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Published on: July 4, 2016
Effect of solvent polarity in mechanochemistry: preparation of a conglomerate vs. racemate
Kashyap Kumar Sarmah1, Trishna Rajbongshi, Achyut Bhuyan
1Department of Chemistry, Gauhati University, Guwahati 781014, India. ranjit.thakuria@gauhati.ac.in ranjit.thakuria@gmail.com.
Abstract:
Cocrystallization of racemic dl-tartaric acid (dl-ta) and achiral isoniazid (ISN) was investigated using mechanochemistry. Neat grinding (NG) and liquid-assisted grinding (LAG) in the presence of non-polar liquids result in the formation of a conglomerate (ISN·d-ta/ISN·l-ta); whereas LAG with polar liquids yields racemic salt ISN·dl-ta. The effect of solvent polarity and dipole moment in mechanochemistry is discussed.
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