Crystal Structure and HRS Study of Eu2(3,4-DMBA)6(PHEN)2

Abstract

Abstract: An europium complex of 3,4-HDMBA and PHEN, Eu₂(3,4-DMBA)₆(PHEN)₂was synthesized. The complex crystallizes in triclinic system, space group P1 with a=1.2665(4) nm, b=1.3567(4) nm, c=1.0755(4) nm, α=98.87(3)°, β=108.25(3)°, γ=87.98(2)°, Z=1, R=0.031, M=1559.35. Bonding around each europium consists of two oxygen atoms from the bidentate chelated 3,4-DMBA, four oxygen atoms from four bridging 3,4-DMBA groups and two nitrogen atoms of a 1,10-phenanthroline molecule. The two europium atoms are bridged by the tetrakis(carboxylato-O,O′) groups forming a dimer. Its high resolution spectra(HRS) were observed at 77K with the Eu(Ⅲ) ion as the fluorescence probe. The results of its excitation spectra, emission spectra, time resolution spectra and emission lifetime show that there exist two Eu(Ⅲ) ion sites in the complex.

Key words: Europium, Ternary complex, Crystal structure, Fluorescence spectra

CLC Number:

O614.33

TrendMD:

WANG Li-Ya, ZHENG Xiang-Jun, JIN Lin-Pei, LU Shao-Zhe . Crystal Structure and HRS Study of Eu₂(3,4-DMBA)₆(PHEN)₂[J]. Chem. J. Chinese Universities, 1999, 20(7): 1110.

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Crystal Structure and HRS Study of Eu₂(3,4-DMBA)₆(PHEN)₂

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