8,16,24,32-tetramethoxy[2.2.2.2]metacyclophane-1,9,17,25-tetrayne: A novel ionophore having a preorganized but unexpectedly flexible cavity

被引:21
作者
Kawase, T [1 ]
Hosokawa, Y [1 ]
Kurata, H [1 ]
Oda, M [1 ]
机构
[1] Osaka Univ, Grad Sch Sci, Dept Chem, Toyonaka, Osaka 5600043, Japan
关键词
D O I
10.1246/cl.1999.745
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The title cyclophane has a preorganized cavity with about 1.2 Angstrom in diameter surrounded by four oxygen atoms (X-ray analysis); however, solvent extraction experiments using alkali metal picrates revealed the unexpectedly flexible nature of the cavity that forms 1:1 complexes with various alkali metal ions with considerably large association constants.
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页码:745 / 746
页数:2
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