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以氯化镧、咪唑、甘氨酸为原料，采用水相直接合成法合成了一种稀土镧三元配合物。通过红外光谱对三元配合物进行了初步表征。分析了配合物的光谱特性和溶解特性并且与配体进行了比较。初步实验结果表明，与配体相比配合物的各种性质均发生了变化。紫外光谱表明，稀土La与甘氨酸、咪唑三元配合物的最大吸收峰的波长与游离配体甘氨酸和咪唑相比，均发生了不同程度的蓝移，由此可以表明稀土离子La与两种配体均有成键作用。根据配合物的电导率数据可以知道，稀土La配合物为1：3型的电解质，说明Cl-处于配合物的外界，且配合物的电导率随温度和浓度的增加而增加。配合物溶解性不同于单独配体咪唑、甘氨酸，配合物在有机溶剂和水中相比更易溶于水中。 |
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genhunter
至尊木虫 (著名写手)
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lord七七cggg(RXMCDM代发): 金币+15, 多谢应助！ 2015-10-17 08:31:52
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修改了一下： A ternary rare earth coordination complex was synthesized directly in aqueous solution from lanthanum chloride, imidazole, glycine as raw materials. The preliminary characterization of the ternary complex was carried out by FTIR. Its spectrophotometric characteristics and solubility properties of the complexes were analyzed and compared with the ligands. Preliminary experimental results show that, compared with the ligands, various properties were altered for the complex. UV spectra show that compared with the L(希腊字母lambda)max of with free ligand glycine and imidazole, the L(希腊字母lambda)max of Rare Earth La and the ternary complex had blue shifted to various extend, which suggest La3+ and two ligands formed coordination bond. According to the conductivity data of the complex, La complex exists as an electrolyte in 1:3 ratios , indicating that the Cl - ion is outside of the complex, and the conductivity increases with the increase of temperature and concentration. The solubility of the complex differs from individual ligands, imidazole and glycine, the complex is more water soluble than in organic solvents. |
3楼2015-05-21 18:13:49
genhunter
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A ternary rare earth coordination complexes were synthesized directly in aqueous solution from lanthanum chloride, imidazole, glycine as raw materials. The preliminary characterization of the ternary complexes was carried out by FTIR. Its spectrophotometric characteristics and solubility properties of the complexes were analyzed and compared with the ligands. Preliminary experimental results show that, compared with the ligands, various properties were altered for the complex. UV spectra show that compared with the L(希腊)max of with free ligand glycine and imidazole, the L(希腊)max of Rare Earth La and the ternary complexes had blue shifted to various extend, which suggest La3+ and two ligands formed coordination bond. According to the conductivity data of the complex, La complexes exists as an electrolyte in 1:3 ratios , indicating that the Cl - ion is outside of the complex, and the conductivity increases with the increase of temperature and concentration. The solubility of the complex differs from individual ligands, imidazole and glycine, the complexes is more water soluble than in organic solvents. 双语对照 |
2楼2015-05-20 15:04:05
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