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, result...

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Bibliographic Details
Main Authors: Shuo Zhang, Andreas Fischer
Format: Article
Language:English
Published: International Union of Crystallography 2011-12-01
Series:Acta Crystallographica Section E
Online Access:http://scripts.iucr.org/cgi-bin/paper?S1600536811047532