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Eu(Ⅲ)与Hbbimp的配合物的合成、表征及与活化磷酸二酯键模型物BDNPP的水解动力学研究 总被引:4,自引:0,他引:4
合成了Eu(Ⅲ)配合物[Eu2(bbimp)(CH3COO)(CH3CH2O)2(CH3CH2OH)](ClO4)2(A),产物经IR谱、UV谱、1HNMR谱、摩尔电导、元素分析对其结构进行了基本鉴定。用紫外光谱法研究了磷酸二酯键模型物双 (2,4 二硝基苯基)磷酸盐BDNPP与配合物A在pH7.26,25和37℃时,[BDNPP]=[A]=2.5×10-5mol·L-1时的动力学性质,得到BDNPP的二级水解速率常数为k25℃=3.027×103(mol·L-1)-1·min-1,k37℃=6.060×103(mol·L-1)-1·min-1,半衰期t1 2分别为12.9和6.6min,使BDNPP的水解速率大大提高。 相似文献
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A new complex with binuclear nickel(Ⅱ) complex [Ni2(bbimp)(CH3CH2OH)2Cl2]Cl·4H2O (bbimp=2,6-bis[bis(2-benzimidazolylmethyl)]aminomethyl-4-methylpheno)(o)had been synthesized and characterized by ele-mentary analysis, IR and UV. The molecular structure of the title complex was determined by X-ray single crystal diffraction method. The crystal is monoclinic, space group P21/n with a=20.803(2)?, b=30.708(3)?, c=20.959(2)?, β=105.776(2)°, Z=8, V=12885(2)?3, Dx=1.132Mg·m-3, μ=0.755mm-1, F(000)=4592, R1=0.1267, S=1.376. It was showed that the nickel(Ⅱ) cation is the central ion of a distorted octahedral coordination with two N belonging to benzimidazole, a bridging phenolate O, a N of tertiary amine, a Cl anion, and an O of an ethanol molecule. Two nickel(Ⅱ) cations in a molecular structure had the same coordinated environment. CCDC: 197601. 相似文献
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