Organic molecular tessellations and intertwined double helices assembled by halogen bonding

Chun-Fai Ng; Hak-Fun Chow; Thomas C. W. Mak

doi:10.1039/C8CE02133C

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Organic molecular tessellations and intertwined double helices assembled by halogen bonding†

Chun-Fai Ng,

^a Hak-Fun Chow

^b and Thomas C. W. Mak

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, P. R. China
E-mail: tcwmak@cuhk.edu.hk

^b Department of Chemistry, Institute of Molecular Functional Materials, and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, P. R. China

Abstract

Isomeric 2,5- and 2,6-bis(iodoethynyl)pyrazine have been employed to assemble single-component polygonal molecular tessellations and intertwined double helices via intermolecular ethynyl C—I⋯N halogen bonding. X-ray crystallography elucidated the 3D supramolecular architectures of five ditopic heteroaromatic polymorphs obtainable via crystallization in various organic solvents.

This article is part of the themed collections: Halogen Bonding in Crystal Engineering Editor’s collection and 1st International Conference on Noncovalent Interactions

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DOI: https://doi.org/10.1039/C8CE02133C
Article type: Paper
Submitted: 18 Tsh 2018
Accepted: 09 Phe 2019
First published: 11 Phe 2019

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CrystEngComm, 2019,21, 1130-1136

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Organic molecular tessellations and intertwined double helices assembled by halogen bonding

C. Ng, H. Chow and T. C. W. Mak, CrystEngComm, 2019, 21, 1130 DOI: 10.1039/C8CE02133C

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Organic molecular tessellations and intertwined double helices assembled by halogen bonding†

Abstract

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Organic molecular tessellations and intertwined double helices assembled by halogen bonding

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