15N-enriched nitrogen in polymict ureilites and its bearing on their formation
β Scribed by Grady, Monica M.; Pillinger, C. T.
- Book ID
- 109752009
- Publisher
- Nature Publishing Group
- Year
- 1988
- Tongue
- English
- Weight
- 346 KB
- Volume
- 331
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/331321a0
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π SIMILAR VOLUMES
Nitric oxide (NO) and nitrous oxide (N 2 O) are two important trace gases in the atmosphere. Determining the concentration and 15 N abundance of NO and N 2 O in air is difficult owing to their very low concentration in the atmosphere (NO `1 ppb(v); N 2 O % 0.32 ppm(v)). Although 15 N analysis of N 2
## Abstract The Nο£ΏHΔbondX (X = N,O,S) intramolecular hydrogen bond in the series of 2(2β²βheteroaryl)pyrroles and their trifluoroacetyl derivatives is examined by the ^1^H, ^13^C, ^15^N spectroscopy and density functional theory (DFT) calculations. The influence of the hydrogen bond on coupling and