Crystal Structure and Fluorescent Spectra of Eu(DBM)3(2,2'-bipy) Complex

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (3): 305.

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Crystal Structure and Fluorescent Spectra of Eu(DBM)₃(2,2'-bipy) Complex

WANG Ming-Zhao¹, JIN Lin-Pei¹, LIU Shi-Xiong², CAI Guan-Liang², HUANG Jin-Ling², QIN Wei-Ping³, HUANG Shi-Hua³

1. Department of Chemistry, Beijing Normal University, Beijing, 100875;
2. Department of Chemistry, Fuzhou University;
3. Changchun Physics Institute, Chinese Academy of Sciences

Received:1992-06-05 Revised:1992-10-06 Online:1993-03-24 Published:1993-03-24

Abstract

Abstract: Eu(C₁₅H₁₂O₂)₃(C₁₀H₈N₂), M=1103.03, belongs to monoclinic system with space group P2₁/c, α=l.3309(4) nm, b=2.2473(5) nm, c= 1.6231(1) nm, β=109.68(1)°, K=4.571 (2) nm³, Z=4, D_x= 1.43 g·cm^-3, λ(MoK_α) = 0.071069 nm, μ=14.24 cm^-1, F(000) = 2004, T=295K.The structure was solved by heavy-atom method and refined by full-matrix least-squares technique for 64 non-hydrogen atoms anisotropically for 5590 reflections with I>3σ(I).The final Ris 0.046.The metal atom in the monomeric molecule is coordinated by six Oatoms of DBMligands and two Natoms of 2,2' -bipy to form a distorted square antiprism.Eu( Ⅲ ) ion as luminescent probe features a high sensitivity and easily interpretable spectra by the selective laser excitation.High resolution laser excitation and emission spectra were recorded at 77K.An unique peak at 17237 cm^-1 indicating only one Eu( Ⅲ ) ion site in the title complex was observed.Spectra of ⁶D_o→⁷F_j(J= 0-2) transitions show that the symmetry for Eu( Ⅲ ) site is C₁ which is in agreement with the result of crystal structure determination.

Key words: Europium ternary complex, Crystal structure, Fluorescent spectra

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WANG Ming-Zhao, JIN Lin-Pei, LIU Shi-Xiong, CAI Guan-Liang, HUANG Jin-Ling, QIN Wei-Ping, HUANG Shi-Hua. Crystal Structure and Fluorescent Spectra of Eu(DBM)₃(2,2'-bipy) Complex[J]. Chem. J. Chinese Universities, 1993, 14(3): 305.

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Crystal Structure and Fluorescent Spectra of Eu(DBM)₃(2,2'-bipy) Complex

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