Munshi, Parthapratim and Venugopala, KN and Jayashree, BS and Row, Tayur Guru N (2004) Concomitant Polymorphism in 3-Acetylcoumarin: Role of Weak C-H \cdot\cdot\cdot O and C-H \cdot\cdot\cdot \pi Interactions. In: Crystal Growth and Design, 4 (6). pp. 1105-1107.Full text not available from this repository. (Request a copy)
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 \cdot\cdot\cdot O and C-H\cdot\cdot\cdot \pi interactions stabilize one form in a head to head configuration, while only C-H\cdot\cdot\cdot O interactions stabilize the other in a head to tail configuration of the molecules in the crystal lattice.
|Item Type:||Journal Article|
|Additional Information:||The copyright for this article belongs to American Chemical Society.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||26 Oct 2005|
|Last Modified:||27 Aug 2008 11:30|
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