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The compound (SiCl3)2Fe(CO)4 was synthesized and structurally characterized by X-ray single-crystal diffraction. It crystallizes in monoclinic, space group P2 1/n with α = 8.287(2), b = 9.829(2), c = 9.042(2) A, β = 96.19(3)°, V= 732.2(3) A^3, C4Cl6FeO4Si2, Mr = 436.77, Z = 2, Dc = 1.981 g/cm^3, F(000) = 424, μ(MoKα) = 2.282 mm^-1, the final R = 0.048 and wR = 0.164 for 1109 observed reflections (I 〉 2σ(I)). The crystal structure of (SiCl3)2Fe(CO)4 reveals that the Si(l)- Fe-Si(l)^a sequence is linear and perpendicular to the Fe(CO)4 cross-shaped plane. 相似文献
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氯硅烷改性蒙脱土的制备与性能 总被引:17,自引:1,他引:17
基于氯硅烷与羟基的反应性,用氯硅烷对蒙脱土进行化学改性,FTIR证实硅烷已接枝到了蒙脱土上,WAXD表明,在极性分散剂中,硅烷成功地插层到了蒙脱土的片层间;而在非极性分散剂中,硅烷插层到蒙脱土片层间的量少,测定了蒙脱土阳离子交换容量(CEC),改性后其CEC值大幅度降低,分散性实验表明,由于改性后的蒙脱土颗粒以及片层间的相互作用力得到极大降低,其在水中和甲苯中的分散性更好. 相似文献
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Surface Modification of Montmorillonites by Chlorosilanes 总被引:1,自引:0,他引:1
Montmorillonite was modified by chlorosilane derivatives (trimethylchlorosilane and tert-butyldimethylchlorosilane)based on the reaction between OH group and chlorosilane,Fourier-transformed infrared spectra(FTIR)confirmed that chlorosilanes did react with the OH groups of montmorillonite.The effect of reaction time and dispersing agents on the intercalation was studied by wide angle X-ray diffraction(WAXD) method.Further experiments proved that there is no reactive OH group on the surface of layers in the interlayer galleries of montmorillonite.The cation exchange capacity(CEC) of montmorillonites was measured.showing that after modification by chlorosilane derivatives,CEC values drastically decreased.The dispersibility measurements of montmorillonites were conducted.which showed that the dispersibility of modified montmorillonites both in H2O and toluene wer improved due to the decrease of attractions of particles and layers. 相似文献
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