摘要
A new oxadiazole-functionalized ligand, 2-benzamide-5-phenyl-[ 1,3,4 ] oxadiazole （HL1） was synthesized. With it as the first ligand, 2-Phenyl-imidazo[4,5-f] 1, 10-phenanthroline （L2） as the second ligand, a novel europium complex [Eu（L1）3L2] was prepared and characterized by X-ray structure analysis and photoluminescent spectrum. The complex crystallizes in triclinic with space group of Pi. The crystal data are as follows： a = 1.4892（3） nm, b = 1.6639 （3） nm, c=1.7258（4） nm, α =9.290（3） nm, β=11.014（3） nm, γ=11.554（3） nm, V=3520.7（12） nm^3, Z= 2, M = 1244, Dc = 1.292 g·cm^-3, μ = 1.381 mm^-1 and F（000） = 1389. The final R and wR values are 0. 0680 and 0. 1557 for 6607 [ I 〉 2σ （I）] unique reflections. In the complex, each Eu（ Ⅲ ） ion is eight-coordinated by three carbonyl oxygen atoms and three oxadiazole nitrogen atoms from L1, two nitrogen atoms from the L2, forming a distorted square antiprism coordination geometry. The complex shows intense red emission typical of Eu^3＋ ion under UV excitation, both ligands L1 and L2 exhibit strong antenna effects.
A new oxadiazole-functionalized ligand, 2-benzamide-5-phenyl-[ 1,3,4 ] oxadiazole （HL1） was synthesized. With it as the first ligand, 2-Phenyl-imidazo[4,5-f] 1, 10-phenanthroline （L2） as the second ligand, a novel europium complex [Eu（L1）3L2] was prepared and characterized by X-ray structure analysis and photoluminescent spectrum. The complex crystallizes in triclinic with space group of Pi. The crystal data are as follows： a = 1.4892（3） nm, b = 1.6639 （3） nm, c=1.7258（4） nm, α =9.290（3） nm, β=11.014（3） nm, γ=11.554（3） nm, V=3520.7（12） nm^3, Z= 2, M = 1244, Dc = 1.292 g·cm^-3, μ = 1.381 mm^-1 and F（000） = 1389. The final R and wR values are 0. 0680 and 0. 1557 for 6607 [ I 〉 2σ （I）] unique reflections. In the complex, each Eu（ Ⅲ ） ion is eight-coordinated by three carbonyl oxygen atoms and three oxadiazole nitrogen atoms from L1, two nitrogen atoms from the L2, forming a distorted square antiprism coordination geometry. The complex shows intense red emission typical of Eu^3＋ ion under UV excitation, both ligands L1 and L2 exhibit strong antenna effects.
基金
ProjectedsupportedbytheNaturalScienceFoundationofHenanProvice(0312000700)andtheNationalScienceFoundationofChina(20471054)
