Kinetics Nuclear magnetic resonance

Sheinblatt, M. (1970) Determination of an acidity scale for peptide hydrogens from nuclear magnetic resonance kinetic studies. J Am Chem Soc, 92 (8), 2505-2509. 

The following data were obtained during a kinetic study of the hydration of p-methoxyphenylacetylene by measuring the relative amounts of reactants and products by nuclear magnetic resonance (NMR). ... 

To illustrate the utility of the MWBD method, a series of commercial polyvinyl acetates and low density polyethylenes are analyzed. Either kinetic models or 13c nuclear magnetic resonance results are used to estimate the branching structural parameter. 

C. A. Fyfe, M. Cocivera, S. W. H. Damji 1975, (High resolution nuclear magnetic resonance studies of chemical reactions using flowing liquids. Investigation of the kinetic and thermodynamic intermediates formed by the attack of meth-oxide ion on l-X-3,5-dinitrobenzenes), J. Am. Chem. Soc. 97, 5707. 

Crosslinked polymer networks formed from multifunctional acrylates are completely insoluble. Consequently, solid-state nuclear magnetic resonance (NMR) spectroscopy becomes an attractive method to determine the degree of crosslinking of such polymers (1-4). Solid-state NMR spectroscopy has been used to study the homopolymerization kinetics of various diacrylates and to distinguish between constrained and unconstrained, or unreacted double bonds in polymers (5,6). Solid-state NMR techniques can also be used to determine the domain sizes of different polymer phases and to determine the presence of microgels within a poly multiacrylate sample (7). The results of solid-state NMR experiments have also been correlated to dynamic mechanical analysis measurements of the glass transition (1,8,9) of various polydiacrylates. 

Nuclear magnetic resonance (NMR) experiments are used to study the exchange kinetics of chemical systems in equilibrium.28,68,69 As is the case for fluorescence correlation spectroscopy no perturbation of the chemical system in equilibrium is required to obtain kinetic information from NMR experiments. However, NMR is not very sensitive to concentration changes. 

Nuclear magnetic resonance (NMR) is a widely utilized technique, which detects the reorientation of nuclear spins in a magnetic field. It can potentially be used to determine the 3-D structure of the protein itself, as well as supplying information on kinetics and dynamics, ligand binding, determination of pK- values of individual amino acid residues, on electronic structure and magnetic properties, to mention only some of the applications. In addition, it can be selectively applied to specific nuclei—1H, 13C, 15N, 19F (often substituted for H as a... 

The substance like 1H, 14N, 19F, 13C, 170,31P contain nuclei with a spin and thus exhibit nuclear magnetic resonance (NMR) like ESR. In NMR also the shapes of line or signal are used for obtaining the information on kinetics of the reaction. 

D. B. Boyd, Substituent Effects in Cephalosporins as Assessed by Molecular Orbital Calculations, Nuclear Magnetic Resonance, and Kinetics , J. Med. Chem. 1983, 26, 1010-1013. 

T. Yamana, A. Tsuiji, Y. Itatani, Kinetic Study on Epimerization and Hydrolysis of Het-acillin Use of Nuclear Magnetic Resonance Spectroscopy , J. Antibiot. 1975, 28, 242-243. 

Crabtree and coworkers proposed a catalytic cycle for the reaction outUned in Equation 6.10. The mechanism is based on labeling and kinetic studies, and is outlined in Scheme 6.4 [25]. Adduct 36 was observed in nuclear magnetic resonance (NMR) spectra and appears to be a catalyst resting state. It should be noted that there is no change in the oxidation state of Ir, and that the key step is thought... 

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