MOLECULAR-COMPLEXES OF CROWN-ETHERS .4. COMPLEXES OF CROWN-ETHERS WITH PICRIC ACID

Authors
SALMAN SR DERWISH GW ALMARSOUMI SMH
Citation
Sr. Salman et al., MOLECULAR-COMPLEXES OF CROWN-ETHERS .4. COMPLEXES OF CROWN-ETHERS WITH PICRIC ACID, Journal of inclusion phenomena and molecular recognition in chemistry, 25(4), 1996, pp. 295-302
Citations number
24
Categorie Soggetti
Chemistry,Crystallography
Journal title
Journal of inclusion phenomena and molecular recognition in chemistry → ACNP
ISSN journal
09230750
Volume
25
Issue
4
Year of publication
1996
Pages
295 - 302
Database
ISI
SICI code
0923-0750(1996)25:4<295:MOC.CO>2.0.ZU;2-A
Abstract
The intermolecular charge-transfer spectra of seven crown ethers (CE), viz, 15C5, 18C6, B15C5, B18C6, DC18C6, and DB24C8, with picric acid ( PA) were studied in the UV-visible region in 1,2-dichloroethane (DCE) at 298.2 K. The complex formation equilibrium constant values, K-c, su ggest that many factors contribute to K-c, among them crown ether conf ormation, size and the presence of an aromatic ring in the CE.