Category: 105-83-9

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We report the synthesis of a Co(III) complex with the five-coordinate salen-type ligand (N,N?-bis(3,5-di-tert-butyl-2-hydroxybenzyliden)-1,7-diamino-4-methyl-4-azaheptane). This complex is stable in air with a trigonal bipyramidal geometry and we show spectroscopically and computationally that a high-spin triplet ground state is preferred. This spin state is readily modulated by introduction of an exogenous ligand (pyridine, acetonitrile) to yield a six-coordinate complex with low-spin ground state. The five-coordinate complex exhibits solvent- and ligand-dependent electrochemical behavior in solution for the CoII/III transition and undergoes a one-electron ligand oxidation to generate a phenoxyl radical species that is relatively stable in the absence of oxygen. We show that this phenoxyl radical species is a Class I mixed-valence compound that can undergo photoinduced inner-sphere charge transfer with the neighboring phenoxide. This process is mediated by the Co(III) center which acts as a bridge. Understanding this behavior will lead to a better understanding of a dicobalt bis-salen analog previously reported by our group as a proton reduction catalyst.

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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, COA of Formula: C7H19N3, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 105-83-9, Name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, molecular formula is C7H19N3. In a Article, authors is Gumpper, Ryan H.，once mentioned of 105-83-9

Polyamides have been shown to bind double-stranded DNA by complementing the curvature of the minor groove and forming various hydrogen bonds with DNA. Several polyamide molecules have been found to have potent antiviral activities against papillomavirus, a double-stranded DNA virus. By analogy, we reason that polyamides may also interact with the structured RNA bound in the nucleocapsid of a negative-strand RNA virus. Vesicular stomatitis virus (VSV) was selected as a prototype virus to test this possibility since its genomic RNA encapsidated in the nucleocapsid forms a structure resembling one strand of an A-form RNA duplex. One polyamide molecule, UMSL1011, was found to inhibit infection of VSV. To confirm that the polyamide targeted the nucleocapsid, a nucleocapsid-like particle (NLP) was incubated with UMSL1011. The encapsidated RNA in the polyamide-treated NLP was protected from thermo-release and digestion by RNase A. UMSL1011 also inhibits viral RNA synthesis in the intracellular activity assay for the viral RNA-dependent RNA polymerase. The crystal structure revealed that UMSL1011 binds the structured RNA in the nucleocapsid. The conclusion of our studies is that the RNA in the nucleocapsid is a viable antiviral target of polyamides. Since the RNA structure in the nucleocapsid is similar in all negative-strand RNA viruses, polyamides may be optimized to target the specific RNA genome of a negative-strand RNA virus, such as respiratory syncytial virus and Ebola virus.

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

Application of 105-83-9, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 105-83-9, Name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, molecular formula is C7H19N3. In a Article，once mentioned of 105-83-9

(Figure Presented) Hydrogen-bonding interactions drive oligosquaramides of different lengths to fold into hairpin-like structures both in nonprotic and protic solvents. These compounds are useful preorganized precursors in macrocyclization reactions.

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

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, 105-83-9, name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, introducing its new discovery. Recommanded Product: 105-83-9

New pH-responsive nanosponges were obtained by reacting four different polyaminocyclodextrins with heptakis-(6-bromo)-(6-deoxy)-beta-cyclodextrin. The materials obtained were characterized by various techniques (FT-IR, potentiometric titration, differential scanning calorimetry (DSC), porosimetry (BET), 13C{1H} CP-MAS NMR). Their adsorption abilities at different pH values were verified towards a suitable set of model guests, and seem mainly controlled by electrostatic interactions, as a function of the protonation/charge status of the polymer matrix. By contrast, data positively point out a lesser importance assumed by the induced-fit effect, important in affecting the formation of host-guest complexes in solution. The frequency-switched Lee-Goldburg (FSLG) heteronuclear correlation solid-state NMR technique was exploited in order to assess the possible location of the guests within the polymer matrix.

