Cover Picture: Neutron and X-ray Diffraction and Spectroscopic Investigations of Intramolecular [CH⋅⋅⋅FC] Contacts in Post-Metallocene Polyolefin Catalysts: Modeling Weak Attractive Polymer-Ligand Interactions (Chem. Eur. J. 9/2006)

The Tsing Ma Bridge in Hong Kong is the world's longest road‐and‐rail suspension bridge. The CH⋅⋅⋅FC interaction or ‘hydrogen bridge’ is one of the weakest and most controversial hydrogen bonds to be proposed. As described in their Full Paper on page 2607 ff., M. C. W. Chan, J. M. Cole et al. have investigated the CH⋅⋅⋅FC contacts in a post‐metallocene catalyst by means of a neutron diffraction study, multinuclear NMR spectroscopy, and DFT calculations. Excellent activities and high co‐monomer incorporations for olefin polymerization have been observed.