Crown ethers and cryptands are organic macrocyclic ligands that have a remarkable ability to interact with alkali metals. What is the nature of the complex they form with an alkali metal like Sodium (

Question

Crown ethers and cryptands are organic macrocyclic ligands that have a remarkable ability to interact with alkali metals. What is the nature of the complex they form with an alkali metal like Sodium ($Na$)?

Prashant Kotian · Accepted Answer

Correct answer: C. Crown ethers and cryptands (e.g., Cryptand-222) form highly stable coordination complexes with alkali metal cations by trapping them inside their central oxygen/nitrogen-lined cavities via multiple strong ion-dipole interactions.

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