Journal
CHEMICAL PHYSICS LETTERS
Volume 630, Issue -, Pages 44-50Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2015.04.024
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Funding
- Department of Chemistry at Michigan Technological University
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The elastic and mechanical properties of the most stable polymorphs of aspirin and paracetamol are obtained at B3LYP-D2* level of theory to show how effects arising from volumetric expansions related to thermal variations influence the behavior of these materials. Results are in fair agreement with experimental values reported at temperatures far from 0 K, showing that the proposed approach can describe the elastic response of molecular crystals as rationalized in terms of inter-molecular forces. The computational approach, despite its semi-empirical nature, allows achieving a qualitative chemical understanding of the macroscopic mechanical properties of molecular crystals with respect to changes in temperature. (C) 2015 Elsevier B.V. All rights reserved.
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