Two Picolinamide-Based Zn(II) Coordination Polymers: Syntheses, Structures, and Catalytic Activities

Abstract

Two picolinamide-based zinc(II) coordination polymers {[Zn(SO₄)(3-bpit) (CH₃OH)₂]·2CH₃OH}_n (1)(3-bpit = N,N’-bis(3-pyridylformyl)imidazolidine-2-thione) and [Zn(SCN)₂(4-bpit)]_n (2) (4-bpit = N,N’-bis(4-pyridylformyl)imidazolidine -2-thione) have been synthesized and structurally characterized. In complexes 1 and 2, the picolinamide-based ligands, 3-bpit and 4-bpit, function as bridging bidentate mode, leading to polymeric structures. Complex 1 is a two-dimensional coordination polymer while 2 exhibits a one-dimensional chain structure. The hydrolysis of 4-nitrophenyl acetate catalyzed by complexes 1 and 2 under mild conditions was also investigated.

Keywords:

• catalytic activity
• hydrolysis
• picolinamide
• polymers
• structure
• zinc(II)

Acknowledgments

The authors gratefully acknowledge the financial support by the National Natural Science Foundation of China (Nos. 20801048 and 20971110) and the Basic Research Program of Henan Province (2008A150025).