Additions and corrections

N-Heterocyclic carbene containing element organic frameworks as heterogeneous organocatalysts

Marcus Rose, Andreas Notzon, Maja Heitbaum, Georg Nickerl, Silvia Paasch, Eike Brunner, Frank Glorius and Stefan Kaskel

Chem. Commun., 2011, DOI: 10.1039/c1cc10268k Amendment published 23 March 2011

The last sentence of the second paragraph on Page 1 should be replaced with the following:
To our knowledge, no results have been published so far, dealing with heterogeneous imidazolium-based NHC-compounds and their application in metal-free organocatalysis.²

Also, an additional reference citation should be included after this sentence corresponding to the following reference:
For the immobilization of imidazolium-based and other NHCs on soluble polymeric support and successful application in organocatalysis, see: K. Zeitler and I. Mager, Adv. Synth. Catal., 2007, 349, 1851–1857.

The Royal Society of Chemistry apologises for this error and any consequent inconvenience to authors and readers.

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