Crystal structure and luminescent properties of Ca(II)-Gd(III) heterometal tetranuclear complexes
WANG Yang， YE Fabing， ZHU Lihong， CHEN Yanmei
Hubei Key Laboratory for Processing and Application of Catalytic Materials， College of Chemistry and Chemical Engineering， Huanggang Normal University， Huanggang， Hubei 438000， China
Abstract：A heterometal tetranuclear complex [Gd2(pydc)6Ca2(H2O)10]·2Him·6H2O (1， H2pydc＝pyridine-2,6-dicarboxylic acid， Him＋＝protonated imidazole) was synthesized by hydrothermal reaction of pyridine-2,6-dicarboxylic acid with CaCl2 and Gd(NO3)3·6H2O at 120 ℃ for 72 h. The structure of the was characterized by X-ray single crystal diffraction， infrared spectroscopy， thermal stability analysis and room temperature solid-state fluorescence spectroscopy. The results show that the complex crystallizes in triclinic system， space group P， and the cell parameters as follow： a＝1.23722(10) nm， b＝1.24751(10) nm， c＝2.24917(19) nm， α＝101.251(2)°， β＝103.834(2)°， γ＝96.391(2)°； V＝3.2602(5) nm3，Z＝2. The complex exhibits bright-blue fluorescence.
2020, Vol. 54 
