Category: 14098-44-3

Electric Literature of 14098-44-3, 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. 14098-44-3, C14H20O5. A document type is Article, introducing its new discovery.

Crown ethers were reacted with HN-proton-donor molecules to obtain crystalline molecular host-guest complexes. It was found that complexes with crown ethers of different structure are formed, depending on the linear dimensions and mode of steric shielding of active centers of the proton-donor molecules. 2004 MAIK “Nauka/Interperiodica”.

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Reference of 14098-44-3, Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.14098-44-3, Name is Benzo-15-crown-5, molecular formula is C14H20O5. In a patent, introducing its new discovery.

Reaction of Nicl2·6H2o and Na2[mnt] (mnt = maleonitriledithiolate) in Ch3oh at room temperature leads to Ni(ii) dithiolato complex [ni(mnt)2]2-. An oxidation process of [Ni(mnt)2]2- affords [{Ni(mnt)2}2]2- and yields solid crystalline product [Na2(benzo-15-Crown-5)3(H2O)2][{Ni(mnt)2}2] (1) in the presence of benzo-15-crown-5. X-ray diffraction analyses revealed that in solid state the dianions of 1 pack as columns and the counter ions are discrete disodium triple-decker dications. A non-linear absorption coefficient beta of 2.4 cm GW-1 was recorded at 1064 nm for 1 in acetonitrile solution with a concentration of 1.0 x 10-4 mol 1-1. (C) 2000 Elsevier Sciences S.A.

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The intercalation of lithium from solution into the six-membered mu2-oxo rings on the basal planes of gibbsite is well-constrained chemically. The product is a lithiated layered-double hydroxide solid that forms via in situ phase change. The reaction has well established kinetics and is associated with a distinct swelling of the gibbsite as counter ions enter the interlayer to balance the charge of lithiation. Lithium reacts to fill a fixed and well identifiable crystallographic site and has no solvation waters. Our lithium-isotope data shows that 6Li is favored during this intercalation and that the solid-solution fractionation depends on temperature, electrolyte concentration and counter ion identity (whether Cl-, NO3- or ClO4-). We find that the amount of isotopic fractionation between solid and solution (deltaLisolid-solution) varies with the amount of lithium taken up into the gibbsite structure, which itself depends upon the extent of conversion and also varies with electrolyte concentration and in the counter ion in the order: ClO4-Related Products of 14098-44-3

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The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.14098-44-3, Name is Benzo-15-crown-5, molecular formula is C14H20O5. In a Article，once mentioned of 14098-44-3, Application In Synthesis of Benzo-15-crown-5

The reactivity of terminal uranium(V/VI) nitrides with CE2(E=O, S) is presented. Well-defined C=E cleavage followed by zero-, one-, and two-electron redox events is observed. The uranium(V) nitride [U(TrenTIPS)(N)][K(B15C5)2] (1, TrenTIPS=N(CH2CH2NSiiPr3)3; B15C5=benzo-15-crown-5) reacts with CO2to give [U(TrenTIPS)(O)(NCO)][K(B15C5)2] (3), whereas the uranium(VI) nitride [U(TrenTIPS)(N)] (2) reacts with CO2to give isolable [U(TrenTIPS)(O)(NCO)] (4); complex 4 rapidly decomposes to known [U(TrenTIPS)(O)] (5) with concomitant formation of N2and CO proposed, with the latter trapped as a vanadocene adduct. In contrast, 1 reacts with CS2to give [U(TrenTIPS)(kappa2-CS3)][K(B15C5)2] (6), 2, and [K(B15C5)2][NCS] (7), whereas 2 reacts with CS2to give [U(TrenTIPS)(NCS)] (8) and ?S?, with the latter trapped as Ph3PS. Calculated reaction profiles reveal outer-sphere reactivity for uranium(V) but inner-sphere mechanisms for uranium(VI); despite the wide divergence of products the initial activation of CE2follows mechanistically related pathways, providing insight into the factors of uranium oxidation state, chalcogen, and NCE groups that govern the subsequent divergent redox reactions that include common one-electron reactions and a less-common two-electron redox event. Caution, we suggest, is warranted when utilising CS2as a reactivity surrogate for CO2.

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(X = Cl, Br) and have been prepared by reactions of X2V(N3S2) with sodium fluoride in acetonitrile suspensions in the presence of 15-crown-5 and benzo-15-crown-5, respectively.The 15-N-labeled complex was also prepared and characterized by 15N, 19F, and 51V NMR spectra, as well as by IR spectroscopy.Whereas the crystal structure of , owing to disorder of the crown ether molecule, could be refined only to an R-value of 0.16 (space group C2/m, Z = 4, a = 1995.4(11); b = 1016.2(6); c = 1047.2(8) pm; beta = 100.83(4) deg at -65 deg C), the crystal structure of the corresponding was determined without complications.Space group P21/c, Z = 4, 5565 observed independent reflexion.R = 0.036.Lattic dimensions at 20 deg C; a = 1198.9(6); b = 970.3(5); c = 1918.2(10) pm; beta = 93.74(3) deg.The compound forms ion pairs, in which the sodium atom is seven-coordinated by the oxygen atoms of the crown ether molecule, the fluorine atom and one chlorine atom of the trigonal-bipyramidal – unit.The vanadium atom is part of a planar VN3S2 ring; fluorine and two nitrogen atoms of the cyclothiazeno ring occupy the equatorial positions. – Keywords: Fluoro-Chloro-Cyclothiazeno Complexes of Vanadium, 15N NMR Spectra; 51V NMR Spectra, IR Spectra, Crystal Structure

