Category: 94-91-7

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 94-91-7, C17H18N2O2. A document type is Article, introducing its new discovery., Application In Synthesis of N,N’-Bis(salicylidene)-1,2-propanediamine

A series of low-spin ruthenium(III) complexes of the type [RuX(EPh3)(LL’)] (X = Cl, Br; E = P, As; LL’ = Salen, Salpn and Saldien) have been synthesised by reacting [RuCl3(PPh3)3], [RuCl3(AsPh3)3], [RuBr3(AsPh3)3] or [RuBr3(PPh3)2(MeOH)] with tetradentate Schiff bases such as bis(salicylaldehyde)ethylenediimine (H2-Salen), bis(salicylaldehyde)propylenediimine (H2-Salpn) and bis(salicylaldehyde)diethylenetriimine (H2-Saldien). All complexes have been characterized by elemental analyses, IR and electronic spectra, EPR, magnetic moment and cyclic voltammetric data.

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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine, molecular formula is C17H18N2O2. In a Article，once mentioned of 94-91-7, Application In Synthesis of N,N’-Bis(salicylidene)-1,2-propanediamine

The composition and structure of the mononuclear Pt(II) complexes with N,N?-bis(salicylidene)-ethylenediamine (salen) and polymers on its basis were studied by X-ray photoelectron spectroscopy. The Pt(salen) polymer contains platinum in two oxidation states Pt(II) and Pt(IV), and the atomic Pt(II)/Pt(IV) ratio depends on the conditions of the electrochemical synthesis. The presence of platinum in different oxidation states previews the exchange character of the bonds between metal centers and the reversibility of the reaction 2Pt(III) ? Pt(II) + Pt(IV). The supporting electrolyte – tetrabuthylammonium perchlorate (Bu4NClO4) – stabilizes the electrically excited complex [Pt(III)(salen)]-. This complex, formed as a result of electron transfer from Pt(II) onto the ligand, is the central component of the processes taking place upon the synthesis of Pt(salen) polymers and determines their unique photochemical properties. A redox reaction mechanism in the electrode-polymer-electrolytic medium system with the initial mononuclear complex is suggested.

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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine, molecular formula is C17H18N2O2. In a Article，once mentioned of 94-91-7, category: chiral-catalyst

Six boron compounds have been synthesized through the combination of phenylboronic acid and various Salen (N,N?-ethylenebis(2-hydroxy)benzylidenimine) ligands. They contain seven- and eight-membered heterocycles with a bridging oxygen and have the formula: L[(PhB)2(mu-O)] (L= Acmen (1), Salen(tBu) (2), Sal(2-OH)pen (3), Salpen(tBu) (4), Acpen (5) and L[B2(mu-O)(O2BPh)] (L = Acen (6), Salmen (7)). Compounds 6 and 7 are interesting trinuclear boron derivatives with two four-coordinate and one three-coordinate boron atoms. The compounds have been characterized by MP, MS, IR, EA and 1H- and 11B-NMR, by 11B-MAS for 6 and 7 and by X-ray crystallography for 2, 4-7.

The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 94-91-7 is helpful to your research., category: chiral-catalyst

Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

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. 94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine, molecular formula is C17H18N2O2. In a Article，once mentioned of 94-91-7, Quality Control of: N,N’-Bis(salicylidene)-1,2-propanediamine

Four new heterodinuclear complexes of a group of the general formula, [NiHg(L)Cl2] where the Schiff base anion, L = 2,2?-[propane-1, 2-diylbis(nitrilomethylylidene)] diphenolate (L1), (1); 2,2?-[propane-1,2-diylbis(nitriloeth-1-yl-1-ylidene)] diphenolate (L 2), (2); 2,2?-[propane-1,2-diylbis(nitriloprop-1-yl-1-ylidene)] diphenolate (L3), (3) and 2,2?-[propane-1,3- diylbis(nitrilomethylylidene)] diphenolate (L4), (4) have been prepared. The syntheses have been achieved by reacting equimolar amounts of nickel perchlorate, mercuric chloride and the respective tetradentate Schiff base ligand (H2L) in methanol medium. The complexes have been characterized by microanalytical, spectroscopic, single crystal X-ray diffraction and other physicochemical studies. Structural studies on 1-4 reveal the presence of a heterodinuclear [NiIIHgII] unit in which the central Ni(II) and Hg(II) ions are connected to each other by two phenolate oxygen bridges. In each of the complexes, the Ni(II) ion adopts a distorted square planar (NiO2N2) geometry while the Hg(II) ion assumes a distorted tetrahedral arrangement (HgO2Cl2). The dinuclear units in 1-4 are self-assembled through weak intermolecular pi… interactions to build up supramolecular network in their solid state.

