Naslov
Merocyanine isomers of spiro[indolino-indolopyrans]: 1H and 13C NMR and X-ray crystal structure study

Autori
Raić, Silvana ; Vorkapić-Furač, Jasna ; Hergold-Brundić, Antonija ; Nagl, Ante ; Mintas, Mladen ; Mannschreck, Albrecht

Izvornik
Croatica chemica acta (0011-1643) 69 (1996), 3; 987-996

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
spyro[indolino-indolopyrans] ; merocyanine isomers ; 1H and 13C NMR ; X-ray crystall structure study

Sažetak
The synthesis of stable merocyanine isomers 4 and 5 of the corresponding spyro[indolino-indolopyrans] is described. The structure of 4 and 5 was deduced on the basis of their 1H and 13C NMR spectra. Geometrical data from X-ray structure analysis show that indolo and indolino rings in 4 are coplanar with the central diene bridge. The bond length shortening of the central single bond and the heterocyclic moieties indicate an electron delocalization over the whole molecule.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

Napomena
Rad je prezentiran na skupu The Tenth Dubrovnik International Course and Conference MATH/CHEM/COMP, održanom u Dubrovniku, Hrvatska, 1995. god.

POVEZANOST RADA