ISSN:
1573-1111
Schlagwort(e):
UV visible spectroscopy
;
donor-acceptor charge transfer band
;
crown ethers
;
15C5
;
18C6
;
B15C5
;
BI8C6 and DB24C8
;
picric acid
;
effect of salt on charge transfer band
;
conformation of crown ether
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
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, suggest that many factors contribute toK c, among them crown ether conformation, size and the presence of an aromatic ring in the CE.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01044999
Permalink
