July 2014 issue
Cover illustration: The alkyne dicobalt clusters [Co2(C8H11BrO3)(CO)6] and [Co2(C12H16Br2O4)(CO)6] feature asymmetric (illustrated) or symmetric alkynes, classic tetrahedral C2Co2 cluster cores, with each carbon atom of the alkyne bridging two Co atoms, and highly distorted octahedral geometries. Inversion dimers are found in the crystal structure of the asymmetric cluster mediated by hydroxyl-O-HO(hydroxyl) hydrogen bonds. See: McAdam, Moratti, Robinson, Simpson & Stanley [Acta Cryst. (2014). E70, 9-13].