McDonagh A F,Phimister A,Boiadjier S E, et al.Dissociation constants of carboxylic acids by 13C-NMR in DMSO/water. Tetrahedron Letters . 1999A F McDonagh,A Phimister,S E Boiadjier. Dissociation constants of carboxylic acids by C-13-NMR in DMSO/water[J].Tetrahedron Letters,1998,(49):...
We took the NMR using deuterated H20, and the water peak at around 4.7 ppm drowns out the rest of the NMR. We have tried dissolving the compounds in typical organic solvents. However, all the solvents and even DMSO is not dissolving the compounds.1. Is there anyway I can take an NMR ...
The results of the 13C NMR-analysis of the liquid phase also supported this hypothesis, with a shift from chemical reaction products in the solution towards physically dissolved CO2 at higher temperatures [12]. As DMSO is a highly hygroscopic solvent it is very likely that water will be ...
e Plot of \(\bar \nu_{{\mathrm{C}} \equiv {\mathrm{N}}}\) in DMSO–water binary mixture against water volume ratio Full size image Linear Stark effect in which the frequency shift (\({\mathrm{\Delta }}\bar \nu\)) changes linearly with exerted electric field \(\vec {\mathbf{F...
NMR 1H-shielding constants of hydrogen-bond donor reflect manifestation of the Pauli principle. J. Phys. Chem. Lett. 9, 3720–3724 (2018). Article CAS PubMed PubMed Central Google Scholar Rohlfing, C. M. M., Allen, L. C. & Ditchfield, R. Proton chemical shift tensors in hydrogen‐...
Water binding and irreversible dehydration processes in cellulose acetate membranes The relative amounts of freezing and nonfreezing water in various water-wet cellulose acetate (CA) membranes were determined by NMR techniques, from the initial heights of the water component in the free induction decay...
1H, 13C, and 19F NMR Studies on Molecular Interactions of CO2 with β-Diketones and UO2(β-diketonato)2DMSO Complexes in Supercritical CO2 The relationship between solubility of β-diketones and uranyl β-diketonato complexes (UO2(β-diketonato)2DMSO) in supercritical carbon dioxide (scCO2)...
NMR, UVvis, and XRD results prove that they are able to reach very high conjugation lengths and ordered conformations, not only in the solid state but also in solutions of good solvents. 展开 关键词: nanocomposites DOI: 10.1021/ma800221v 被引量: 23 ...
For NMR spectra analysis, samples were prepared by dissolving in CDCl3. Instruments and sample characterization The sheet resistance (R S ) was measured with a four-point probe system, which was used to calculate the electrical conductivity (σ) with the equation σ = 1/(R S × ...
In addition, the UV–visible absorption spectra was computed in the present work. The nuclear magnetic resonance (NMR) spectra of carbon 13C and hydrogen 1H in 1EPBH have been recorded and analyzed. Finally, to investigate the biological activity of the 1EPBH compound, the interaction of the...