Month: March 2021

#REF!

Nontoxic corrosion inhibitors for copper in sulphuric acid

The aim of this paper is to study influence of the molecular structure on the inhibiting properties of organic compounds in corrosion processes in acid media. The inhibiting efficiency of nontoxic imidazole derivatives on copper corrosion in sulphuric acid is investigated. The investigation is performed using electrochemical methods of potentiodynamic polarization as well as gravimetric measurements. The results of the investigation show that the inhibiting properties of substituted imidazoles depend on molecular structure. The best protection (93%) is obtained by adding a phenyl ring to the imidazole structure. The values of standard free energies of adsorption, as calculated from the Freundlich isotherm, indicate that in the presence of sulphuric acid imidazole derivatives adsorb on copper by a physisorption-based mechanism.

If you are hungry for even more, make sure to check my other article about 25676-75-9, SDS of cas: 25676-75-9.

Synthetic Route of 152628-02-9, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 152628-02-9, Name is 1,7′-Dimethyl-2′-propyl-1H,1’H-2,5′-bibenzo[d]imidazole, SMILES is C(CC)C1=NC2=C([NH]1)C(=CC(=C2)C3=NC4=C([N]3C)C=CC=C4)C, belongs to imidazoles-derivatives compound. In a article, author is PEDERSEN, M, introduce new discover of the category.

FORMATION AND ANTIMYCOTIC EFFECT OF CYCLODEXTRIN INCLUSION COMPLEXES OF ECONAZOLE AND MICONAZOLE

The stability constants between beta-cyclodextrin (beta-CD) and the two antimycotic imidazole derivatives, miconazole and econazole were measured. Increased ionization of the imidazole derivatives decreased the size of the stability constants. The same phenomenon was observed for miconazole and hydroxypropyl-beta-cyclodextrin. In addition, the type of solubility diagram obtained was dependent on the degree of ionization of the imidazole derivatives. A type Bs solubility diagram was obtained for econazole and beta-CD in buffer solution, pH 7.1. An econazole beta-CD complex with a molar ratio of 1:1 was isolated. In a fluid medium the antimycotic effect of the econazole beta-CD complex against a strain of Candida albicans was superior to the effect of a physical mixture of the two compounds. A small inhibitory effect of beta-CD on the growth of the test organism was observed.

Synthetic Route of 152628-02-9, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 152628-02-9.

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. 1072-62-4, Name is 2-Ethyl-1H-imidazole, molecular formula is C5H8N2. In an article, author is Ruan, Yi-tong,once mentioned of 1072-62-4, COA of Formula: C5H8N2.

Preparation of Imidazole Derivatives via Bisfunctionalization of Alkynes Catalyzed by Ruthenium Carbonyl

A one-step, oxidative bisfunctionalization of alkynes to generate cis-enediol diacetates catalyzed by ruthenium carbonyl (triruthenium dodecacarbonyl) is presented. The reaction was performed using the alkyne, (diacetoxyiodo) benzene, Ru-3(CO)(12) as the catalyst, and toluene as the solvent at 100 degrees C to give the cis-enediol diacetates in up to 82% yields. This method overcomes the shortcomings of existing methods, such as tedious reaction steps, substrate limitations, and the use of toxic reagents. Furthermore, the reaction of module cis-enediol diacetates with ammonium carbonate [(NH4)(2)CO3] in an alcohol solvent gave imidazole derivatives in 37-84% yields, thus providing a simple and mild new method for the synthesis of imidazole compounds.

Interested yet? Keep reading other articles of 1072-62-4, you can contact me at any time and look forward to more communication. COA of Formula: C5H8N2.

Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics, Product Details of 60-56-0, 60-56-0, Name is 1-Methyl-1H-imidazole-2(3H)-thione, SMILES is S=C1NC=CN1C, belongs to imidazoles-derivatives compound. In a document, author is Bereket, G., introduce the new discover.

