title: Synthesis and spectroscopic properties of lanthanide nitrate complexes with a new amide-based quinoxaline-2,3-dione ligand.
abstract: Solid complexes of lanthanide nitrate with 1,4-di(N,N-di-n-butyl-acetamido)-quinoxaline-2,3-dione (L), [Ln(N03)3L.H2O] (Ln=La, Nd, Eu, Gd, Tb, Er), have been prepared and characterized by elemental analysis, IR, UV-vis spectra and conductivity measurements. The fluorescence property of the europium complex in solid state and in MeCN, acetone, AcOEt and THF was studied. Under the excitation, the europium complex exhibited characteristic emissions of europium. The result indicates that the triplet state energy level of the ligand matches better to the resonance level of Eu(III) than Tb(III) ion.
authors.affiliation: College of Chemistry and Chemical Engineering and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, China.
authors.forename: Xue-Qin
authors.initials: XQ
authors.lastname: Song
authors.forename: Ya-Wen
authors.initials: YW
authors.lastname: Wang
authors.forename: Jiang-Rong
authors.initials: JR
authors.lastname: Zheng
authors.forename: Wei-Sheng
authors.initials: WS
authors.lastname: Liu
authors.forename: Min-Yu
authors.initials: MY
authors.lastname: Tan
mesh_terms: D000577:Amides / Q000737:chemistry*; D005063:Europium / Q000737:chemistry; D007811:Lanthanum / Q000737:chemistry*; D008024:Ligands; D009354:Neodymium / Q000737:chemistry; D011810:Quinoxalines / Q000138:chemical synthesis* / Q000737:chemistry*; D012996:Solutions; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D013057:Spectrum Analysis; D013696:Temperature
chemical_list: D000577:Amides; D008024:Ligands; D011810:Quinoxalines; D012996:Solutions; D009354:Neodymium; C016534:lanthanide nitrate; D005063:Europium; D007811:Lanthanum