Compounds,Crown

《英文msh词典》Compounds,Crown
[入口词] Compounds,Crown
[主题词] Crown Ethers
[英文释义] Macrocyclic polyethers with the repeating unit of (-CH2-CH2-O)n where n is greater than 2 and some oxygens may be replaced by nitrogen,sulfur or phosphorus. These compounds are useful for coordinating CATIONS. The nomenclature uses a prefix to indicate the size of the ring and a suffix for the number of heteroatoms.