A series of 3D lanthanide complexes based on H bond and halogen-halogen interactions: Synthesis, structure, spectroscopic and thermal properties

作者：Wu Junchen; Li Hua; Ren Ning^*; Zhang Jianjun^*; Wang Shuping

来源：Journal of Rare Earths, 2016, 34(11): 1083-1088.

DOI：10.1016/S1002-0721(16)60138-2

• lanthanide complexes
• crystal structure
• supramolecular
• H bond
• halogen-halogen interactions
• luminescent property
• TG/DSC
• rare earths

Four lanthanide coordination complexes, namely, [Ln(2,3-DClBA)(3)(5,5'-dmebipy)(H2O)](2)(Ln= Sm(1), Eu(2), Dy(3), Ho(4)); 2,3-DClBA=2,3-dichlorobenzoate; 5,5'-dmebipy= 5,5'-dmethylbipyridine) were synthesized and characterized by elemental analysis, infrared spectroscopy and single crystal X-ray diffraction. Findings indicated that complex 3 was a dinuclear molecule, and the center Dy3+ was eight-coordinated. Each dinuclear units could be connected by H bond and halogen-halogen interactions. Luminescent property of complex 2 suggested the typical intense emissions of Eu3+ ions. Thermal analysis showed that the complexes decomposed in three steps: the coordination water was lost firstly then the neutral ligand 5,5'dmebipy was lost and lastly the 2,3-DClBA ligand was lost.

• 出版日期2016-11
• 单位石家庄学院; 邯郸学院; 河北师范大学