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

Wen-Qing Sun; Jin Tong; Hong-Lin Lu; Ting-Ting Ma; Hong-Wei Ma; Shu-Yan Yu

doi:10.1002/asia.201701766

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

Chem Asian J. 2018 May 4;13(9):1108-1113. doi: 10.1002/asia.201701766. Epub 2018 Apr 14.

Authors

Wen-Qing Sun¹, Jin Tong¹, Hong-Lin Lu¹, Ting-Ting Ma¹, Hong-Wei Ma², Shu-Yan Yu¹

Affiliations

¹ Beijing Key Laboratory for Green Catalysis and Separation, Laboratory for Self-Assembly Chemistry, Department of Chemistry and Chemical Industry, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China.
² School of Chemistry, Beijing Institute of Technology University, Beijing, 100876, China.

PMID: 29424963
DOI: 10.1002/asia.201701766

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.

Keywords: chain structures; cross-coupling; heterometallic catalysis; self-assembly; supramolecular chemistry.