Determination of inhibition effects of various imidazole derivatives on copper corrosion in 0.1M HCl media

In the present study the inhibitive behaviour of 1H-imidazole, 1-methyl imidazole, imidazolidin-2-one, 4-(imidazole-1-yl) acetophenone, 4-(imidazole-1-yl) phenol and L-hystidine on the corrosion of copper in 0 center dot 1 M HCl has been investigated by potentiodynamic polarisation and polarisation resistance techniques. Except for 2-imidazolidone, the tested imidazole derivatives were found to behave as cathodic inhibitors. 1-methyl imidazole, 4-(imidazole-1-yl) acetophenone, 4-(imidazole-1-yl) phenol and L-hystidine were adsorbed on copper surface according to Temkin isotherm model. By using semi-empirical quantum chemical methods, physical parameters such as charge on the heteroatoms of imidazole derivatives q(n), energies of highest occupied molecular orbital ( HOMO) and lowest unoccupied molecular orbital (LUMO) and dipole moments were calculated. Possible correlations between these calculated physical parameters and inhibitor efficiencies were considered. Finally, the mechanistic information relating to the inhibition process was elucidated.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 60-56-0. Product Details of 60-56-0.

Related Products of 16079-88-2, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 16079-88-2, Name is 1-Bromo-3-chloro-5,5-dimethylimidazolidine-2,4-dione, SMILES is O=C1N(Cl)C(C(C)(C)N1Br)=O, belongs to imidazoles-derivatives compound. In a article, author is Ramkumar, Sowmya, introduce new discover of the category.

Enhanced corrosion resistance of mild steel in sulphuric acid medium by imidazole derivative: Experimental and computational studies

The inhibition action of the imidazole derivative on the corrosion of mild steel in 0.5 M Sulphuric acid was investigated by weight loss, polarization, Impedance and SEM. The PZC of mild steel was studied by AC impedance method. The polarization experiment revealed that IDZ is of mixed-type but slightly anodic control. Weight loss results obtained revealed that the imidazoline derivatives performed excellently as corrosion inhibitor with efficiency above 70% at 20ppm at 303 K. The optimum period of inhibition for IDZ was determined by weight loss studies. Its adsorption on mild steel obeys Tempkin isotherm. Quantum chemical parameters and Mulliken charge densities on the optimized structure of imidazoline derivative were calculated using GAUSSIAN 09 with B3LYP / 6-31G (d,p) basis set. (C) 2019 Elsevier Ltd. All rights reserved.

Related Products of 16079-88-2, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 16079-88-2.

Related Products of 641571-11-1, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 641571-11-1, Name is 3-(4-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)aniline, SMILES is CC1=C[N](C=N1)C2=CC(=CC(=C2)N)C(F)(F)F, belongs to imidazoles-derivatives compound. In a article, author is EFIMENKO, IA, introduce new discover of the category.

SYNTHESIS AND STRUCTURE OF PALLADIUM(II) MIXED COMPLEXES WITH DNA PURINE OR PYRIMIDINE-BASES AND IMIDAZOLE DERIVATIVES .1.

Palladium(II) mixed ligand complexes with purine or pyrimidine and imidazole derivatives were prepared and characterized by i.r., Raman and electronic spectroscopy. The compounds have the general formula [Pd(L(1))(L(2))X(2))]; where L(1)=adenine, guanine, hypoxanthine, cytosine, 2-aminopyrimidine, 4(6)-hydroxypyrimidine; L(2) = N-methylimidazole, N-ethylimidazole or N-propylimidazole; X = Cl or Br. The complexes are square planar with cis-halogens. The purine, pyrimidine and imidazole bases act as monodentate ligands coordinated via the N(7) of purine and N(3) of pyrimidine and imidazole.

Related Products of 641571-11-1, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 641571-11-1.

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Product Details of 693-98-1, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 693-98-1, Name is 2-Methyl-1H-imidazole, molecular formula is C4H6N2. In an article, author is STUPNISEKLISAC, E,once mentioned of 693-98-1.

