Back Cover: Methanol‐Triggered Vapochromism Coupled with Solid‐State Spin Switching in a Nickel(II)‐Quinonoid Complex (Angew. Chem. Int. Ed. 9/2017)

A methanol‐selective vapochromic response is realized in a nickel(II) quinonoid complex, which exhibits a reversible structural transformation including a coordination geometrical change between the square‐planar and octahedral structure by the uptake and removal of methanol vapor. In their Communication on page 2345 ff. M. Kato and co‐workers show that this process is accompanied by a remarkable color change as well as spin‐state switching in the solid state under ambient conditions.