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Abstract:
The title complex crystalizes in the space group P (1) over bar with a=1.3349(7), b=1.9790(4), c=1.2784 (7) nm, alpha=97.67(1), beta=10636(1), gamma=91.71(1)degrees, Z=2, M(r)=1475.19 and the final R=0.051. Each asymmetric species in the crystal contains two crystallographically different Eu(p-CH3C6H4COO)(3)(C12H8HN2) units. Two types of binuclear molecules are formed by the combination of each of the units through inversion with corresponding units of the closest asymmetric species. The former contains 4 bridged carboxylate groups bonded to the two central europium (III) ions, and the latter, only 2 bridged carboxylate anions. Their Eu-Eu atomic distances are 0.4203 and 0.5298 nm respectively. In the F-7(0) --> D-5(0) excitation spectrum of the complex, there are two sharp peaks at 580.07 and 580.73 nm. This shows that the complex has two Eu(III) sites. Two different sets of D-5(0) --> F-7(j)(j=1-4) luminescence spectra have been obtained at the selectively excited D-5(0) levels of the complex, which indicates that Eu(IlI) ions in the complex have unequally chemical environments. This is in agreement with the results of the structure determination.
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SCIENCE IN CHINA SERIES B-CHEMISTRY LIFE SCIENCES & EARTH SCIENCES
ISSN: 1001-652X
Year: 1995
Issue: 1
Volume: 38
Page: 1-9
0 . 4 7 9
JCR@1998
Cited Count:
WoS CC Cited Count: 40
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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