Aza-crown ethers with quinone side chains: Synthesis, complexation, and protonation
β Scribed by Ossowski, Tadeusz ;Schneider, Hermann
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1990
- Tongue
- English
- Weight
- 473 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0009-2940
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Spacer-Chromoionophores -Polymethine Dye Substituted Aza-Crown Ethers with Increased Complexation Ability. -A variety of polymethine crown ether derivatives are synthesized and their complex formation constants with Na + and K + are determined using 1 H NMR spectroscopy. Crown ethers such as (XII),
## Abstract Copper(II) and nickel(II) cyclidenes linked with one or two 15βazacrownβ5 ethers (**3Ni**, **4Ni** and **4Cu**) as well as similar model morpholineβsubstituted derivatives (**2Cu**, **2Ni**) have been synthesized and characterized using ESI massβspectrometry, Xβray diffraction, spectros