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 105-83-9 is helpful to your research. Recommanded Product: 105-83-9

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

Electric Literature of 105-83-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.105-83-9, Name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, molecular formula is C7H19N3. In a Article，once mentioned of 105-83-9

Herein, we report the syntheses, spectral and structural characterization, and magnetic behavior of four new dinuclear terephthalato-bridged copper(II) complexes with formulae [Cu2(trpn)2(mu-tp)](ClO 4)2·2H2O (1), [Cu2(aepn) 2(mu-tp)(ClO4)2] (2), [Cu2(Medpt) 2(mu-tp)(H2O)2](ClO4)2 (3) and [Cu2(Et2dien)2(mu-tp)(H 2O)](ClO4)2 (4) where tp = terephthalate dianion, trpn = tris(3-aminopropyl)-amin, aepn = N-(2-aminoethyl)-1,3- propanediamine, Medpt = 3,3?-diamino-N-methyldipropylmine and Et 2dien = N,N-diethyldiethylenetriamine. The structures of these complexes consist of two mu-tp bridging Cu(II) centers in a bis(monodentate) bonding fashion. The coordination geometry of the Cu(II) ions in these compounds may be described as close to square-based pyramid (SP) with severe significant distortion towards trigonal bipyramid (TBP) stereochemistry in 1. The visible spectra of the complexes in aqueous solutions are in complete agreement with the assigned X-ray geometry around the Cu(II) centers. Also, the solid infrared spectral data for the stretching frequencies of the tp-carboxalato groups, the nu(COO-) reveals the existence of bis(monodentate) coordination mode for the bridged terephthalate ligand. The susceptibility measurements at variable temperature over the range 2-300 K are reported. Despite the same bonding mode of the tp bridging ligand, there has been observed slight antiferromagnetic coupling for the compounds 1 and 4 with J values of -0.5 and -2.9 cm3 K mol-1, respectively, and very weak ferromagnetic coupling for 2 and 3 with J values of 0.8 and 10.1 cm3 K mol-1, respectively. The magnetic results are discussed in relation to other related mu-terephthalato dinuclear Cu(II) published compounds.

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

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Eight oxamato-bridged heterotrinuclear NiIICuIINiII complexes of formula {[Ni(H2O)(dpt)]2(mu-Cu(H2O)(opba))} (ClO4)2 (1), {[Ni(H2O)(dien)]2(mu-Cu(pba))}(ClO4) 2·6H2O (2), {[Ni(H2O)(Medpt)]2(mu-Cu(OHpba))} (ClO4)2·4H2O (3), {[Ni(H2O)- (dien)]2(mu-Cu(Me2pba))} (ClO4)2·2.5H2O (4), {[Ni(H2O)(dpt)]2(mu-Cu(Me2pba))} (ClO4)2·2H2O (5), {[Ni(H2O)(dien)]2(mu- Cu(OHpba))}(ClO4)2·4H2O (6), {[Ni2(dpt)2(mu-Cu(H2O) (pba))]2(mu-N3)2}Na2 (ClO4)4·6H2O (7), and {[Cu(H2O)2(dpt)Ni2- (H2O)(dpt)2](mu-H2 Me2pba(2-))}(ClO4)4·3H2O (8) in which opba = o-phenylenbis(oxamato), pba = 1,3- propylenebis(oxamato), OHpba = 2-hydroxy-1,3-propylenebis(oxamato), Me2pba = 2,2-dimethyl-1,3-propylenbis(oxamato), dpt = 3,3?-diaminodipropylamine, dien = 2,2?-diaminodiethylamine, and Medpt = 3,3?-diamino-N-methyldipropylamine were synthesized and characterized. The crystal structures of 1, 7, and 8 were solved. For complex 1, the trinuclear entities are linked by hydrogen bonds forming a one-dimensional system, and for complex 8, the presence of van der Waals interactions gives a one-dimensional system, too. For complex 7, the trinuclear entities are self-assembled by azido ligands, given a hexanuclear system; each of these hexanuclear entities are self-assembled through two [Na(O)3(H2O)3] octahedral-sharing one-edge entities, given a one-dimensional system. The magnetic behavior of complexes 2-7 was investigated by variable-temperature magnetic susceptibility measurements. Complexes 2-6 exhibit the minimum characteristic of this kind of polymetallic species with an irregular spin state structure. The J value through the oxamato bridge varied between -88 cm-1 (for 6) and -111.2 cm-1 (for 5). For complex 7, the values obtained were J1 = -101.7 cm-1 (through the oxamato ligand) and J2 = -3.2 cm-1 (through the azido ligand).

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

Synthetic Route of 105-83-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.105-83-9, Name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, molecular formula is C7H19N3. In a Article，once mentioned of 105-83-9

The vascular endothelial growth factor (VEGF) and its receptors have been implicated as key-factors in tumor angiogenesis and are major targets in cancer therapy. New oligomers which mimic the architecture of DNA-binding polyamides have been designed to target the hypoxia inducible factor (HIF-1alpha) binding site on the promoter of VEGF gene. These oligomers incorporate an increasing number of six-five fused rings such as hydroxybenzimidazole-imidazole, benzimidazole-pyrrole, benzimidazole-chlorothiophene, and imidazopyridine-pyrrole, and bind the VEGF hypoxia response element (HRE) 5?-TACGT-3? with high affinity and selectivity.

