Hydrothermal syntheses and characterization of three lanthanide coordination complexes constructed by 2,2＇：6＇,2＇＇-terpyridine and 2,2＇-biphenyldicarboxylic acid

• Published in: Journal of rare earths Vol. 30; no. 3; pp. 256 - 261
• Main Author: 谢洪珍 张燕广 龚丹宇 魏丹毅
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2012; State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
• Subjects: 2,2′-biphenyldicarboxylic acid; crystal structures; fluorescence; lanthanide coordination complexes; rare earths; X射线衍射分析; 三联吡啶; 双核配合物; 水热合成; 表征; 配位聚合物; 铒（Ⅲ）; 镧系元素; fluorescence; lanthanide coordination complexes; crystal structures; 2,2′-biphenyldicarboxylic acid; rare earths; 2,2'-biphenyldicarboxylic acid
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(12)60033-7

Two 1D coordination polymers [Ln2（dpdc）3（tpy）2·H2O]n [Ln=Nd 1, Yb 2, H2dpdc=2,2＇-biphenyldicarboxylic acid and tpy= 2,2＇：6＇,2＇＇-terpyridine] and one dinuclear complex Er2（dpdc）2（Hdpdc）2（tpy）2 3 were obtained via hydrothermal reactions and determined by X-ray diffraction analysis. The crystal structure data of 1 and 2 revealed that two coordination polymers were isostructural and possessed a 1D chain framework consisting of eight-coordinated Ln（III） centers. In the asymmetric unit, the two Er（III） ions in 3 were both nine-coordinated and had similar coordination environments. The Er（III） ions were bridged by dpdc2-ligands into dinuclear structures. The complexes were also characterized by IR spectra and thermogravimetric analysis. The solid fluorescence of 1 and 3 was also investigated at room temperature.