含有TPA连接体的分子篮和的俄罗斯化玩偶综合体
Lei Zhiquan1, Shane Polen1, Christopher M Hadad1
1Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States.
Journal of the American Chemical Society
|June 16, 2016
概括
这项研究表明分子篮可以封装金属复合体, 创造新的结构. 乙纯篮转移性,使三二甲基胺 (TPA) 金属复合物的新催化和性区分应用成为可能.
科学领域:
- 超分子化学
- 协调化学
- 体识别
背景情况:
- 三二甲基胺 (TPA) 金属复合物在催化过程中很重要.
- 设计分子结构来控制金属的复杂性质是一个关键的挑战.
- 第二个协调球的相互作用可以影响反应性和选择性.
研究的目的:
- 在形分子篮子中研究Zn(II) -TPA复合物的复合.
- 探索从一个纯净的篮子到封装的金属复合物的性转移.
- 评估TPA复合体增强催化功能的潜力.
主要方法:
- 凸Zn(II) -TPA复合物 (1) 和形篮子 (2和3) 的合成和表征.
- 核磁共振 (NMR) 光谱和质谱测量以确认复杂的形成.
- 循环二元化 (CD) 光谱用于研究性转移和结构变化.
主要成果:
- 篮子2成功地将Zn(II) -TPA复合物 (1) 入水中,形成1:1复合物,结合常数为 (2.0 ± 0.2) ×10(3) M(-1).
- 用 (S) - 氨酸功能化的3型化剂将其静态性转移到封装的Zn(II) - TPA复合物中.
- 这种性转移通过分子间离子接触诱导了TPA联体的环的左侧 (M) 螺旋扭曲.
结论:
- 分子篮可以有效地作为含有金属的TPA的第二协调球.
- 纯净的篮子可以赋予形金属复合体,从而产生形螺旋.
- 这些发现为增强基于TPA的系统的催化和性分辨能力提供了途径.
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