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 we...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.展开更多
基金Project supported by the Nonprofit Technology & Research in Zhejiang (2011C37010)sponsored by the K.C.Wong Magna Fund in Ningbo University, the Ningbo Municipal Natural Science Foundation (2010A610160),the Subject Object (xk1070) and Foundation (20111045) of Ningbo University
文摘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.
