Coordination-Driven Orthogonal Ligand Pairings through Dual Hydrogen-Bonding/π-π Interaction Complementarity

Area of Science:

• Coordination Chemistry
• Supramolecular Chemistry

Background:

• Controlled molecular complexity is crucial in chemistry.
• Orthogonal recognition strategies offer precise control over molecular assembly.

Purpose of the Study:

• To report novel heteroleptic palladium(II) complexes.
• To demonstrate multi-layered and orthogonal recognition for controlled molecular assembly.

Main Methods:

• Synthesis of heteroleptic palladium(II) complexes.
• Investigation of ligand pairing using hydrogen bonding and pi-pi interactions.
• Assessment of complex stability and orthogonality during assembly.

Main Results:

• Achieved high complementarity in ligand pairing through combined hydrogen bonding and pi-pi interactions.
• Demonstrated orthogonality between different heteroleptic complex pairs.
• Showcased the ability to combine different complexes without significant scrambling or mismatching.

Conclusions:

• Multi-layered and orthogonal recognition is a viable strategy for building molecular complexity.
• Palladium(II) complexes with tailored recognition domains enable predictable and stable molecular assemblies.
• This approach facilitates the modular construction of complex molecular architectures.