Programmable Self‐Assembly of Heterometallic Palladium(II)–Copper(II) 1D Grid‐Chain using Dinuclear Palladium(II) Corners with Pyrazole–Carboxylic Acid Ligands

Abstract

A novel heterometallic diPd^II -diCu^II grid-chain, {[(bpy)₄ Pd₄ Cu₂ L₄ ](NO₃ )₄ }_n (2; bpy=2,2'-bipyridine), was synthesized through a programmable self-assembly approach from the molecular corners [(bpy)₂ Pd₂ (HL)(L)](NO₃ ) (1) as linkers with Cu^II nitrate by using the bifunctional H₂ L ligand featuring primary (pyrazole) and secondary (benzoic acid) groups. Structural analysis revealed that 1D structure 2 consists of one [Cu₂ (O₂ CPh)₄ ]_n unit as a bridge and two [(bpy)₂ Pd₂ L₂ ]_n corners. Additionally, the catalytic effect of the heterometallic synergy on the Suzuki coupling reaction by using 2 was further explored.