Sathishkumar, Ranganathan and Mahapatra, Sudarshan and Thakur, Tejender S and Desiraju, Gautam R (2010) Dimorphism and structural modulation in quinoxaline. In: Current Science (Bangalore), 99 (12). pp. 1807-1811.
|
PDF
Dimorphism.pdf - Published Version Download (306kB) |
Abstract
The Z' = 1 and Z' = 5 structures of quinoxaline are compared. The nature of the intermolecular interactions in the Z' = 5 structure is studied by means of variable-temperature single-crystal X-ray diffraction. The C-H center dot center dot center dot N and pi ... pi it interactions in these structures are of a stabilizing nature. The high Z' structure has the better interactions, whereas the low Z' structure has the better stability. This trade-off is a recurrent theme in molecular crystals and is a manifestation of the distinction between thermodynamically and kinetically favoured crystal forms.
Item Type: | Journal Article |
---|---|
Publication: | Current Science (Bangalore) |
Publisher: | Indian Academy of Sciences |
Additional Information: | Copyright of this article belongs to Indian Academy of Sciences. |
Keywords: | Crystal structure and engineering;cryocrystallization; hydrogen bond;polymorphism |
Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
Date Deposited: | 07 Apr 2011 10:09 |
Last Modified: | 07 Apr 2011 10:09 |
URI: | http://eprints.iisc.ac.in/id/eprint/36037 |
Actions (login required)
View Item |