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制备了两种半乳糖醇氯化钆配合物,其中一种是金属离子与配体摩尔比为2∶1的配合物,钆离子与半乳糖醇的3个羟基及6个水分子配位,其它水分子以结晶水的形式存在,氯离子不参加配位;另一种配合物根据红外光谱、元素分析、差热热重分析、远红外光谱以及太赫兹光谱推测可能是钆离子与2个半乳糖醇分子的6个羟基以及3个水分子配位,形成1∶1配合物.实验结果表明,红外光谱法可直接对糖配合物的结构提供重要信息,半乳糖醇与稀土离子之间可以形成多种配合物,金属离子与糖的羟基存在着复杂的相互作用.
Two kinds of galactitol gadolinium chloride complexes were prepared. One of them was a complex with a molar ratio of metal ions to ligand of 2: 1. The gadolinium ions coordinated with three hydroxyl groups of galactitol and six water molecules, Other water molecules exist in the form of crystal water and chloride ions do not participate in the coordination. The other complex may be based on infrared spectroscopy, elemental analysis, DTA, far-infrared spectroscopy and terahertz spectroscopy, The 6 hydroxyl groups and 3 water molecules of lactitol molecule coordinate to form a 1: 1 complex.The experimental results show that infrared spectroscopy can directly provide important information for the structure of the sugar complex, and between galactitol and rare earth ions The formation of a variety of complexes, metal ions and sugar hydroxyl there is a complex interaction.