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Constraining Homo- and Heteroanion Dimers in Ultraclose Proximity within a Self-Assembled Hexacationic Cage by Hongye Wang; Shuai Fang; Guangcheng Wu; Ye Lei; Qiong Chen; Hongliang Wang; Yating Wu; Chuhao Lin; Xin Hong; Sung Kuk Kim; Jonathan L. Sessler; Hao Li is a Chemistry article available to read on EtoBox.

What is Constraining Homo- and Heteroanion Dimers in Ultraclose Proximity within a Self-Assembled Hexacationic Cage about?

A hexacationic cage was synthesized via hydrazone condensation in aqueous acid. Cage bears three biscationic arms, each of which contains four relatively acidic protons, including one NH and three CH protons. These hydrogen bond donors, as well as its intrinsic cationic nature, enable cage 3 to encapsulate two anions concurrently within its cavity. The axial asymmetrical nature of the biscationic arms allow the cage to recognize two different anions in a selective manner, to encompass bound heteroanion dimers, such as Cl·NO3 and Cl·Br. Single crystal X-ray diffraction analyses reveal that in the solid state the two anions are constrained in ultraclose proximity within the cage; e.g., the Cl···Cl and Cl···Br distances are 3.2 and 2.9 Å, respectively, which are shorter than the sum of their van der Waals radii. Evidence consistent with the sequential binding of two identical or disparate anions in CDCN is also presented.

Who reads Constraining Homo- and Heteroanion Dimers in Ultraclose Proximity within a Self-Assembled Hexacationic Cage?

Author

Hongye Wang; Shuai Fang; Guangcheng Wu; Ye Lei; Qiong Chen; Hongliang Wang; Yating Wu; Chuhao Lin; Xin Hong; Sung Kuk Kim; Jonathan L. Sessler; Hao Li

Publisher

American Chemical Society; American Chemical Society (ACS); Research Square (ISSN 0002-7863)

Published

2020

Language

EN

Field

Chemistry (Physical Sciences)