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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

Reference of 94-91-7. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine. In a document type is Article, introducing its new discovery.

Treatment of [RuCl2(PPh3)3] with two equiv. bi-dentate Schiff base N,O-LH-Cl (N,O-LH-Cl = 2[(3-chloro-phenylimino)-methyl]-phenol) or N,O-LH-NO2 (N,O-LH-NO2 = 2[(4-nitro-phenylimino)-methyl]-phenol) in the presence of triethylamine afforded cis-[RuCl(PPh3)(kappa2-N,O-L-Cl)2] (1) and trans-[RuCl(PPh3)(kappa2-N,O-L-NO2)2]·Et2O (2), respectively. Reactions of [RuCl2(PPh3)3] and equal equiv. tetra-dentate Schiff bases gave corresponding ruthenium(III) complexes [RuCl(PPh3)(salen)] (3) (H2salen = N,N?-disalicylidene-1,2-ethanediamine), [RuCl(PPh3)(salipn)]·2CH2Cl2 (4) (H2salipn = N,N?-disalicylidene-1,2-(1-methyl)ethanediamine), [RuCl(PPh3)(salpn)]·CH2Cl2 (5) (H2salpn = N,N?-disalicylidene-1,2-propanediamine), [RuCl(PPh3)(salphen)]·CH2Cl2 (6) (H2salphen = N,N?-disalicylidene-1,2-phenyldiamine), [RuCl(PPh3)(saltoln)]·CH2Cl2 (7) (H2saltoln = N,N?-disalicylidene-1,2-tolyldiamine) and [RuCl(PPh3)(salcyn)] (8) (H2salcyn = N,N?-disalicylidene-(R,R)-1,2-cyclohexanediamine). The molecular structures of complexes 1?5 and 7 have been determined by single-crystal X-ray crystallography. The catalytic oxidation properties of ruthenium(III) complexes 1?8 were tested towards alcohols in the presence of N-methylmorpholine-N-oxide.

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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

In an article, published in an article, once mentioned the application of 94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine,molecular formula is C17H18N2O2, is a conventional compound. this article was the specific content is as follows.Recommanded Product: 94-91-7

The peroxo complexes of niobium have been synthesised and characterised.The complexes fail to oxidise alcohols and olefins stoichiometrically.However, they act as active catalysts in presence of t-butyl hydroperoxide (TBHP), resulting in the formation of oxidation products.Competitive epoxidation of cycloolefins does not suggest coordination of olefins to metal ions.

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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

In an article, published in an article, once mentioned the application of 94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine,molecular formula is C17H18N2O2, is a conventional compound. this article was the specific content is as follows.SDS of cas: 94-91-7

Some tetradentate salen type Schiff bases and their uranyl complexes were synthesized and characterized by UV-Vis, NMR, IR, TG, C.H.N. and X-ray crystallographic studies. From these investigations it is confirmed that a solvent molecule occupied the fifth position of the equatorial plane of the distorted pentagonal bipyramidal structure. Also, the kinetics of complex decomposition by using thermo gravimetric methods (TG) was studied. The thermal decomposition reactions are first order for the studied complexes. To examine the properties of uranyl complexes according to the substitutional groups, we have carried out the electrochemical studies. The electrochemical reactions of uranyl Schiff base complexes in acetonitrile were reversible.