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application In Synthesis of Benzo-15-crown-5. In my other articles, you can also check out more blogs about 14098-44-3

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Benzo-15-crown-5 (B15C5) extracted alkali metal picrates (MA) into benzene by forming M(B15C5)A or M(B15C5)//2A complexes and moreover, in the presence of tributyl phosphate (B), B15C5 extracted rubidium and cesium picrates by forming M(B15C5)BA complexes. The extractability sequences of the M(B15C5)A, MM(B15C5)//2A, and M(B15C5)BA complexes are Na** plus greater than K** plus greater than Rb** plus greater than Li** plus greater than Cs** plus , K** plus greater than Rb** plus greater than Cs** plus , and Rb** plus greater than Cs** plus respectively. The extraction equilibrium constants for these complexes have been determined at 25 degree C, and the synergistic formation constants of the M(B15C5)//2A and M(B15C5)BA complexes in the benzene solution have been calculated. The synergistic effects for the alkali metal ions for the B15C5 system were compared with those for the 15C5 system.

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Application of 14098-44-3. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 14098-44-3, Name is Benzo-15-crown-5

In the presence of optimum amount of water, the copper(II) ion and 15-crown-5 (15C5) derivatives gave the dihydrated complex in boron trifluoride-diethyl ether (BF3-ether).Based on optical and ESR spectrometric titrations, we found that the crown ether captures the copper(II) ion in the equivalent metal/ligand molar ratio.The d-d band absorption of the complexes were detected in the near-infrared region.The complexes revealed the characteristic ESR g-anisotropies (gzApplication of 14098-44-3

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In an article, published in an article, once mentioned the application of 14098-44-3, Name is Benzo-15-crown-5,molecular formula is C14H20O5, is a conventional compound. this article was the specific content is as follows.COA of Formula: C14H20O5

The synthesis and binding investigation of novel crown-ether derivatives of phenanthro[4,5-abc]phenazine and quinoxalino[2?,3?:9,10] phenanthro[4,5-abc]phenazine sensors are reported. The binding studies of these sensors with an array of alkali and alkaline-earth metals are exploited using UV-vis, fluorescence and nuclear magnetic resonance spectroscopies. 2013

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The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.14098-44-3, Name is Benzo-15-crown-5, molecular formula is C14H20O5. In a Article，once mentioned of 14098-44-3, Recommanded Product: Benzo-15-crown-5

Synthesis of symmetric diarylamines via a twofold intermolecular electrophilic C-H functionalization of electron-rich arenes by umpolung-activated nitroalkane in polyphosphoric acid is demonstrated.

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Application of 14098-44-3. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 14098-44-3, Name is Benzo-15-crown-5. In a document type is Article, introducing its new discovery.

Novel 15-hydroxybenzomonothia-15-crown-5 containing the sulfur atom linked with the benzene ring and its S-oxide were synthesized. The stability constants for the complexes of the obtained benzocrown ethers and a reference 15-hydroxybenzo-15-crown-5 with Na, Ca, AgI, Cd, HgII, and PbII perchlorates were determined by 1H NMR titration. In MeCN-d3, the benzothiacrown ether demonstrates a high selectivity towards the thio- and oxothiophilic Hg2+ (logK 1 = 7.1) and Pb2+ ions (logK 1 = 7.4). In MeCN-d3-D 2O mixtures, the stabilities of the most of complexes decrease sharply due to competitive hydration of the metal cations except for the “soft” Ag+ and Hg2+ ions having low affinity for the “hard” oxygen atoms and, on the contrary, very high affinity for the “soft” SII atoms. This results in the change in selectivity of complexation: at the water content in solution of 20%, the benzothiacrown ether binds preferably the Hg2+ (logK 1 = 5.0) and Ag+ ions (logK 1 = 2.7). In MeCN-d3, the benzothiacrown-derived sulfoxide is a weak and non-selective complexing agent towards all the metal cations under study; the reference 15-hydroxybenzo-15-crown-5 forms more stable complexes with the oxophilic sodium, calcium, and lead(ii) cations. The conformational features of the benzocrown ethers and their metal complexes established by NMR spectroscopy and X-ray diffraction are discussed. The found characteristics of the complexing ability of benzomonothia-15-crown-5 where the sulfur atom is in conjugation with the benzene ring reveal that the macrocyclic ligands with such a structure are promising as high-selective and efficient complexing agents for the “soft” mercury(ii) and silver(i) cations in acetonitrile-water mixtures.

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