Nuclear magnetic resonance spectroscopy, carbon

Hawkes, G.E., Smith, R.A., and Roberts, J.D., Nuclear magnetic resonance spectroscopy carbon-13 chemical shifts of chlorinated organic compounds, J. Org. Chem., 39, 1276, 1974. [Pg.428]

Carbon-13 Nuclear Magnetic Resonance Spectroscopy Carbon-13 Chemical Shifts and Coupling Constants... [Pg.153]

Nourse, J. G., and Roberts, J. D. (1975)./. Amer. Chem. Soc. 97, 4584. Nuclear Magnetic Resonance Spectroscopy. Carbon-13 Spectra of Some Macrolide Antibiotics and Derivatives. Substituent and Conformational Effects. [Pg.424]

Nuclear magnetic resonance spectroscopy carbon, 510-517, 535 alcohols, 606... [Pg.1234]

C Nuclear Magnetic Resonance Spectroscopy. Carbon-13 NMR spectra were obtained at 22.5 MHz on a JEOL FX-90Q Spectrometer using a 5000 Hz window. Approximately 30,000 transients were accumulated for each sample consisting of 0.1 to 0.2 grams of copolymer in 2 mL of D2O in 10 mm tubes. [Pg.164]

Dorman D E, Angyal S J, Roberts J D 1970 Nuclear magnetic resonance spectroscopy. Carbon-13 spectra of some inositols and their 0-methylated derivatives. J Am Chem Soc 92 1351-1354... [Pg.112]

Mooney E F, Winson P H 1969 Carbon-13 nuclear magnetic resonance spectroscopy. Carbon-13 chemical shifts and coupling constants. Ann Rev NMR Spec 2 153—218... [Pg.119]

Monomer (Section 6 21) The simplest stable molecule from which a particular polymer may be prepared Monosaccharide (Section 25 1) A carbohydrate that cannot be hydrolyzed further to yield a simpler carbohydrate Monosubstituted alkene (Section 5 6) An alkene of the type RCH=CH2 in which there is only one carbon directly bonded to the carbons of the double bond Multiplicity (Section 13 7) The number of peaks into which a signal IS split in nuclear magnetic resonance spectroscopy Signals are described as singlets doublets triplets and so on according to the number of peaks into which they are split... [Pg.1289]

Instmmental methods of analysis provide information about the specific composition and purity of the amines. QuaUtative information about the identity of the product (functional groups present) and quantitative analysis (amount of various components such as nitrile, amide, acid, and deterruination of unsaturation) can be obtained by infrared analysis. Gas chromatography (gc), with a Hquid phase of either Apiezon grease or Carbowax, and high performance Hquid chromatography (hplc), using siHca columns and solvent systems such as isooctane, methyl tert-huty ether, tetrahydrofuran, and methanol, are used for quantitative analysis of fatty amine mixtures. Nuclear magnetic resonance spectroscopy (nmr), both proton ( H) and carbon-13 ( C), which can be used for quaHtative and quantitative analysis, is an important method used to analyze fatty amines (8,81). [Pg.223]

Physical Methods of Examination. Physical methods used to examine coals can be divided into two classes which, in the one case, yield information of a stmctural nature such as the size of the aromatic nuclei, ie, methods such as x-ray diffraction, molar refraction, and calorific value as a function of composition and in the other case indicate the fraction of carbon present in aromatic form, ie, methods such as ir and nuclear magnetic resonance spectroscopies, and density as a function of composition. Some methods used and types of information obtained from them are (41) ... [Pg.219]

When simple Hquids like naphtha are cracked, it may be possible to determine the feed components by gas chromatography combined with mass spectrometry (gc/ms) (30). However, when gas oil is cracked, complete analysis of the feed may not be possible. Therefore, some simple definitions are used to characterize the feed. When available, paraffins, olefins, naphthenes, and aromatics (PONA) content serves as a key property. When PONA is not available, the Bureau of Mines Correlation Index (BMCI) is used. Other properties like specific gravity, ASTM distillation, viscosity, refractive index. Conradson Carbon, and Bromine Number are also used to characterize the feed. In recent years even nuclear magnetic resonance spectroscopy has been... [Pg.434]

G. C. Levy, R. L. Liehter, G. L. Nelson, Carbon-13 Nuclear Magnetic Resonance Spectroscopy, 2nd edn, Wiley-Interseienee, New York, 1980. [Pg.250]

C NMR (Section 13.14) Nuclear magnetic resonance spectroscopy in which the environments of individual carbon atoms are examined via their mass 13 isotope. [Pg.1279]

We saw in Chapter 12 that mass spectrometry gives a molecule s formula and infrared spectroscopy identifies a molecule s functional groups. Nuclear magnetic resonance spectroscopy does not replace either of these techniques rather, it complements them by "mapping" a molecule s carbon-hydrogen framework. Taken together, mass spectrometry, JR, and NMR make it possible to determine the structures of even very complex molecules. [Pg.440]

Lambert, J. B., J. S. Frye, and A. Jurkiewicz (1992), The provenance and coal rank of jet by carbon-13 nuclear magnetic resonance spectroscopy, Archaeometry 34, 121-128. [Pg.592]

V. Wray, Carbon-carbon coupling constants a compilation of data and a practical guide. In Progress in Nuclear Magnetic Resonance Spectroscopy 1979, Vol. 13, 1979, pp. 177-256. [Pg.289]

Theng BKG, Newman RH, Whitton JS (1998) Characterization of an alkylammonium-montmorillonite-phenanthrene intercalation complex by carbon-13 nuclear magnetic resonance spectroscopy. Clay Miner 33 221-229... [Pg.174]

Laughlin et al. [122] analysed chloroform extracts of tributyltin dissolved in seawater using nuclear magnetic resonance spectroscopy. It was shown that an equilibrium mixture occurs which contains tributyltin chloride, tributyl tin hydroxide, the aquo complex, and a tributyltin carbonate species. Fluorometry has been used to determine triphenyltin compounds in seawater [123]. Triph-enyltin compounds in water at concentrations of 0.004-2 pmg/1 are readily extracted into toluene and can be determined by spectrofluorometric measurements of the triphenyltin-3-hydroxyflavone complex. [Pg.475]

Carbon-13 nuclear magnetic resonance spectroscopy is a powerful method for studying brain metabolism. [Pg.550]

Lambert, J.B., Beck, C.W. and Frye, J.S. (1988). Analysis of European amber by carbon-13 nuclear magnetic resonance spectroscopy. Archaeometry 30 248-263. [Pg.73]

CARBON-13 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY OF POLYSACCHARIDES... [Pg.13]

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See also in sourсe #XX -- [ Pg.547 , Pg.548 , Pg.549 , Pg.550 , Pg.551 , Pg.552 , Pg.553 , Pg.554 , Pg.555 , Pg.556 , Pg.557 , Pg.558 , Pg.576 ]

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