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Investigation of homo- and heterodimer alkali metal cation complexes of resorc[4]arenes by electrospray ionization mass spectrometry

✍ Scribed by Matthias C. Letzel; Ceno Agena; Jochen Mattay

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
178 KB
Volume
37
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

Resorc[4]arenes are compounds with interesting properties, mainly because of their ability to form host–guest complexes with the guest located inside the cavity. The size of the guest limits the complexation, as shown by a competition experiment with tetraalkylammonium ions of different size. By electroscopy ionization tandem mass spectrometric experiments on resorc[4]arene heterodimers bearing an alkali metal ion as guest, it was found that there must be two different binding mechanisms for alkali metal ions with high surface charge density (Li^+^ and Na^+^) on the one hand compared with those with a lower surface charge density on the other hand (K^+^, Rb^+^, Cs^+^). Copyright © 2001 John Wiley & Sons, Ltd.

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