ISSN:
1573-1111
Schlagwort(e):
formation constants
;
stilbene crown ethers
;
conductometric titration
;
alkali metal cations
;
silver cation
;
nitromethane
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract The complexation reactions between the macrocyclic polyethers dibenzo-18-crown-6, benzo-18-crown-6, benzo-15-crown-5 and polyethers bearing a stilbene unit with alkali metal and silver cations have been studied conductometrically in nitromethane. The formation constants of 1 : 1 and 1 : 2 (metal : ligand) complexes were determined and found to decrease with increasing cation diameter. The stability of the stilbene crown – metal cation complexes is lower than for complexes of other investigated crown ethers with analogous cations. There seem to be some effects of double bond-silver ion interactions.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1008145406568
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