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Organic Salts of p-Coumaric Acid and Trans-Ferulic Acid with Aminopicolines

Organic Salts of p-Coumaric Acid and Trans-Ferulic Acid with Aminopicolines

Authors :
Sosthene Nyomba Kamanda
Ayesha Jacobs
Source :
Molecules, Vol 25, Iss 3, p 751 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

p-Coumaric acid (pCA) and trans-ferulic acid (TFA) were co-crystallised with 2-amino-4-picoline (2A4MP) and 2-amino-6-picoline (2A6MP) producing organic salts of (pCA−)(2A4MP+) (1), (pCA̶ )(2A6MP+) (2) and (TFA̶ )(2A4MP+)·( 3 2 H2O) (3). For salt 3, water was included in the crystal structure fulfilling a bridging role. pCA formed a 1:1 salt with 2A4MP (Z’ = 1) and a 4:4 salt with 2A6MP (Z’ = 4). The thermal stability of the salts was determined using differential scanning calorimetry (DSC). Salt 2 had the highest thermal stability followed by salt 1 and salt 3. The salts were also characterised using Fourier transform infrared (FTIR) spectroscopy. Hirshfeld surface analysis was used to study the different intermolecular interactions in the three salts. Solvent-assisted grinding was also investigated in attempts to reproduce the salts.

Details

Language :
English
ISSN :
14203049
Volume :
25
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
edsdoj.6323df6203d54a55b8651e0b456ad653
Document Type :
article
Full Text :
https://doi.org/10.3390/molecules25030751