Two new Cd(II) coordination polymers based on distinct second building blocks: Syntheses, structures, and luminescent properties

ABSTRACT

Two new Cd(II) coordination polymers, namely {Cd₃(pbdc)₃(DMF)₄}_n (1) and {Cd₂(mbdc)₂(H₂O)(DMF)₂}_n (2) (H₂pbdc  =  terephthalic acid, H₂mbdc  =  isophthalic acid, DMF  =  N,N’-dimethylformamide), have been successfully synthesized via the solvothermal reactions of Cd(II) ions and terephthalic acid or isophthalic acid ligand. Single-crystal X-ray structural analysis reveals that compound 1 features a 2D layered framework based on trinuclear [Cd₃(COO)₆] clusters as building subunits, and compound 2 features a 2D layered structure with dinuclear [Cd₂(COO)₃] clusters as building subunits. In addition, the luminescent properties of 1 and 2 were also investigated at room temperature.

KEYWORDS:

• Cd(II) compounds
• solvothermal synthesis
• 2D layer
• luminescence

Funding

The authors acknowledge financial support of Guangdong University of Petrochemical Technology.