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

Synthetic Route of 105-83-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.105-83-9, Name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, molecular formula is C7H19N3. In a Article，once mentioned of 105-83-9

Abstract: Three new heterobimetallic cyanide-bridged complexes, { [ Ni (L 1) ] [ Ag(CN) 2] } [ Ag(CN) 2] · 2H 2O (2), { [ Mn (L 2) ] [ Ag(CN) 2] } · 1.5 H 2O (3) and {[Mn(L3)(H2O)]2[Ag(CN)2]}ClO4·2H2O (4) (L 1= 2,7,12-trimethyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-triene; L 2 = N,N?-1,3-propylene-bis(5-chlorosalicylideneiminate); L 3 = N,N?-1,2-propylene-bis(5-bromosalicylideneiminate)), have been assembled using for the first time a new polyaza macrocycle nickel(II) compound [Ni(L1)](ClO4)2(1), or Schiff-base manganese(III) compounds and K [ Ag(CN) 2]. Single crystal X-ray diffraction analysis reveals that complexes 2 and 3 can be characterized as one-dimensional cationic and neutral single chain structure, respectively. Complex 3 forms a three-dimensional network via weak inter-chain Ag..Ag interactions. Complex 4 belongs to a cyanide-bridged bimetallic sandwich-like cationic trinuclear structure containing Mn 2Ag core with free ClO4- as a counter anion, indicating that the Schiff-base ligand has an obvious influence on the structure of the cyanide-bridged complexes formed. Investigation of the magnetic susceptibilities of the cyanide-bridged Ag-Ni(II)/Mn(III) complexes showed the weak anti-ferromagnetic interaction between neighboring paramagnetic Ni(II) or Mn(III) ions bridged by the long NC-Ag-CN unit. From the best-fit of the magnetic susceptibility data of complexes 2 and 4 the magnetic coupling constant was determined to be J= – 0.51 and -0.78cm-1, respectively. Graphical Abstract : SYNOPSIS Three new heterobimetallic cyanide-bridged complexes with 1D or polynuclear structures were assembled from polyaza macrocycle nickel(II) or manganese(III) Schiff-base with K [ Ag(CN) 2] as building block. Investigation over the magnetic susceptibilities of the cyanide-bridged Ag-Ni(II)/Mn(III) complexes showed weak antiferromagnetic interaction between neighboring Ni(II) or Mn(III) ions bridged by the NC-Ag-CN unit.[Figure not available: see fulltext.].

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

Related Products of 105-83-9, 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.105-83-9, Name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, molecular formula is C7H19N3. In a article，once mentioned of 105-83-9

Dicamba is a widely applied herbicide for crop protection and has potential for volatility. New formulations containing dicamba with greatly reduced volatility, introduced to the market in 2017, still caused foliar injury to crops and other plants in Arkansas and neighboring states in the United States. In response, we proposed the transformation of dicamba into protic as well as aprotic dicamba-based organic salts called herbicidal ionic liquids (HILs). All of the HILs were characterized by high stability, whereas the biological activity of the most effective products, evaluated during greenhouse studies, was found to be greater than that of currently used commercial analogues. Furthermore, the possibility of introducing an alkyl chain of a specific length allows one to obtain plant protection products with the desired physicochemical properties while maintaining herbicidal effectiveness. These studies are expected to aid in the design and development of new herbicidal formulations, which, depending on the weed species, could increase the efficacy of the applied active ingredient. Simultaneously, the volatility of the synthesized compounds, particularly those containing quaternary ammonium cations, was multiple times lower than that of the free acid of dicamba. This strategy minimizes the risk of off-site movement via volatilization, which may cause significant damage to neighboring broadleaf crops and pose a threat to existing ecosystems.

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

Application of 105-83-9, 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.105-83-9, Name is N1-(3-Aminopropyl)-N1-methylpropane-1,3-diamine, molecular formula is C7H19N3. In a article，once mentioned of 105-83-9

The present invention relates to novel thioquinazolinone derivative compounds and combinatorial libraries of the following formula: 1wherein R1 to R4, x and y have the meanings provided herein.

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