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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)

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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.
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hydrogen, site, metalцorganic, strategia, high, 302005, storage, microporous, int, framework, cover, angel, open, chem, metali, adsorption, picture
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