✦ LIBER ✦

Reactivity-selectivity relationships. III. Evidence for ion pair intermediates in the solvolysis of secondary derivatives

✍ Scribed by Addy Pross; Rodi Koren

Publisher: Elsevier Science
Year: 1975
Tongue: French
Weight: 181 KB
Volume: 16
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)91337-6

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✦ Synopsis

Received in UK 2nd September 197"; accepted for publication 4th September 1?75)

The possible formation of ion pairs in SN2 type solvolysis reactions was first proposed by Sneen' and coworkers.

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Chelate and intramolecular ion-pair formation: A guiding concept for structure/selectivity relationships in the liquid-liquid extraction of alkali and alkaline earth metal ions by anionic crown ether derivatives

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Crown ether dyes with pendent anionic side-arms were synthesized for extractionspectrophotometry of alkali and alkaline earth metal ions. Dramatic changes in metal selectivity were obtained simply by changing the nature of the anionic side-arm on the same crown ether skeleton. A structure/metal sele