August 2008 issue
Cover illustration: (S)-(+)-Ketamine hydrochloride is a well known anesthetic compound and is dramatically more potent than its R isomer. The packing of ions is stabilized by an infinite one-dimensional ClH-N-HCl hydrogen-bonding network, involving NH2+ groups as donors and chloride anions as acceptors. See Hakey, Ouellette, Zubieta & Korter [Acta Cryst. (2008), E64, o1487].