Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals
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...O dimer synthon and C—Cl...O halogen bond in the three crystal structures. A...
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International Union of Crystallography
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doaj-0e458d237e38437c839f8f2d908fb4ec2020-11-24T21:49:58ZengInternational Union of CrystallographyIUCrJ2052-25252017-05-014324325010.1107/S2052252517004043lq5003Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystalsSudhir Mittapalli0D. Sravanakumar Perumalla1Ashwini Nangia2School of Chemistry, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500 046, IndiaDepartment of Inorganic and Physical Chemistry, Indian Institute of Science, Bengaluru, IndiaSchool of Chemistry, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500 046, IndiaPolymorphs 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...O dimer synthon and C—Cl...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°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...O interactions in the thermal response of molecular crystals is discussed.http://scripts.iucr.org/cgi-bin/paper?S2052252517004043polymorphismhalogen bondingmaterials sciencecrystal engineeringintermolecular interactionsmechanochemistrycrystal designhydrogen bonding |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sudhir Mittapalli D. Sravanakumar Perumalla Ashwini Nangia |
spellingShingle |
Sudhir Mittapalli D. Sravanakumar Perumalla Ashwini Nangia Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals IUCrJ polymorphism halogen bonding materials science crystal engineering intermolecular interactions mechanochemistry crystal design hydrogen bonding |
author_facet |
Sudhir Mittapalli D. Sravanakumar Perumalla Ashwini Nangia |
author_sort |
Sudhir Mittapalli |
title |
Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals |
title_short |
Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals |
title_full |
Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals |
title_fullStr |
Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals |
title_full_unstemmed |
Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals |
title_sort |
mechanochemical synthesis of n-salicylideneaniline: thermosalient effect of polymorphic crystals |
publisher |
International Union of Crystallography |
series |
IUCrJ |
issn |
2052-2525 |
publishDate |
2017-05-01 |
description |
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...O dimer synthon and C—Cl...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°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...O interactions in the thermal response of molecular crystals is discussed. |
topic |
polymorphism halogen bonding materials science crystal engineering intermolecular interactions mechanochemistry crystal design hydrogen bonding |
url |
http://scripts.iucr.org/cgi-bin/paper?S2052252517004043 |
work_keys_str_mv |
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