Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1099, Issue -, Pages 516-522Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molstruc.2015.07.008
Keywords
Synthon; Charge-assisted; CAB cocrystal; Carboxylic acid
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Funding
- Fujian Provincial Overseas Scholarship and Research Project for Young and Middle-aged Faculty of Fujian Province [JA14250]
- NSF-MRI Award [CHE-1229400]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1229400] Funding Source: National Science Foundation
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Using three carboxylic acids, we show that the COOH center dot center dot center dot COO- synthon is robust for directing the co-crystallization between a carboxylic acid and a carboxylate of either the same or a chemically different molecule to form a CAB or pseudo CAB cocrystal, respectively. For a given carboxylic acid and a counterion, only one salt could be prepared. However, additional one CAB cocrystals and two pseudo CAB cocrystals could be prepared based on the COOH center dot center dot center dot COO- synthon. The same synthon has the potential to enable the preparation of additional molecular pseudo CAB cocrystals using other chemically distinct carboxylic acids. This significantly increased number of solid forms highlights the values of charge-assisted synthons, such as COOH center dot center dot center dot COO-, in crystal engineering for expanding the range of material properties of a given molecule for optimum performance in product design. (C) 2015 Elsevier B.V. All rights reserved.
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