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1. Two novel Cr(III) complexes TBA[Cr(SA)2(en)] and [Cr(SA)(en)2]Br:Synthesis, characterization and kinetics properties | |||
Zhang Yujiao,Liu Bin,Yang Binsheng | |||
Chemistry 17 December 2012 | |||
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Abstract:Two novel Cr(III) complexes TBA[Cr(SA)2(en)] (I) and [Cr(SA)(en)2]Br (II) have been synthesized (TBA=Tetrabutylammonium, H2SA=Salicylic acid, en=ethylenediamine) and determined by X-ray crystallography. The competition reaction with EDTA or apoovotransferrin (apoOTf) was monitored by UV-Visible and fluorescence spectra at 37 C in 0.01 M Tris-HCl pH=7.4. The rate constant k for the reaction with EDTA is kEDTA(I)=(1.2±0.03)×10-3 and kEDTA(II)=(2.3±0.07)×10-3 M-1S-1, while the rate constant k for the reaction with apoovotransferrin is kOTf(I) =(8.9±0.3)×10-2, kOTf(II)= (1.5±0.07)×10-1 M-1S-1, respectively.The bond length, steric hindrance or electrostatic repulsion is responsable for the different kinetics behavior of the title complexes. | |||
TO cite this article:Zhang Yujiao,Liu Bin,Yang Binsheng. Two novel Cr(III) complexes TBA[Cr(SA)2(en)] and [Cr(SA)(en)2]Br:Synthesis, characterization and kinetics properties[OL].[17 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4503497 |
2. Synthesis, kinetic stabilities and potential anti-obesity activity of [Cr(III)(SA)(TETA)]ClO4 | |||
Liu Bin,Zhang Yujiao,Yang Binsheng | |||
Chemistry 11 December 2012 | |||
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Abstract:In this paper one chromium(III) complexes, [Cr(III)(SA)(TETA)]ClO4 (I), was synthesized, and the structure was determined by X-ray crystallography (en=ethylenediamine, TETA= triethylenetetramine). Its kinetic stabilities in different media and different conditions (pH, H2O2, EDTA or visible light) were studied by means of UV-visible spectroscopy. Then its efficacy to prevent obesity was tested using a diet-induced obesity rat model. The primary results indicate that the compound effectively suppress the increases in body mass and adipose mass, without any noticeable toxic effect. It also prevented increases in the plasma triglyceride, cholesterol, and low density lipoprotein (LDL) concentrations. | |||
TO cite this article:Liu Bin,Zhang Yujiao,Yang Binsheng. Synthesis, kinetic stabilities and potential anti-obesity activity of [Cr(III)(SA)(TETA)]ClO4[OL].[11 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4502896 |
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