Using the technique of nuclear doible ;x?mnane wias&n mking by !ev& crossing, tie nuclear quadrupole r~SO~;ll;~ of 14N has been msnsurcd in L-histidine, D-L-histidine. L-histidinz hydrochloride monohydrate, sodium UDXZIE?~~ and urocmic acid at 77 K. The nuclear quadrupofe resonamz of both 14N and 2E
Applications of nuclear quadrupole resonance to organic chemistry. Tetrachlorocyclopropene and related compounds
✍ Scribed by R.Martin Smith; Robert West
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 165 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
The 35C1 nuclear quadrupole resonance (nqr) spectra of tetrachlorocyclopropene (G&l,, L) and trichlorocyclopropenium tetrachloroaluminate (CnC1n+, AlC14-) were reported recently by Lucken and Mateline.'
Two groups of resonances were observed for i (see Table I), the lower frequency bands being attributed to the vinylic chlorines by reference to Cis-1,2--
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## Abstract The NMR spectra of a series of heterocyclic compounds analogous to anthracene have been investigated at 220 and 60 MHz. Correlations have been made with molecular geometry and parameters calculated from semi‐empirical MO theory. For planar molecules, the chemical shift of the proton __o