Key points are not available for this paper at this time.
A third form of benzamide has been characterized 175 years after the first report of polymorphism in benzamide; the metastable silky needlelike form first described by Wöhler and Liebig was “hidden” for so long owing to the similarities between the metrics of its unit cell and those of the stable form I (the H-bonding motif is depicted). Selective crystallization techniques taking advantage of modern online sensors were crucial in this work. Supporting information for this article is available on the WWW under http: //www. wiley-vch. de/contents/jc₂002/2007/z701383ₛ. pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Thun et al. (Mon,) studied this question.