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RESEARCH ARTICLE
Contents Vol 61(4)

New Coordination Polymers of Lanthanide(iii) with Tetrazole-1-acetic Acid: Synthesis, Crystal Structures, and Magnetic Properties

Xiu-Qing Zhang A B , Qing Yu A , He-Dong Bian A , Shi-Ping Yan B , Dai-Zheng Liao B , Wen Gu B and Hong Liang A B C
+ Author Affiliations
- Author Affiliations

A College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin, Guangxi, 541004, P. R. China.

B College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.

C Corresponding author. Email: gxnuchem312@yahoo.com.cn

Australian Journal of Chemistry 61(4) 303-309 https://doi.org/10.1071/CH07439
Submitted: 20 December 2007  Accepted: 15 March 2008   Published: 24 April 2008

Abstract

New coordination polymers {[Ln(tza)3(H2O)2]·mH2O}n (Ln = LaIII 1 and PrIII 2, m = 2; Ln = NdIII 3, m = 1.5) and {[Sm2(tza)6(H2O)5]·H2O}n 4 (Htza = tetrazole-1-acetic acid) have been synthesized and characterized by IR spectroscopy, elemental analysis, X-ray crystallography, and magnetic measurements. The Htza ligand coordinates to the lanthanide cations through the carboxylate group in a monodentate, bridging bidentate coordination mode or bridging tridentate to two metal centres. Complexes 1 and 2 are isostructural. Complex 3 has a similar structure to 1 and 2, but the arrangement of ligands has changed. Complex 4 consists of two types of metallic molecules. Magnetic measurements show weak antiferromagnetic coupling between the metal centres in complexes 2 and 3.


Acknowledgements

We gratefully acknowledge the Science Foundation of Guangxi, China, the Youth Science Foundation of Guangxi, and the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education Institutions of MOE, China.


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