14N quadrupole coupling in thermochromic and photochromic N-salicyclideneanilines
✍ Scribed by E. Hadjoudis; F. Milia; J. Seliger; R. Blinc; V. Z̆agar
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 353 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0301-0104
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📜 SIMILAR VOLUMES
The temperature dependence of the proton-t4N double resonance spectra demonstrates that thermochromism in solid N-S&lorosalicylideneaniline is accompanied by intramolecular proton transfer and an enol-keto transformation.
The r4N electric quadrupole coupling constants and asymmetry parameters have been determined for the three chemically nonequivalent nitrogen sites in 2-cycle-octyl-amino+nitropyridine (COANP) with the help of proton-nitrogen nuclear quadrupole double resonance.
The "N electric quadrupole coupling constants and asymmetry parameters have been detetmioed for the three chemicalIy oooequivalent nitrogen sites in both 4-(N,Ndimethyhunioo)-3-acetamidonitrobeozeoe (DAN) and ( -)-2-(a-methylbenzylomamino)-5-oitropyridine (MBANP) with the help of proton-nitrogen ouc
hIi E&C 5% nuclear quadrupoJ? resonances in imidazole were observed. U&g deuterafed samples, the EQR of the deuterium in P&-C bond and the first unamb~~ous ideu~ication of t.be quadrupole couplkg constants at a bi-coordinate N site were cbtaiaed.