| 铜配合物中游离水分子对光吸收和吸附Cr（Ⅵ）性能的影响 | |
| Effect of free water molecule in copper complexes on the performance of light absorption and adsorption of Cr（Ⅵ） | |
| 摘要: Cu （ClO4）2·6H2O和（1-甲基-1H-苯并咪唑-2-基）甲醇（HL）在甲醇和乙腈混合溶液中反应生成了深蓝色的[Cu （HL）3]（ClO4）2·H2O （1）和浅蓝色的[Cu （HL）3]（ClO4）2（2）。利用元素分析、IR、热重和单晶X射线衍射对它们的结构进行表征分析。测试结果表明配合物1和2均由[Cu （HL）3]2+和抗衡阴离子ClO4-组成，只是1中多了一个游离水分子。配合物1和2中的Cu（Ⅱ）均是与来自配体的N原子和O原子配位，配位数为6。热重分析结果表明，配合物1和2均能在30~245℃范围内结构保持不变。但是，深蓝色的配合物1比浅蓝色的配合物2在289 nm处有着更宽的吸收峰；吸附实验表明配合物1在pH=4~8条件下吸附Cr（Ⅵ）的性能优于配合物2。可见配合物1中游离水分子对光吸收和吸附Cr（Ⅵ）有一定的影响。 | |
| 关键词: 配合物 晶体 结构 性能 影响 | |
| 基金项目: 广西高校中青年教师科研基础能力提升项目（No.2023KY0710）、广西自然科学基金（桂科AD23026019）和国家级大学生创新创业训练项目（No.202311354014）资助。 | |
| Abstract: Cu(ClO4)2·6H2O and (1-methyl-1H-benzimidazol-2-yl) methanol (HL) reacted in a mixed solution of methanol and acetonitrile to produce dark blue[Cu(HL)3](ClO4)2·H2O (1) and light blue[Cu(HL)3](ClO4)2 (2). Their structures were characterized by elemental analysis, IR, thermogravimetric analysis (TGA), and single-crystal X-ray diffraction. The test results showed that complexes 1 and 2 are both composed of[Cu(HL)3]2+ and the counter anion ClO4-, except for the addition of one free water molecule in 1. The Cu（Ⅱ） ions in 1 and 2 are coordinated with N and O atoms from the HL; the coordination number was six. The results of TGA showed that the structures of 1 and 2 could remain unchanged in a range of 30-245℃. However, complex 1 with a dark blue color had a wider absorption peak at 289 nm compared to 2 with a light blue color. The adsorption experiment showed that 1 exhibited better adsorption performance for Cr（Ⅵ） than 2 at pH=4-8. It can be seen that the free water molecule in 1 has a certain impact on light absorption and the adsorption of Cr（Ⅵ）. | |
| Keywords: complex crystal structure performance effect | |
| 投稿时间：2023-06-02 修订日期：2023-09-27 | |
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| 杨少龙,陈瑜欢,颜睦伦,韦承婷,李石雄,贾冰婧.铜配合物中游离水分子对光吸收和吸附Cr（Ⅵ）性能的影响[J].无机化学学报,2023,39(11):2160-2168. | |
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