Chemistry Letters p. 745 - 746 (1999)
Update date:2022-09-26
Topics:
Kawase, Takeshi
Hosokawa, Youichi
Kurata, Hiroyuki
Oda, Masaji
The title cyclophane has a preorganized cavity with about 1.2 A 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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