)(H2O)2] is administered orally (concentration ca. 1?10 muM) or by injection (concentration approximately in the range 10?100 muM), (VO)(hTf) and (VO)2(hTf) should be formed; these species could reach the target organs and be recognized by the hTf receptors of the cells, favoring the vanadium uptake.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Reference of 3153-26-2, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V. In a article，once mentioned of 3153-26-2

A kinetic electron spin resonance study of the reaction of some oxy radicals with vanadyl acetylacetonate

Reactions of phenyloxyl, iminoxyl, nitroxyl, peroxyl, and alkyloxyl radicals with VO(acac)2 in solution have been studied by kinetic esr spectroscopy.Rates of reaction are first-order with respect to each reactant and radical reactivity increases in the order galvinoxyl < 2,4,6-tri-tert-butylphenoxyl < di(1-adamantyl)methylene-iminoxyl < tert-butylperoxyl.Rates of reaction are retarded by pyridine and accelerated by methanol and there is an isotope effect on the rate when the hydroxyl proton of CH3OH is replaced by deuterium.Vanadium-51 spectroscopy has demonstrated that several vanadium(V) products are formed while conventional product studies have indicated that, in the case of phenoxyl and alkoxyl, the radical is reduced almost exclusively to the parent phenol and alcohol and that VO(acac)2 is eventually regenerated in substantial yields.The net reaction is, therefore, catalytic reduction of the radical.Variable temperature esr studies have shown that phenoxyl and iminoxyl radicals and VO(acac)2 exist in equilibrium with diamagnetic reaction products. We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 3153-26-2, and how the biochemistry of the body works.Reference of 3153-26-2

Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, name: Vanadyl acetylacetonate, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V. In a Article, authors is Biswas, Nirmalendu，once mentioned of 3153-26-2

Two sets of mixed-ligand complexes were synthesized and characterized, namely, [VIVO(L1-4)(phen)] (1-4) and [VVO(L1-4)(hq)] (5-8) incorporating 2-aminobenzoylhydrazone of 2-hydroxyacetophenone (H2L1), 2-hydroxy-5-methylacetophenone (H2L2), 2-hydroxy-5-methoxyacetophenone (H2L3) and 5-chloro-2-hydroxyacetophenone (H2L4) as primary ligands together with 1,10-phenanthroline (phen) and 8-hydroxyquinoline (Hhq) as co-ligands. The complexes were characterized by elemental analyses, magnetic susceptibility measurements and various spectroscopic techniques. The structures of complexes 2, 5 and 8 were determined by single crystal X-ray diffractometry. This study indicates that the co-ligands have remarkable effects on the selective stabilization of the oxidation state of vanadium because the neutral N,N donor phen ligand stabilizes the +IV state, while the monobasic O-,N donor hq- ligand stabilizes the +V state. Substituents on the aryloxy ring also had significant effects on the electronic properties of vanadium in the resulting complexes. The E1/2 values of all the complexes and the lambdamax values for the LMCT transitions of pentavalent complexes 5-8 exhibited linear relationships with the Hammett parameter of the substituent. The complexes exhibited promising cytotoxic activity against lung cancer cells. Interestingly, complexes 2, 3 and 4 (with IC50 values of ca. 2.5 muM) exhibited cytotoxic activity comparable to that found for the widely used cisplatin (also with an IC50 value of 2.5 muM). Nuclear staining experiments suggest that the complexes kill the cells through apoptosis, which is further substantiated by molecular docking studies. These complexes also exhibited potential antimicrobial activity against Escherichia coli, Bacillus subtilis, Staphylococcus aureus and Salmonella typhimurium.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI