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Shi, Genggongwo,Gadhe, Changdev G.,Park, Sung-Woo,Kim, Kwang S.,Kang, Jongmin,Seema, Humaira,Singh, N. Jiten,Cho, Seung Joo American Chemical Society 2014 ORGANIC LETTERS Vol.16 No.2
<P>A series of novel coronands having a 2n-crown-n topology based on trioxane (6-crown-3) derivatives are designed and characterized. These neutral hosts can sense anions through pure aliphatic C-H hydrogen bonding (HB) in condensed phases due to the unusual topology of 2n-crown-n. C-H bonds are strongly polarized by two adjacent oxygen atoms in this scaffold. These hosts provide a rare opportunity to modulate anion binding strength by changing the electronic nature of aliphatic C-H bonds and offer ease of synthesis.</P>