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.

中文翻译：

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2-(1H-tetrazol-1-yl) 乙酸配合物的合成、晶体结构和性质

基于 2-(1H-tetrazol-1-yl) 乙酸 (Htza) 和 Ln(III) 盐 La(NO)3·6H2O、PrCl3·6H2O 和 NdCl3·6H2O 制备了三种新的配合物。它们的晶体结构已通过单晶 X 射线晶体学表征。在每种情况下，四唑配体通过来自羧酸根部分的氧而桥接和螯合-桥接连接 Ln(III) 离子。因此形成了无限的一维配位聚合物。此外，研究了配合物的固态紫外光谱。