Naslov
Hydrogen Bonding Patterns and pi...pi Interactions in Some Derivatives of 2-substituted indan-1, 3-diones

Autori
Pavlović, Gordana ; Ahmedova, Anife ; Stoyanov Neyko ; Mitewa, Mariana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XVIII. Croatian-Slovenian Crystallographic Meeting, Varaždin, Croatia, 17 - 21 June, 2009, Book of Abstracts. / - , 2009

Skup
XVIII. Croatian-Slovenian Crystallographic Meeting

Mjesto i datum
Varaždin, Hrvatska, 17.06.2009. - 21.06.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
hydrogen bonds; pi...pi interactions; 2-substituted indan-1; 3-diones

Sažetak
The unique properties of 2-substituted-indan-1, 3-diones are due to the presence of the indan-1, 3-dione moiety (Scheme ; indane = benzocyclopentane), which is known as a very strong electron acceptor. When it is coupled with electron donating substituents with different strength, the photophysical properties, due to intramolecular charge transfer, of the dipolar molecules can be modulated. On the other hand, the complexation capabilities of these compounds have found practical application as extracting agents for various transition metal ions. 2-Substituted indan-1, 3-dione derivatives with the Csp2atom at position 2 possess intramolecular resonance assisted hydrogen bonds (RAHB) in the -conjugated -dicarbonyl fragment, thus allowing tautomerization via an intramolecular proton transfer process. The geometry of RAHB is as expected with the O•••O distance spanning in the range 2.625(1) Å - 2.650(3) Å [bond angle range 147(2)o – 162(5) o]. The intermolecular hydrogen bonds are of the C-H•••O type and they will be discussed in details as well as pi•••pi interactions.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA