Anions Stabilize Each Other inside Macrocyclic Hosts

被引：119

作者：

Fatila, Elisabeth M. ^{[1
]}

Twum, Eric B. ^{[1
]}

Sengupta, Arkajyoti ^{[1
]}

Pink, Maren ^{[1
]}

Karty, Jonathan A. ^{[1
]}

Raghavachari, Krishnan ^{[1
]}

Flood, Amar H. ^{[1
]}

机构：

[1] Indiana Univ, Dept Chem, 800 E Kirkwood Ave, Bloomington, IN 47405 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 45期

基金：

美国国家科学基金会;

关键词：

anion recognition; bisulfates; hydrogen bonding; macrocycles; supramolecular chemistry; BINDING PROPERTIES; WATER; DIMERIZATION; FORMS; COMPLEXATION; TEMPLATION; NUCLEATION; RECEPTORS;

D O I：

10.1002/anie.201608118

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Contrary to the simple expectations from Coulomb's law, Weinhold proposed that anions can stabilize each other as metastable dimers, yet experimental evidence for these species and their mutual stabilization is missing. We show that two bisulfate anions can form such dimers, which stabilize each other with self-complementary hydrogen bonds, by encapsulation inside a pair of cyanostar macrocycles. The resulting 2:2 complex of the bisulfate homodimer persists across all states of matter, including in solution. The bisulfate dimer's OHO hydrogen bonding is seen in a (HNMR)-H-1 peak at 13.75ppm, which is consistent with borderline-strong hydrogen bonds.

引用

页码：14057 / 14062

页数：6

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