Munshi, Parthapratim ; Venugopala, K. N. ; Jayashree, B. S. ; Guru Row, Tayur N. (2004) Concomitant polymorphism in 3-acetylcoumarin: role of weak C-H···O and C-H···π interactions Crystal Growth & Design, 4 (6). pp. 1105-1107. ISSN 1528-7483
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Official URL: http://pubs.acs.org/doi/abs/10.1021/cg049948l
Related URL: http://dx.doi.org/10.1021/cg049948l
Abstract
An analysis of structural features associated with polymorphism in 3-acetylcoumarin has been made in terms of morphology, infrared spectroscopy, crystal structure, powder X-ray diffraction, and differential scanning calorimetric measurements. The appearance of concomitant polymorphs is found to depend on the crystallization temperature in the 1:1 chloroform/hexane solvent system. C-H···O and C-H···π interactions stabilize one form in a head to head configuration, while only C-H···O interactions stabilize the other in a head to tail configuration of the molecules in the crystal lattice.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 12081 |
| Deposited On: | 10 Nov 2010 04:43 |
| Last Modified: | 02 Jun 2011 12:02 |
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