## High -resolution 'H NMR (500 MHzHpectra were recorded for morphine, 3-O-acetylmorphine, 6-0-acetylmorphine and diacetylmorphine (heroin). Complete assignment of all proton resonances was made for these substances following determination of accurate chemical shift and coupling data by spectral s
High resolution proton magnetic resonance spectra of heterocyclics 1,4-benzodithiin and 1,4-benzodioxin
✍ Scribed by K. K. Deb; J. E. Bloor; T. C. Cole
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- English
- Weight
- 356 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The proton magnetic resonance spectra of 1,4‐benzodithiin and 1,4‐benzodioxin have been fully analyzed. The effects of the substituent heteroatoms on the chemical shifts of the various protons in the two molecules have been discussed.
📜 SIMILAR VOLUMES
Most ovarian tumors are cystic structures containing variable amounts of fluid. Several studies of ovarian cyst fluid focus on one specific metabolite using conventional assay systems. We examined the potential of 1 H-nuclear magnetic resonance spectroscopy in evaluation of the overall metabolic com
## Abstract Proton magnetic resonance spectra at 60 MHz are reported for 9, 9′‐biphenanthryl, 1‐phenylfluoranthene, 9‐benzylphenanthrene, 1‐, 4‐ and 9‐phenylphenanthrenes and 9‐methyl‐10‐phenylphenanthrene, all in CS~2~ solution. Approximate values of some of the chemical shifts and coupling consta
## Abstract By recording two spectra of the same molecule in different nematic liquid crystals, and analysing the data simultaneously, information has been obtained on the molecular structures of 1,2,4,5‐ (1) and 1,2,3,4‐tetrachlorobenzene (2). Carbon–hydrogen and carbon–carbon internuclear distanc
## Abstract The application of proton (^1^H) magnetic resonance spectroscopic imaging (MRSI) allows for noninvasive, localized analyses of brain biochemistry; however, minimal work has been devoted to the evaluation of ^1^H MRSI reproducibility. This study examined the reproducibility of ^1^H MRSI
The possible stable forms and molecular structures of 1-cyclohexylpiperazine (1-chpp) and 1-(4-pyridyl)piperazine (1-4pypp) molecules have been studied experimentally and theoretically using nuclear magnetic resonance(NMR) spectroscopy. (13)C, (15)N cross-polarization magic-angle spinning NMR and li