Model studies toward trivalent cation binding by appropriately functionalized calix[4]arenes
Molecular modeling and molecular dynamics of a series of calix[4]arene tetracarboxylic acids and tricarboxylic acid monoamides revealed that in an aqueous environment the phenolic oxygen atoms do not participate in the complexation of Ac3+. This observation led to the design and synthesis of new cal...
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Published in | Journal of the Chemical Society, Perkin Transactions 2 no. 11; pp. 2351 - 2360 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
CAMBRIDGE
Royal Soc Chemistry
01.11.1998
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Subjects | |
Online Access | Get full text |
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Summary: | Molecular modeling and molecular dynamics of a series of calix[4]arene tetracarboxylic acids and tricarboxylic acid monoamides revealed that in an aqueous environment the phenolic oxygen atoms do not participate in the complexation of Ac3+. This observation led to the design and synthesis of new calix[4]arene based ionophores, containing multiple glycine units, having an increased number of potential donor sites. Potentiometric titrations in methanol with La3+ as a non-radioactive model for Ac3+ indicated that, although the level of complexation is high for all ligands, a new calix[4]arene derivative 5 is superior at pH < 4. |
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ISSN: | 1472-779X 0300-9580 1364-5471 |
DOI: | 10.1039/a805950k |