The effect of coordination on the optical spectra of alkali metal cation-electron pairs in ethers

✍ Scribed by W.A. Seddon; J.W. Fletcher; R. Catterall; F.C. Sopchyshyn

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 240 KB
• Volume: 48
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(77)85098-7

✦ Synopsis

Rccclvcd 20 Deccmbcr 1976 Rcv~rcd rnanusx~p~ rccuivcd 28 hfnrcll 1977 Transient optical absorption bands observed in li)-* M sodlurn tciraphenylbor<)n solutions m tetmbydrofuran (TIIF), di~~lctbo~ycthanc (DBIC), dlglymc (DC) and tnglymc (TG). with maxima at =900 and 4 1600 nm. are accgncd to tbc formntlon of "tght" and "Ioosc" Ion-pairs, respcctivciy. The proportion of "loose " ion-pairs lncrrxxcs with increasing coordination ot the urlvcnt in the order -l3lr 4 DME < 1X < 'IX. Posrlhle structures for the "tiflbt" and "loose" Ion-pairs arc indicated.