Fluorescence in alkali-metal salts of some acyclic, resonance-stabilized carbanions

✍ Scribed by Marye Anne Fox; Tamara A. Voynick

• Book ID: 104225557
• Publisher: Elsevier Science
• Year: 1980
• Tongue: French
• Weight: 235 KB
• Volume: 21
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)92839-9

✦ Synopsis

While fluorescence can be clearly observed in resonance-stabilized acyclic anions, its occurrence is insufficient for unambiguous assignment of either ion-pairing type or anion geometry.

As. in cyclic, aromatic anions, the requirement for contact ion-pairing is less severe in the excited state than in the ground state.

The fluorescence lifetimes of acyclic anions are affected more by the associated cation than by the type of ion-palring.

Studies which report emission from hydrocarbon anions are relatively rare, most examples having been discovered within the last decade.