Mittapalli, Sudhir and Perumalla, D Sravanakumar and Nangia, Ashwini (2017) Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals. In: IUCRJ, 4 . pp. 243-250.
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Polymorphs of the dichloro derivative of N-salicylideneaniline exhibit mechanical responses such as jumping (Forms I and III) and exploding (Form II) in its three polymorphs. The molecules are connected via the amide N-H center dot center dot center dot O dimer synthon and C-Cl center dot center dot center dot O halogen bond in the three crystal structures. A fourth high-temperature Form IV was confirmed by variable-temperature single-crystal X-ray diffraction at 180 degrees C. The behaviour of jumping exhibited by the polymorphic crystals of Forms I and III is due to the layered sheet morphology and the transmission of thermal stress in a single direction, compared with the corrugated sheet structure of Form II such that heat dissipation is more isotropic causing blasting. The role of weak C-Cl center dot center dot center dot O interactions in the thermal response of molecular crystals is discussed.
| Item Type: | Journal Article |
|---|---|
| Publication: | IUCRJ |
| Additional Information: | Copy right for this article belongs to the INT UNION CRYSTALLOGRAPHY, 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND |
| Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
| Date Deposited: | 03 Jun 2017 09:36 |
| Last Modified: | 03 Jun 2017 09:36 |
| URI: | http://eprints.iisc.ac.in/id/eprint/57095 |
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