page_title: Cryptand
hierarchical_section_title: Cryptand
caption_attribution_description: X-ray structure of K+ [2.2.2]cryptate. Original summary: "This is a picture generated from crystal structure data reported by Roger Alberto, Kirstin Ortner, Nigel Wheatley, Roger Schibli, and August P. Schubiger in the Journal of the American Chemical Society, Year 2001, Vol 123, Pages 3135-3136. It shows a potassium ion bound within a Cryptand[2.2.2]. It was made by myself and is free to be used by all."
context_page_description: Cryptands are a family of synthetic bicyclic and polycyclic multidentate ligands for a variety of cations. The Nobel Prize for Chemistry in 1987 was given to Donald J. Cram, Jean-Marie Lehn, and Charles J. Pedersen for their efforts in discovering and determining uses of cryptands and crown ethers, thus launching the now flourishing field of supramolecular chemistry. The term cryptand implies that this ligand binds substrates in a crypt, interring the guest as in a burial. These molecules are three-dimensional analogues of crown ethers but are more selective and strong as complexes for the guest ions. The resulting complexes are lipophilic.
context_section_description: Cryptands are a family of synthetic bicyclic and polycyclic multidentate ligands for a variety of cations.  The Nobel Prize for Chemistry in 1987 was given to Donald J. Cram, Jean-Marie Lehn, and Charles J. Pedersen for their efforts in discovering and determining uses of cryptands and crown ethers, thus launching the now flourishing field of supramolecular chemistry. The term cryptand implies that this ligand binds substrates in a crypt, interring the guest as in a burial. These molecules are three-dimensional analogues of crown ethers but are more selective and strong as complexes for the guest ions. The resulting complexes are lipophilic.
caption: Structure of [2.2.2]cryptand encapsulating a potassium cation (purple). At crystalline state, obtained with an X-ray diffraction.[1]
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