## Abstract The role of steric factors in magnetic nonโequivalence anisochronism of complex geminal groups and of their fragments in compounds of the general formula RCH(Ph)CH(COORโฒ)~2~ has been investigated. CMR anisochronism is more sensitive to conformational and other steric changes than is PMR
The 1H and 13C nuclear magnetic resonance spectra of 2-aminoperimidine hydrobromide
โ Scribed by Martha C Thorpe; W.C Coburn Jr.; Robert F Struck
- Publisher
- Elsevier Science
- Year
- 1977
- Weight
- 180 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-2364
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract The ^1^H and ^13^C NMR spectra of 1,2โdibromoethaneโ^13^C~2~ have been analyzed to determine the magnitude (38ยท9 Hz) and sign (positive) of ^1^__J__(C๏ฃฟC) relative to those of ^3^__J__(H๏ฃฟH) (positive). This type of coupling appears to be rather insensitive to the presence of bromine or m
## The carbon aromaticities (fa) of vitrinite, exinite, micrinite and fusinite from a high-volatile A bituminous coal have been determined by 13C-' H cross-polarization nuclear magnetic resonance spectrometry. Values of f, for the four macerals were found to decrease in the order: fusinite > micr