April 2012 issue
Cover illustration: The compound C42H28O2·C3H6O arose from the room-temperature, sunlight-catalysed, photo-oxygenation of rubrene dissolved in acetone. The C atoms of the oxygenated ring adopt a boat conformation and the dihedral angle between the benzene ring and naphthalene ring system of the tetracene unit is 49.21 (6)°. In the crystal, the components are linked by C-HO hydrogen bonds. See Shinashi & Uchida [Acta Cryst. (2012). E68, o995-o996].