Unprecedented Pyrazine‐Bridged Guanidinate Rare Earth Complexes Through a Bridge Splitting Reaction Path

The Cover Feature shows a desert landscape in which the pyrazine-bridged dinuclear guanidinate rare earth complex illuminates the night sky. The molecule resides on a cube whose faces feature spectroscopy and cyclic voltammetry as analysis tools. The crystals further indicate that crystalline material was obtained and studied via single-crystal X-ray diffraction to unambiguously identify the structure of the molecule. An unprecedented bridge splitting reaction is discussed herein, which shifts chloride anions in favor of a bridging neutral pyrazine. This type of reaction may represent a powerful strategy to isolate higher nuclearity species in the future. DFT methods provided insight into the mechanism of formation. More information can be found in the Research Article by F. Delano IV and S. Demir.