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Expanding the Pyridine-Formic Acid Cocrystal Landscape under Extreme Conditions

Lookup NU author(s): Rachael Lee, Andrew Firbank, Professor Mike ProbertORCiD


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Pyridine and formic acid have been crystallized at differing ratios by both cryocrystallization and compression in a diamond anvil cell. Mixtures of the liquids in 1:1, 1:2, and 1:4 ratios all crystallize at high pressure, while only the 1:1 and 1:4 compositions were crystallized by in situ low temperature capillary crystallization. The 1:2 structure crystallized by high pressure is a previously unknown cocrystal of pyridine-formic acid. For the 1:4 mixture, a new polymorph has been identified at a pressure of 14.2 kbar with a distinctly different structure and bonding pattern to that of the previously reported low temperature form.

Publication metadata

Author(s): Lee R, Firbank AJ, Probert MR, Steed JW

Publication type: Article

Publication status: Published

Journal: Crystal Growth and Design

Year: 2016

Volume: 16

Issue: 7

Pages: 4005-4011

Print publication date: 06/07/2016

Online publication date: 01/06/2016

Acceptance date: 02/04/2016

ISSN (print): 1528-7483

ISSN (electronic): 1528-7505

Publisher: American Chemical Society


DOI: 10.1021/acs.cgd.6b00544


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