Cover Picture Strategies for Hydrogen Storage in MetalЦOrganic Frameworks High H2 Adsorption in a Microporous MetalЦOrganic Framework with Open Metal Sites (Angew. Chem. Int. Ed. 302005)код для вставкиСкачать
Cover Picture Jesse L. C. Rowsell and Omar M. Yaghi* Hydrogen storage strategies for metal–organic frameworks have been developed recently to enhance their applicability in this role, as shown in the cover picture. In their Minireview on page 4670 ff., O. M. Yaghi and J. L. C. Rowsell discuss the various approaches used to reach the required compromise between high porosity and smaller pore size for stronger binding of H2 under ambient conditions. In their Communication on page 4745, B. Chen, O. M. Yaghi, and co-workers report a promising hydrogen-storage material with open metal sites. Aldol Reactions In their Review on page 4682 ff., S. E. Denmark et al. explore the scope and limitations of the catalytic, enantioselective, vinylogous aldol reaction, in which dienolates derived from g-enolizable a,b-unsaturated carbonyl compounds are added to aldehydes. Pharmaceutically Active “Prils” Chiral building blocks for the synthesis of these angiotensin-converting-enzyme inhibitors can be produced on a large scale. Their application in the structure-guided redesign of the active site of almond (R)-PaHNL5 is discussed by K. Gruber, A. Glieder, and co-workers in their Communication on page 4700 ff. No Pressure The coupling of propylene to generate benzene at 70 8C and atmospheric pressure is discussed by E. W. McFarland and co-workers in the Communication on page 4735 ff. The selectivity of the benzene formation depends on the size of the Pd0 cluster and on the presence of hydrogen and oxygen.