A monoclinic polymorph of theophylline
A monoclinic polymorph of theophylline, C7H8N4O2, has been obtained from a chloroform/methanol mixture by evaporation under ambient conditions. The new polymorph crystallizes with two molecules in the asymmetric unit. The structure features intermolecular N—H⋯O hydrogen bonds, resulting in the fo...
| Main Authors: | , |
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| Format: | Online |
| Language: | English |
| Published: |
International Union of Crystallography
2011
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3239002/ |