Noncovalent bonding: Stacking interactions of chelate rings of transition metal complexes

Analysis of crystal structure data deposited in the Cambridge Structural Database (CSD) has shown that aromatic rings tend to stack with square planar transition metal complexes when they contain chelate rings. In these interactions, the orientation between chelate and aryl ring is a parallel-displaced orientation, like stacking interactions between aromatic molecules. In fused systems containing chelate and aryl rings, the aryl rings prefer to...