Synthesis and characterization of lanthanide(III) complexes of 4′,5′-dibromobenzo-15-crown-5

被引:0
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作者
Dong, WK [1 ]
Yang, RD [1 ]
Ma, L [1 ]
机构
[1] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China
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中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Six new solid complexes bf lanthanide(III) nitrates with 4, 5-dibromobenzo- 15-crown-5 (Br, B15C5), [Ln (NO3)(3)Br2B 15C5] (Ln=La-Nd) and [Ln(NO3)(3) (OH2)(2)] Br2B 15C5 CH3CN (Ln = Sm, Eu) have been synthesized and characterized by elemental analyses, IR and UV spectra, molar conductance measurements, TG-DTA and XRD. Coordination number of the lanthanide(III) ion for La(III), Ce(III), Pr(III) and Nd(III) complexes is found to be eleven. Sm(II) and Eu(III) ions are not directly bonded to the crown ether but are bonded by hydrogen bonds.
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页码:733 / 735
页数:3
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