Molecular design of crown ethers. 18.1 Cationextractability andselectivities of selena-13- to 14-crown-4

• 来源期刊: 中国化学(英文版)
• 年，卷（期）: 2000,（1）
• 所属期刊栏目: Articles
• 页码范围: 66-68
• 页数: 3页
• 语种: 英文

摘要

Three selena-crown-4 derivatives have been prepared and their cation binding abilities and selectivities with alkali and heavy metal ions have been evaluated by solvent extraction of aqueous metal picrates to show the highest Ag+ extractability for novel benzo-selena-14-crown-4 (2, 3-benzo-7,12-diselena1, 4-dioxacyclotetradecane-2-ene) over any other crown ethers.