Conformation Directed Interaction Anisotropy Leading to Distinct Bending Behaviors of Two ROY Polymorphs

Manish Kumar Mishra, Changquan Calvin Sun

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Two conformational polymorphs of 5-methyl-2-[(2-nitrophenyl)amino]-3-thiophenecarbonitrile (ROY) exhibited similar morphology but strikingly different mechanical flexibility, where the yellow needle (YN) is exceptionally elastic while orange needle (ON) is highly brittle. Similar to color differentiation, the distinct bending behaviors of YN and ON polymorphs are linked to different molecular conformations. Aided by crystal structural analysis, interaction energies, topology, nanoindentation, and elastic constant calculation, this study reveals new structural insights that explain the strikingly different mechanical behaviors of the two polymorphs.

Original languageEnglish (US)
Pages (from-to)4764-4769
Number of pages6
JournalCrystal Growth and Design
Volume20
Issue number7
DOIs
StatePublished - Jul 1 2020

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