IMIDAZOLE DERIVATIVES AS CORROSION-INHIBITORS FOR ZINC IN HYDROCHLORIC-ACID

The efficiency of various imidazole derivatives as zinc corrosion inhibitors in hydrochloric acid (HCl) was investigated using electrochemical and gravimetric methods. A difference in efficiency (z) was observed with the introduction of different substituents into a imidazole skeleton. It was established that substituents which increased the electron density at the reaction center improved the corrosion inhibiting properties of the heterocyclic compound. A linear correlation between reaction kinetic data and the sum of the polar substituent constants was obtained.

If you¡¯re interested in learning more about 693-98-1. The above is the message from the blog manager. Product Details of 693-98-1.

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 1072-62-4, Name is 2-Ethyl-1H-imidazole, SMILES is CCC1=NC=CN1, in an article , author is Jayachandran, JP, once mentioned of 1072-62-4, Product Details of 1072-62-4.

N-alkylation of 2,4,5-triphenyl imidazole derivatives using a new phase transfer reagent under PTC conditions

The phase transfer catalyzed N-alkylation of 2,4,5-triphenyl imidazole derivatives using a new phase transfer reagent namely, 2-benzilidine-N,N,N,N’,N’,N’-hexaethyl propane-1,3-diammonium dibromide have been described. The structures of all the 14 compounds have been established by spectroscopic means.

Interested yet? Read on for other articles about 1072-62-4, you can contact me at any time and look forward to more communication. Product Details of 1072-62-4.

Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics, Name: Diethyl 2-propyl-1H-imidazole-4,5-dicarboxylate, 144689-94-1, Name is Diethyl 2-propyl-1H-imidazole-4,5-dicarboxylate, SMILES is O=C(C1=C(C(OCC)=O)NC(CCC)=N1)OCC, belongs to imidazoles-derivatives compound. In a document, author is Haddadzadeh, Elham, introduce the new discover.

One-pot Synthesize of Phenyl Phenanthro Imidazole Derivatives Catalyzed by Lewis Acid in the Presence of Ammonium Acetate

Tri substituted imidazole derivatives were synthesized with the combinations of phenanthroquinone, benzealdehyde derivatives at the presence of ammonium acetate that catalyzed by Lewis acid. In all reactions, polar solvent was used and the reactions were carried out under the reflux conditions. The structure of all compounds was confirmed using the IR and (HNMR)-H-1. This method revealed several advantages including, excellent yields, simplicity of operation and easy separation. The results showed that, products formed in high yields and low reaction times. Also, the metal atom of Lewis acid catalyst increased the reactivity of substrate and the reaction time. Copyright (C) 2020 by SPC (Sami Publishing Company)

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 144689-94-1 is helpful to your research. Name: Diethyl 2-propyl-1H-imidazole-4,5-dicarboxylate.

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 820959-17-9, Name is Ac-Beta-Ala-His-Ser-His-OH, molecular formula is C20H28N8O7. In an article, author is GRECH, E,once mentioned of 820959-17-9, Recommanded Product: 820959-17-9.

COUPLING OF NU(NH…N) VIBRATIONS WITH THE GAMMA(NH…N) OVERTONE IN SOLID IMIDAZOLE DERIVATIVES

The IR spectra of a number of imidazole derivatives were studied in the solid state at room and liquid nitrogen temperatures. The bands ascribed to stretching and out-of-plane deformation vibrations of NH groups involved in strong NH…N hydrogen bonds were analysed. The energy of this bond reflected in the position of the nu(NH…N) band changes over a broad range so that it was possible to investigate band shaping due to the overlap with the overtone band of the gamma(NH…N) mode. The correlation between the gamma(NH…N) and nu(NH…) frequencies shows that the gamma(NH…N) value for strong NH…N bridges only slightly depends on nu(NH…N).

If you¡¯re interested in learning more about 820959-17-9. The above is the message from the blog manager. Recommanded Product: 820959-17-9.