Category: 3153-26-2

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 3153-26-2, name is Vanadyl acetylacetonate, introducing its new discovery. COA of Formula: C10H14O5V

A pair of structurally similar dinuclear oxovanadium(V) complexes, [VO 2L1]2 (I) and [VO2L 2]2 (II), where L1 and L2 are the mono-anionic form of 2-[(2-isopropylaminoethylimino)methyl]-4-methylphenol (HL1) and 4-fluoro-2-[(2-isopropylaminoethylimino)methyl]phenol (HL2), respectively, have been synthesized and characterized by elemental analysis, FT-IR spectra, and single crystal X-ray determination. The crystal of I is monoclinic: space group P21/c, a = 12.528(1), b = 12.266(1), c = 9.432(1) A, beta = 104.814(3), V = 1401.2(3) A3, Z = 2. The crystal of I is monoclinic: space group P2 1/n, a = 12.3128(5), b = 6.5124(3), c = 17.1272(7) A, beta = 105.863(1), V = 1321.1(1) A3, Z = 2. The V…V distances are 3.210(1) A in I and 3.219(1) A in II. The V atoms in the complexes are in octahedral coordination. Biological assay indicates that complex II, bearing fluoro-substitute groups, has stronger antimicrobial activity against most bacteria than complex I which bearing methyl-substitute groups.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 3153-26-2 is helpful to your research. COA of Formula: C10H14O5V

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

Electric Literature of 3153-26-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V. In a Article，once mentioned of 3153-26-2

Two new dimeric dioxovanadium complexes, [VO2L1] 2 (1) and [VO2L2]2 (2), where L 1 and L2 are the deprotonated forms of the tridentate Schiff bases 2-[(2-isopropylaminoethylimino)methyl]-4-nitrophenol (HL 1) and 4-bromo-2-[(2-isopropylaminoethylimino)methyl]phenol (HL 2), respectively, have been synthesized and characterized by i.r., UV-Vis spectra and single crystal X-ray diffraction. There form two N-H···O hydrogen bonds between two [VO2L] moieties in each complex. The V atom in each complex is coordinated by the three donor atoms of the tridentate Schiff base ligand, and three oxo O atoms, forming an octahedral coordination.

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

Reference of 3153-26-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V. In a Conference Paper，once mentioned of 3153-26-2

[VO(acac)2] serves as a good precursor and undergoes ligand exchange reaction where one or both acetylacetonato groups can easily be exchanged with organic ligands having coordinating atoms of different potentialities. Usually oxovanadium(IV) complexes form when [VO(acac)2] reacts with ligands under anhydrous conditions. Under aerobic conditions most vanadium complexes stabilize in their highest oxidation state (i.e. V). Factors such as nature of ligands, solvents, pH of the reaction and reaction medium etc. have, however, great influence on the stoichiometry and nature of the resulting complexes. The synthesis and structural characterization of these oxovanadium(V) and dioxovanadium(V) species and their reactivities are considered in this review. Complexes containing phosphorus, and macrocyclic, ligands have also been incorporated. The abstraction of oxygen from [VO(acac)2] under typical reaction conditions and design of non-oxovanadium complexes have also been demonstrated. Relevant coordination chemistry of oxovanadium(IV) is considered where ever necessary.

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

Application of 3153-26-2, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V. In a Article，once mentioned of 3153-26-2

Dark coloured complexes of type VO(L)(Heg) and VO(L)(Hpd) have been synthesized in excellent yields by reacting bis(acetylacetonato)oxovanadium(IV) with H2L in the presence of excess ethane-1,2-diol (H2eg) and propane-1,3-diol (H2pd), respectively in acetone. Here L2- are the deprotonated forms of N-(1-hydroxyethyl)naphthaldimine (H2L1) and N-(1-hydroxy-2-methylpropyl)naphthaldimine (H2L2). Heg- and Hpd- form five- and six-membered V(O,O) chelate rings, respectively. The crystal structure of VO(L2) (Heg) is reported. The ONO-coordinating tridentate [L2]2- spans meridionally and consists of two planar segments mutually popd along a C-N bond. The Heg- ligand forms a non-planar chelate ring in which the dimethylene bridge is in gauche conformation. The five V-O lengths are unequal, the shortest being V-O(oxo) and the longest is V-O(alcoholic) which is subjected to the trans influence of the oxo oxygen atom. In the crystal lattice, the VO(L2) (Heg) molecule forms an infinite chain helical pattern via intermolecular O···O hydrogen bonding. Methylene 1H resonances are systematically shifted to lower field compared to those of free H2eg and H2pd, the shift of the CH2OV resonances being particularly large. The complex multiplet 1H structure in CDCl3 is a good indication of the rigidity of the chelate ring in solution. 51V chemical shifts are found to be diagnostic of the alcohol-alkoxide chelate ring size, the shift of VO(L) (Heg) being ~25 ppm downfield from that of VO(L) (Hpd). Low V(V)/V(IV) reduction potentials (ca. -0.30 V versus SCE) are indicative of the considerable VO3+ stabilization due to two alkoxide coordination. (C) 2000 Elsevier Science Ltd.

