Chemical shifts nuclear magnetic resonance

Given their radio-frequency electrical properties and nuclear magnetic resonance chemical shift components, solutions of reversed micelles constituted of water, AOT, and decane have been proposed as suitable systems to test and calibrate the performance of magnetic resonance imagers [68]. [Pg.479]

Gillard, R. C., The Cotton Effect in Coordination Compounds Gillespie, Ronald J., see Sawyer, Jeffery F. Glasel, Jay A., Lanthanide Ions as Nuclear Magnetic Resonance Chemical Shift 7 215... [Pg.630]

C and H Nuclear Magnetic Resonance Chemical Shifts and Coupling Constants in the Norbomyl Cation, Cyclopentyl Cation, Nortricyclene, and... [Pg.203]

Because muscle cells are especially rich in terms of phosphorus-containing metabolites (e.g., ATP, ADP, phos-phocreatine, and orthophosphate), nuclear magnetic resonance " has proved to be a valuable noninvasive probe of metabolic changes attending muscle activity. The spectral sensitivity of P is especially high relative to other nuclei, and one can detect cellular concentrations as low as 0.5 mM as well as utilize chemical shift data to define intracellular pH and free magnesium ion concentrations. See also Nuclear Magnetic Resonance Chemical Shift... [Pg.564]

NUCLEAR MAGNETIC RESONANCE Chemical shifts in NMR experiments, SHIELDING... [Pg.730]

Nuclear magnetic resonance chemical shift differences can serve as an indicator of molecular symmetry. If two groups have the same chemical shift, they are isochronous. Isochrony is a property of homotopic groups and of enantiotopic groups under achiral conditions. Diastereotopic or constitutionally heterotopic groups will have different chemical shifts (be anisochronous), except by accidental equivalence and/or lack of sufficient resolution. [Pg.12]

N.F. Chamberlain, Nuclear magnetic resonance chemical shifts of oxygenated unsaturated aliphatics, Anal. Chem. 40 (1968) 1317-1325. [Pg.290]

The ground-state complex between benzene and maleic anhydride was found to have the exo configuration. Bryce-Smith and Hems [44] have measured nuclear magnetic resonance chemical shifts of the ethylenic protons of maleic an-... [Pg.8]

Hynes, M. J., EQNMR A computer program for the calculation of stability constants from nuclear magnetic resonance chemical shift data. J. Chem. Soc., Dalton Trans. 1993, 311-312. [Pg.81]

One use of the magnetic susceptibility is the correction of nuclear magnetic resonance chemical shifts of solutes measured in various solvents so as to be on... [Pg.179]

Glasel, Jay A., Lanthanide Ions as Nuclear Magnetic Resonance Chemical Shift... [Pg.524]

J. Gauss, Effects of electron correlation in the calculation of nuclear magnetic resonance chemical shifts, J. Chem. Phys. 99 (1993) 3629. [Pg.142]

Tossell, J. A. (1984a). Correlation of Si nuclear magnetic resonance chemical shifts in silicates with orbital energy differences obtained from x-ray spectra. Phys. Chem. Mineral. 10, 137-41. [Pg.501]

Wishart DS, Sykes BD, Richards FM. Relationship between nuclear magnetic resonance chemical shift and protein secondary structure. J. Mol. Biol. 1991 222 311-333. [Pg.27]

K. Bock, A. Brignole, and B. W. Sigurskjold, Conformational dependence of 13C nuclear magnetic resonance chemical shifts in oligosaccharides, J.C.S. Perkin Trans. II, (1986) 1711-1713. [Pg.82]

Nuclear Magnetic Resonance Chemical Shifts of Quinazoline (Me4Si, 60 ppm) ... [Pg.9]

Although evaluations of harmonic force constants [d E dq,dqj), elearic polarizabilities d EIdeide ), and dipole moment derivatives (d E/d ,dqj) are perhaps the most common applications of second-order properties (or, equivalently, second derivatives), other areas of interest to chemists can be treated with these techniques. One such field of application that holds great promise for the future is the calculation of nuclear magnetic resonance chemical shifts. [Pg.157]

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