✍ Scribed by Giulio Ceccarelli; Giancarlo Berti; Giorgio Lippi; Bruno Macchia
No coin nor oath required. For personal study only.
NMR spectra of several styrene, stilbene and stilbazole oxides have been determined, and chemical shifts and coupling constants have been correlated with cis‐and trans‐configurations. Assignments have been made for all protons, and double resonance technique and ^13^CH coupling constants have been used in some particular cases. An explanation is proposed for the observation that chemical shifts of oxirane protons are higher for cis than for trans isomers.
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A magnesium oxide obtained by thermal decomposition of commercially available magnesium hydroxide was refluxed in water and acetone in order to improve its chemical and textural properties with the purpose of using it as a support for metals in heterogeneous catalysts. X-ray diffraction, CO 2 chemis
## Abstract ^13^C NMR spectra of 4‐substituted 3‐chloro‐ and 3‐bromo‐2,6‐dimethylpyridine __N__‐oxides in CDCI~3~ and their chemical shifts are reported. The influence of the electronic properties of the substituent in the 4‐position and the __ortho__ effect on the direction of chemical shifts and
## Abstract ^15^N NMR data for a series of 12 __para__‐substituted benzamidoximes and benzamidinium salts were determined in dimethyl sulfoxide. For the amino group of benzamidoximes ^1^__J__(N,H) coupling constants were determined using polarization transfer techniques; the other ^15^N atoms were
## Abstract In order to perform the analysis of the components contained in fossil fuels, carbon assignments of new methylated derivatives of tetralin and indan were obtained. Their chemical shifts were calculated by applying additivity rules.
Two kinds of ethylene-l-butene copolymers that were produced by the different procedures, that is, the slurry and the high-pressure polymerizations, were characterized by differential scanning calorimetry (DSC) and carbon-13 nuclear magnetic resonance (W-NMR) spectroscopy. The melting points of both