Hickey JP, Butler IS, Pouskouleli G (1980) C-13 NMR-spectra of some representative hormonal steroids. J. Magn. Reson . 38 ; 501–506.Hickey JP, Butler IS, Pouskouleli G. Carbon-13 NMR spectra of some representative hormonal steroids. J. Magn. Reson., 1969; 38(3): 501-506....
A table of typical chemical shifts in C-13 NMR spectra CH3 CH2 The external magnetic field experienced by the carbon nuclei is affected by the electronegativity of the atoms attached to them. The effect of this is that the chemical shift of the carbon increases if you attach an atom like ...
300 cm−1.13C solid-state NMR was therefore performed to show the presence of carbon (Fig. 2b). Interestingly, the resonance appears around 125 p.p.m., similar to that of reduced graphene oxide/graphite27, which corresponds tosp2carbons with an electron density very similar to graphite...
The NMR spectra were acquired through the following procedure The chromatographic samples were incubated at 60 °C in a drying oven for 12 h. Subsequently, solvent removal was carried out, and some solid powder was dissolved in deuterated chloroform for NMR analysis. For the irradiated samples...
Mani F, Peruzzini M, Stoppioni P (2006) CO2 absorption by aqueous NH3 solutions: speciation of ammonium carbamate, bicarbonate and carbonate by 13C NMR study. Green Chem 8:995–1000 Article Google Scholar Barzagli F, Giorgi C, Mani F, Peruzzini M (2017) CO2 capture by aqueous Na2CO3 ...
Carbon tetrachloride readily dissolves stannic chloride, SnCl4, but not ferric chloride, FeCl3. Carbon tetrachloride forms a large number of binary and several ternary azeotropic mixtures; a partial list of the former is shown in Table 2. Many polymer films, eg, polyethylene and polyacrylonitrile,...
Table 1. Porous properties of carbon aerogels and cryogels. SampleR/CR/W (gcm−3)R/FGelSBET (m2g−1)Vmes (cm3g−1)rpeak (nm)Smic (m2g−1)Vmic (cm3g−1)Vmac (cm3g−1) A1 25 0·125 0·5 aerogel 774 1·34 3·6 138 0·04 0·18 cryogel 1107 1·54 6·2 631 ...
Thereby the 13C-labeled fraction of biomass was synthesized in the induced conditions and the information of the pathways that were active when the cellulase gene expression was induced was recorded in the labelling patterns of proteinogenic amino acids. Nuclear Magnetic Resonance (NMR) spectroscopy ...
was determined from 1H NMR spectra of the reaction mixture20. While the full data set is given in Supplementary Table 1, we comment on general trends. Conversion of benzylamine, the yield of 1a and the combined yield of R,S- and R,R-2a diastereomers versus the mass of carbon nitride ...
Carbon-13 NMR spectra of carotenoids 101 Table 2. "C-NMR datafor the e-end oflutein and related models 2 3 4 5 6 8 Lutein (VII) 34.0 44.7 65.9 125.6 137.8 55.0 8 trans diol (VIII) 34.2 45.5 66.4 125.9 137.8 55.0 8 cis diol (IX) 35.2 41.3 67.3 126.0 138.0 55.0t 8 a-isophor...