It's that time of the week again...

Steve's piece this week is about stereochemistry, and how it can be indirectly transferred from the periphery of a dendrimer to its catalytic core.

Gav highlights a molecular switch that's used to alter the Lewis acidity of a boron compound, by virtue of cross conjugation.

Cross conjugation also features strongly in the final highlight, because it seems that the simple rules for electron transfer don't work for cross-conjugated systems.

Although it's nice to see chemistry getting a prominent mention in this Daily Telegraph article, we're a little concerned about the phrase 'the chicken molecule'! Other things that we've found on the net this week include 'science facebook' and possibly the best online periodic table — what's your site of choice?

Neil

Neil Withers (Associate Editor, Nature Chemistry)