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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine, molecular formula is C17H18N2O2. In a Article，once mentioned of 94-91-7, COA of Formula: C17H18N2O2

Ten copper(II) complexes of tetradentate Schiff bases obtained by condensing two moles of an o-hydroxyphenylcarbonyl compound with a diamine have been prepared and characterized by elemental analyses, melting points, IR and electronic spectra. The IR and electronic spectra of the free ligand and the complexes are compared and discussed. The deconvolution of the visible spectra of the complexes in CHCl3, approximately C2v or C1, yielded four peaks at ca. 15000, 17000, 18000-19000, and 20000-22000 cm-1, assigned to the four d-d transitions.

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Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 94-91-7, C17H18N2O2. A document type is Article, introducing its new discovery., Computed Properties of C17H18N2O2

The reaction of trans-[Fe(Salpn 1,2)(OH2)2]+ (Salpn 1,2 = N,N’-propylene 1,2 -bis-salicylidiniminate) with SIV has been studied at 20.0 ? t/C ?35.0, 0.01 < [sIV]T/mol dm-3 < 0.10 (I= 0.3 mol dm-3) in aqueous acetate buffer medium of varying pH (= 3.80 - 5.20). The stopped flow and rapid scan spectrophotometric measurements indicate the formation of monosulphito complex, trans-[Fe(Salpn 1,2)(OH2)(SO3)]. The trans- diaqua complex reacts with HSO3- ?10 times slower than its (hydroxo aqua) analogue thus displaying the labilising effect of the coordinated hydroxo group. The limiting dissociative mechanism (D) appears to be applicable for the aqua ligand substitution of the aqua-hydroxo complex, trans[Fe(Salpn 1,2)(OH2)(OH)]. The trans-[Fe((Salpn 1,2)(OH2)(SO3)]- undergoes redox reaction yielding FeII, SO42- and S2O62-; kobs = k1 red + k2 red [HSO3-] + k3 red [H+][HSO3-] is obeyed with k1 red = (0.64 ± 0.40) x 10-4 s-1, k2 red = (1.8 ± 0.9) x 10-4 dm3 mol-1s-1 and k2 red = (1.4 ± 0.1) x 102 dm6 mol-2 s-1 30.0C (I= 0.3 mol dm-3). The electron transfer is innersphere type for the uncatalysed path (k1 red) while the exact mechanism for the HSO3- and (H+ + HSO3-) dependent paths remains equivocal. Interested yet? Keep reading other articles of 94-91-7!, Computed Properties of C17H18N2O2

Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare

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. 94-91-7, Name is N,N’-Bis(salicylidene)-1,2-propanediamine, molecular formula is C17H18N2O2. In a Article£¬once mentioned of 94-91-7, Recommanded Product: N,N’-Bis(salicylidene)-1,2-propanediamine

The studies described herein focus on the 1,3-dipolar cycloaddition reaction between first-row transition metal-azide complexes and alkyne reagents, i.e. an inorganic variant of the extensively used “click reaction”. The reaction between the azide complexes of biologically-relevant metals (e.g., Fe, Co and Ni) found in metalloenzyme active sites and alkyne reagents has been investigated as a proof-of-principle for a novel method of developing metalloenzyme triazole-based inhibitors. Six Fe, Co and Ni mono-azide complexes employing salen- and cyclam-type ligands have been synthesized and characterized. The scope of the targeted inorganic azide-alkyne click reaction was investigated using the electron-deficient alkyne dimethyl acetylenedicarboxylate. Of the six metal-azide complexes tested, the Co and Ni complexes of the 1,4,8,11-tetrametyl-1,4,8,11-tetraazacyclotetradecane (Me 4cyclam) ligand showed a successful cycloaddition reaction and formation of the corresponding metal-triazolate products, which were crystallographically characterized. Moreover, use of less electron deficient alkynes resulted in a loss of cycloaddition reactivity. Analysis of the structural parameters of the investigated metal-azide complexes suggests that a more symmetric structure and charge distribution within the azide moiety is needed for the formation of a metal-triazolate product. Overall, these results suggest that a successful cycloaddition reaction between a metal-azide complex and an alkyne substrate is dependent both on the ligand and metal oxidation state, that determine the electronic properties of the bound azide, as well as the electron deficient nature of the alkyne employed.

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Reference£º
Chiral Catalysts,
Chiral catalysts – SlideShare