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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

A new series of nonoxido vanadium(IV) compounds [VL2] (L = L1-L3) (1-3) have been synthesized using dithiocarbazate-based tridentate Schiff-base ligands H2L1-H2L3, containing an appended phenol ring with a tert-butyl substitution at the 2-position. The compounds are characterized by X-ray diffraction analysis (1, 3), IR, UV-vis, EPR spectroscopy, and electrochemical methods. These are nonoxido VIV complexes that reveal a rare distorted trigonal prismatic arrangement around the “bare” vanadium centers. Concerning the ligand isomerism, the structure of 1 and 3 can be described as intermediate between mer and sym-fac isomers. DFT methods were used to predict the geometry, g and 51V A tensors, electronic structure, and electronic absorption spectrum of compounds 1-3. Hyperfine coupling constants measured in the EPR spectra can be reproduced satisfactorily at the level of theory PBE0/VTZ, whereas the wavelength and intensity of the absorptions in the UV-vis spectra at the level CAM-B3LYP/gen, where “gen” is a general basis set obtained using 6-31+g(d) for S and 6-31g for all the other elements. The results suggest that the electronic structure of 1-3 can be described in terms of a mixing among V-dxy, V-dxz, and V-dyz orbitals in the singly occupied molecular orbital (SOMO), which causes a significant lowering of the absolute value of the 51V hyperfine coupling constant along the x-axis. The cyclic voltammograms of these compounds in dichloroethane solution display three one-electron processes, two in the cathodic and one in the anodic potential range. Process A (E1/2 = +1.06 V) is due to the quasi-reversible V(IV/V) oxidation while process B at E1/2 = -0.085 V is due to the quasi-reversible V(IV/III) reduction, and the third one (process C) at a more negative potential E1/2 = -1.66 V is due to a ligand centered reduction, all potentials being measured vs Ag/AgCl reference. (Chemical Equation Presented).

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

Application 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

[VO(acac)2] reacts with the Schiff bases N’-(2-hydroxy-4- diethylaminobenzylidene)-2-nitrobenzohydrazide (H2BN) and N’- (2-hydroxy-4-diethylaminobenzylidene)-2-methoxybenzohydrazi de (HBM), respectively, in absolute methanol to give the oxovanadium( V) complexes [VO(BN)(OCH3)]2 (1) and [VO2(BM)] (2). Both complexes were characterized by elemental analysis, infrared (IR) spectra, and single-crystal x-ray determination. The complex (1) crystallizes in the monoclinic space group P21/c, with a = 10.828(2), b = 18.177(4), c = 10.778(2) A, beta = 106.914(3), V = 2029.6(7) A3, Z = 4. The complex (2) crystallizes in the triclinic space group P-1, with a = 8.459(2), b = 10.068(3), c = 11.776(3) A, alpha = 88.727(2), beta = 88.904(3), gamma = 69.486(3), V = 939.0(4) A3, Z = 2. Complex (1) is a centrosymmetric methoxy-bridged dimeric oxovanadium(V) compound, and complex (2) is a monomeric dioxovanadium(V) compound. Copyright Taylor & Francis Group, LLC.

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

Synthetic Route of 3153-26-2, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 3153-26-2, Name is Vanadyl acetylacetonate,introducing its new discovery.

A series of new tridentate Schiff base ligands derived from the condensation of 4,5-dinitro-1,2-phenylenediamine and various salicylaldehyde derivatives was synthesized and characterized by common spectroscopic and analytical methods. Oxidovanadium(IV) complexes of tetradentate Schiff base ligands derived from the condensation of this diamine and salicylaldehyde derivatives were also synthesized by template method and were characterized. The crystal structures of a tridentate ligand, HL2, and one of the complexes, VOLig2, were determined by X-ray crystallography. HL 2 crystallizes in triclinic space group P1?, while the VOLig2 (which crystallizes as the DMF solvate) in monoclinic space group P21/n with two [VOLig2] DMF symmetry-independent units per asymmetric part of the unit cell. The electrochemical properties of these complexes were studied by cyclic voltammetry which shows quasi-reversible VIV/VV redox process. The new complexes are also used as catalysts for the selective oxidation of cyclooctene with tert- butylhydroperoxide (TBHP) and H2O2 in acetonitrile. High catalytic activities were observed and excellent selectivity was found for the epoxidation of cyclooctene.

