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Title: Cyclotris(paraquat‐ p ‐phenylenes)

Journal Article · · Angewandte Chemie
ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
  2. Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA, Institute for Molecular Design and Synthesis Tianjin University 92 Weijin Road Tianjin 300072 China, School of Chemistry University of New South Wales Sydney NSW 2052 Australia

Abstract Reported here is the synthesis, solid‐state characterization, and redox properties of new triangular, threefold symmetric, viologen‐containing macrocycles. Cyclotris(paraquat‐ p ‐phenylene) ( CTPQT 6+ ) and cyclotris(paraquat‐ p ‐1,4‐dimethoxyphenylene) ( MCTPQT 6+ ) were prepared and their X‐ray single‐crystal (super)structures reveal intricate three‐dimensional packing. MCTPQT 6+ results in nanometer‐sized channels, in contrast with its parent counterpart CTPQT 6+ which crystallizes as a couple of polymorphs in the form of intercalated assemblies. In the solid state, MCTPQT 3(.+) exhibits stacks between the 1,4‐dimethoxyphenylene and bipyridinium radical cations, providing new opportunities for the manipulation and control of the recognition motif associated with viologen radical cations. These redox‐active cyclophanes demonstrate that geometry‐matching and weak intermolecular interactions are of paramount importance in dictating the formation of their intricate solid‐state superstructures.

Sponsoring Organization:
USDOE
Grant/Contract Number:
NONE; FG02-08ER15967
OSTI ID:
1559396
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 39 Vol. 131; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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