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Molecular design of crown ethers. 22. Synthesis of benzocrown ether derivatives and their solvent extraction with univalent/bivalent metal picrates
Abstract
Three novel benzocrown ether derivatives have been synthesized and their cation binding behavior with uni-and bi-valent metal ions was evaluated by the solvent extraction of aqueous metal picrates. The obtained results indicate that the size-fit of crown ether and metal cation, and electron effect of the side arm attached to benzocrown ethers affect their cation binding ability and selectivity.
