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Preferred Label : crown;

IUPAC definition : A molecular entity comprising a monocyclic ligand assembly that contains three or more binding sites held together by covalent bonds and capable of binding a i guest /i in a central (or nearly central) position. The adducts formed are sometimes known as 'coronates'. The best known members of this group are macrocyclic polyethers, such as '18-crown-6', containing several repeating units –CR sub 2 /sub –CR sub 2 /sub O– (where R is most commonly H), and known as crown ethers.;

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A molecular entity comprising a monocyclic ligand assembly that contains three or more binding sites held together by covalent bonds and capable of binding a i guest /i in a central (or nearly central) position. The adducts formed are sometimes known as 'coronates'. The best known members of this group are macrocyclic polyethers, such as '18-crown-6', containing several repeating units –CR sub 2 /sub –CR sub 2 /sub O– (where R is most commonly H), and known as crown ethers.

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28/07/2025


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