crown ether
Quick Summary
Crown ethers are specialized cyclic molecules composed of repeating ether units, forming a ring structure that resembles a crown. These compounds, first synthesized by Charles J. Pedersen in 1967, are known for their ability to selectively bind metal cations based on their size, fitting into the central cavity of the "crown". For example, 18-crown-6 specifically complexes potassium ions (K+), while 15-crown-5 binds sodium ions (Na+). This size-selective complexation has led to the development of supramolecular chemistry.123
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- Donald J. Cram
…Pedersen’s ground-breaking synthesis of the crown ethers—basically two-dimensional organic compounds that are able to recognize and selectively combine with the ions of certain metal elements. Cram synthesized molecules that took this chemistry into three dimensions, creating an array of differently shaped molecules that could interact selectively with other chemicals because…
Read More…Pedersen’s ground-breaking synthesis of the crown ethers—basically two-dimensional organic compounds that are able to recognize and selectively combine with the ions of certain metal elements. Cram synthesized molecules that took this chemistry into three dimensions, creating an array of differently shaped molecules that could interact selectively with other chemicals because…
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Jean-Marie Lehn…on Pedersen’s achievement in creating crown ethers, a class of two-dimensional ring-shaped organic compounds that are capable of selectively recognizing and combining with other molecules. In the course of his efforts to synthesize three-dimensional molecules that would possess similar reactive characteristics, Lehn created a molecule that combines with the chemical…
Read More…on Pedersen’s achievement in creating crown ethers, a class of two-dimensional ring-shaped organic compounds that are capable of selectively recognizing and combining with other molecules. In the course of his efforts to synthesize three-dimensional molecules that would possess similar reactive characteristics, Lehn created a molecule that combines with the chemical…
Read More- Charles J. Pedersen
…for his synthesis of the crown ethers—a group of organic compounds that would selectively react with other atoms and molecules much as do the molecules in living organisms.
Read More…for his synthesis of the crown ethers—a group of organic compounds that would selectively react with other atoms and molecules much as do the molecules in living organisms.
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