Synthesis and Complexing Ability of a New Type of Molecular Clips Based on Diaza-18-crown-6 or Diamino-Dibenzo-18-crown-6 with Pendant p-tert-butylcalix[4]arenes
A convenient method for obtaining a new type of molecular clips based on diazacrown or diamino-dibenzocrown ethers with two calixarene molecules attached to a central fragment using an amide bond was developed. Clip <b>1</b>, based on diaza-18-crown-6, demonstrates exceptional selectivit...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
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| Series: | Chemistry Proceedings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-4583/14/1/72 |
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| Summary: | A convenient method for obtaining a new type of molecular clips based on diazacrown or diamino-dibenzocrown ethers with two calixarene molecules attached to a central fragment using an amide bond was developed. Clip <b>1</b>, based on diaza-18-crown-6, demonstrates exceptional selectivity toward barium in the alkaline earth metal series and forms 2:1 (L:M) complexes with copper and iron cations. With sodium and magnesium cations, clip <b>2</b>, based on diamido-dibenzo-18-crown-6, forms 1:2 (L:M) complexes. The same compound interacts with cations of copper, iron, and cadmium to form 1:1 complexes with low stability constant values. |
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| ISSN: | 2673-4583 |