Chem. J. Chinese Universities ›› 2005, Vol. 26 ›› Issue (3): 401.

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Crystal Structure, Fluorescence Properties and Thermal Stability of Supra-molecule Complex [Eu(C10H9N2O4)(C10H8N2O4)(H2O)3]2·phen·4H2O

YANG Rui1,2, HE Shui-Yang1, WU Wang-Ting1, SHI Qi-Zhen1, WANG Da-Qi3   

  1. 1. Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi'an 710069, China;
    2. College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China;
    3. Department of Chemistry,Liaocheng University, Liaocheng 252000, China
  • Received:2004-07-12 Online:2005-03-10 Published:2005-03-10

Abstract: A new superamolecule complex(C10H10N2O4, H3L=2-oxo-propionic acid salicyloyl hydrazone and C12H8N2=1,10-phenanthroline phen) was synthesized and its crystal structure of [Eu(C10H9N2O4)·(C10H8N2O4)(H2O)3]2·phen·4H2O was determined by X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a=1.378 6(12) nm, b=1.398 8(12) nm, c=1.759 7(16) nm, α=73.977(11)°, β=68.598(12)°, γ=71.224(12)°, V=29.42(4) nm3, Z=2, μ=2.208 mm-1, Dc=1.746 Mg/m3, F(000)=1 556, R=0.037 7, ωR=0.074 4, GOF=0.916. There are two 9-coordinated structure units in every molecule, in which Eu(Ⅲ) is coordinated by two tridentate C10H10N2O4 ligands and three water molecules and both structural units are distorted monocapped square antiprism. There are one free 1,10-phenanthrolines and four water molecules that are connected with 2-oxo-propionic acid salicyloyl hydrazone and water molecule by hydrogen bonds in the crystal cell. The complex formed a supermolecule in space through the hydrogen bonds. The composition of the complex is verified by IR, 1H NMR and thermal decomposition. The test of luminescence capacity of the complex showed that the complex has a good fluorescence.

Key words: Europium(Ⅲ) complex, 2-Oxo-propionic acid salicyloyl hydrazone, 1,10-Phenanthrolines, Crystal structure, Fluorescence property, Thermal decomposition

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