Front Cover: Flexible NO2-Functionalized N-Heterocyclic Carbene Monolayers on Au (111) Surface (Chem. Eur. J. 66/2019) The reorientation of the surface-anchored molecules from tilted into flat-lying position was triggered by exposure of the sample to reducing conditions that facilitated reduction of the chemically active nitro groups. The reorientation of the surface-anchored molecules from tilted into flat-lying position was triggered by exposure of the sample to reducing conditions that facilitated reduction of the chemically active nitro groups.