May 2010 issue
Cover illustration: The pendant chlorobenzene and phenyl rings in C22H14ClN3 adopt a parallel orientation, suggesting that they interact by way of weak intramolecular aromatic - stacking. The resulting conformation may be significant in determining the antihelminitic activity of this and related compounds. See Khan, Manivel, Prabakaran, Hathwar & Akkurt [Acta Cryst. (2010). E66, o1094].