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

Reference 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

Four unsymmetrical oxovanadium phenanthroimidazole complexes, [VO(hntdtsc)(NPIP)] (1), [VO(hntdtsc)(CPIP)] (2), [VO(hntdtsc)(MEPIP)] (3) and [VO(hntdtsc)(HPIP)] (4) (hntdtsc = 2-hydroxy-1-naphthaldehyde thiosemicarbazone, NPIP = 2-(4-nitrophenyl)-imidazo[4,5-f]1,10-phenanthroline, CPIP = 2-(4-chlorphenyl)-imidazo[4,5-f]1,10-phenanthroline), MEPIP = 2-(4-methylphenyl)-imidazo[4,5-f]1,10-phenanthroline), HPIP = 2-(4-hydroxylphenyl)-imidazo[4,5-f] 1,10-phenanthroline), have been synthesized and characterized. Their DNA binding and antitumor activities were determined by biochemical methods. All four oxovanadium complexes can bind with CT-DNA by an intercalation model and can also cleave supercoiled plasmid DNA in the presence of H2O2. The antitumor properties and mechanism of the complexes have been analyzed by MTT assay, cell cycle analysis, apoptosis assay and Western blot analysis. The results showed that the free ligands and their corresponding complexes all possess antiproliferative activities with very low IC50 values against Hela, BIU-87 and SPC-A-1 cell lines. Complex 1, which has a strongly electron-withdrawing nitro group, exhibited the best antiproliferative activities. Complex 1 caused G0/G1 phase arrest of the cell cycle and induced apoptosis in Hela cells. Additionally, complex 1 attenuated the phosphorylation of extracellular signal-regulated kinases 1 and 2 (ERK1/2).This indicates that inhibition of the ERK1/2 signaling pathway may contribute to the antitumor effects of these complexes.

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

Synthetic Route of 3153-26-2, In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 3153-26-2, name is Vanadyl acetylacetonate. In an article，Which mentioned a new discovery about 3153-26-2

Two unsymmetrical oxovanadium complexes [VO(satsc)(dpq)] (1) (satsc = salicylaldehyde thiosemicarbazone, dpq = pyrazino[2,3-f][1,10]phenanthroline) and [VO(hntdtsc)(dpq)] (2) (hntdtsc = 2-hydroxy-1-naphthaldehyde thiosemicarbazone) have been synthesized and characterized. Both complexes show strong interactions with calf thymus DNA through an intercalative model and can efficiently cleave pBR322 DNA after irradiation with light. Both complexes also exhibit high cytotoxicities against SH-SY5Y, MCF-7 and SK-N-SH cell lines. Complex 2 was found to have higher antitumor potency, DNA-binding affinity and DNA-cleaving ability than complex 1. The abilities of these complexes to scavenge hydroxy radicals were evaluated.

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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， Computed Properties of C10H14O5V, Which mentioned a new discovery about 3153-26-2

The reaction of VO(acac)2 with the ONO-chelator obtained by the condensation of salicylaldehyde with 2-hydroxybenzoylhydrazine (H2L) in a monohydric alcohol (ROH) medium produces [VO(OR)L]-type oxidoalkoxido complexes (1-7) where R = Me, nPr, iPr, nBu, iBu, tBu and nPen. All the complexes show the metal atom to have a five-coordinate square pyramidal environment, although in some complexes there is an additional weak V…O interaction in the sixth axial position. In acetonitrile medium and in the presence of a cis-diol (ethylene glycol), H2L reacts with VO(acac)2 to form a six-coordinate complex, [VO(OCH2CH2OH)L] (8). When the reaction is carried out in acetonitrile medium in the presence of 2-amino ethanol, a completely different type of product containing the square pyramidal complex anion [VO2L]- associated with the cation [NH 3CH2CH2OH]+ is obtained. It was noted previously that on being reacted with monodentate nitrogen donor bases B (which are stronger than pyridine), the [VO(OR)L] complexes react to form the same complex anion [VO2L]- associated with the corresponding cation [BH]+. The coordination environment around the V(V) acceptor center of the water soluble [BH]+[VO2L] – satisfies one of the several requirements for an efficient antidiabetic vanadium species such as water solubility, nature of donor atoms of the ligand and their disposition around the VO2+ acceptor center.

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