Syntheses, crystal structures, and properties of 2-(1H-tetrazol-1-yl) acetic acid complexes

Abstract

Three new complexes have been prepared based on 2-(1H-tetrazol-1-yl) acetic acid (Htza) and the Ln(III) salts La(NO)₃ · 6H₂O, PrCl₃ · 6H₂O, and NdCl₃ · 6H₂O. Their crystal structures have been characterized by single crystal X-ray crystallography. In each instance, the tetrazole ligand is both bridging and chelating-bridging connecting Ln(III) ions via the oxygens from carboxylate moieties. Thus infinite 1-D coordination polymers are formed. In addition, solid state UV spectra of the complexes are investigated.

Keywords:

• Ln(III) complexes
• Crystal structure
• UV properties

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos 90610001 and 20871106), the China National Key Basic Research Special Funds (No. 2009CB220005 and No. 2006CB708407), and the Energy and Technology Program from Zhengzhou University.