Issue 12, 2025

Facts and reality of multi-component organic ionic-cocrystals of di-topic acid–base conjugates

Abstract

In this study, three ionic-cocrystals of N-((10-chloroanthracen-9-yl)methyl)-3-(1H-imidazolium-1-2yl)propan-1-ammonia (chloroanthraimmida) and 3,5-pyridinedicarboxylic acid (H235pdc) together with and without diiodo-tetrafluorobenzene are described. Variations in the protonation and deprotonation on the parent ditopic acid–base conjugate partners were observed. The energy considerations on different proton-transferred forms and the observed form of three multi-component ionic-cocrystals of di-topic acid–base conjugates revealed that the crystallised forms adopted closely related intermediate forms but with different proton-transferred states of the multi-component ionic-cocrystals. The halogen-bonds were used to construct two compositionally different ionic-cocrystals from the same acid–base conjugate pair.

Graphical abstract: Facts and reality of multi-component organic ionic-cocrystals of di-topic acid–base conjugates

Supplementary files

Article information

Article type
Communication
Submitted
28 Nov 2024
Accepted
25 Feb 2025
First published
03 Mar 2025

CrystEngComm, 2025,27, 1701-1706

Facts and reality of multi-component organic ionic-cocrystals of di-topic acid–base conjugates

A. P. Singh and J. B. Baruah, CrystEngComm, 2025, 27, 1701 DOI: 10.1039/D4CE01200C

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