借助X射线衍射(XRD)、扫描电镜-能谱(SEM-EDS)、红外光谱(FTIR)、核磁共振(NMR)等技术,研究了铜对地聚合物化学结构的影响.地聚合物由硅粉、偏高岭土、氢氧化钾和水制得,铜以硝酸盐的形式加入.结果表明:加入的铜影响到地聚合物化学结构...借助X射线衍射(XRD)、扫描电镜-能谱(SEM-EDS)、红外光谱(FTIR)、核磁共振(NMR)等技术,研究了铜对地聚合物化学结构的影响.地聚合物由硅粉、偏高岭土、氢氧化钾和水制得,铜以硝酸盐的形式加入.结果表明:加入的铜影响到地聚合物化学结构中Al—O—Si键和Si—O—Si键的周围气氛,使其振动频率发生微小变化,也影响到Al和Si原子核周围的电子密度,使27 Al NMR和29Si NMR特征峰发生微小偏移,但加入的铜没有改变地聚合物中化学键振动模式,也没有引起硅氧四面体、铝氧四面体结构单元和两者之间键接方式的变化.展开更多
The X-ray single-crystal structure analyses have been determined for two metal imidazole chlorides: [Fe(Im)6]Cl24H2O 1 and [CuCl(Im)4]Cl 2 (Im = imidazole). The red crystal of compound 1 is of triclinic, space group P...The X-ray single-crystal structure analyses have been determined for two metal imidazole chlorides: [Fe(Im)6]Cl24H2O 1 and [CuCl(Im)4]Cl 2 (Im = imidazole). The red crystal of compound 1 is of triclinic, space group Pi with Mr = 607.31 (C18H32Cl2FeN12O4), a = 8.797(2), b = 9.068(2), c = 10.581(2) ? a = 75.35(3), ?= 83.20(3), ? = 61.85(3)o, V = 720.0(2) 3, Z = 1, Dc = 1.401 g/cm3, F(000) = 316, = 0.755 mm-1, R = 0.0353 and wR = 0.1227. The blue crystal of compound 2 belongs to monoclinic, space group P21/c with Mr = 406.77 (C12H16Cl2CuN8), a = 13.909(3), b = 8.8933(18), c = 15.086(7) ? ?= 118.32(2), V = 1642.7(9) 3, Z = 4, Dc = 1.645 g/cm3, F(000) = 828, = 1.666 mm-1, R = 0.0609 and wR = 0.1726. In solid state, both 1 and 2 form three-dimensional hydrogen bond networks to stabilize the structures which were also characterized by TG and elemental analyses. The thermal gravity (TG) data indicate that the residues are Fe and Cu for 1 and 2, respectively.展开更多
文摘借助X射线衍射(XRD)、扫描电镜-能谱(SEM-EDS)、红外光谱(FTIR)、核磁共振(NMR)等技术,研究了铜对地聚合物化学结构的影响.地聚合物由硅粉、偏高岭土、氢氧化钾和水制得,铜以硝酸盐的形式加入.结果表明:加入的铜影响到地聚合物化学结构中Al—O—Si键和Si—O—Si键的周围气氛,使其振动频率发生微小变化,也影响到Al和Si原子核周围的电子密度,使27 Al NMR和29Si NMR特征峰发生微小偏移,但加入的铜没有改变地聚合物中化学键振动模式,也没有引起硅氧四面体、铝氧四面体结构单元和两者之间键接方式的变化.
基金This work was supported by the Natural Science Foundation of Shandong Province (No.Y2002B06)
文摘The X-ray single-crystal structure analyses have been determined for two metal imidazole chlorides: [Fe(Im)6]Cl24H2O 1 and [CuCl(Im)4]Cl 2 (Im = imidazole). The red crystal of compound 1 is of triclinic, space group Pi with Mr = 607.31 (C18H32Cl2FeN12O4), a = 8.797(2), b = 9.068(2), c = 10.581(2) ? a = 75.35(3), ?= 83.20(3), ? = 61.85(3)o, V = 720.0(2) 3, Z = 1, Dc = 1.401 g/cm3, F(000) = 316, = 0.755 mm-1, R = 0.0353 and wR = 0.1227. The blue crystal of compound 2 belongs to monoclinic, space group P21/c with Mr = 406.77 (C12H16Cl2CuN8), a = 13.909(3), b = 8.8933(18), c = 15.086(7) ? ?= 118.32(2), V = 1642.7(9) 3, Z = 4, Dc = 1.645 g/cm3, F(000) = 828, = 1.666 mm-1, R = 0.0609 and wR = 0.1726. In solid state, both 1 and 2 form three-dimensional hydrogen bond networks to stabilize the structures which were also characterized by TG and elemental analyses. The thermal gravity (TG) data indicate that the residues are Fe and Cu for 1 and 2, respectively.
