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芳香和反芳香的金 (((III) 六氨酸具有多重的金碳键
1Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
Journal of the American Chemical Society
|June 2, 2005
概括
合成了带有黄金(III) 离子的芳香六氨酸复合物. 这些金属化六氨酸在减少时显示出独特的偏热带环流,为复杂有机分子中的芳香性提供了新的见解.
科学领域:
- 有机金属化学 有机金属化学
- 氨酸的化学成分
- 超分子化学 超分子化学
背景情况:
- 六氨酸是具有独特电子特性的大型宏环化合物.
- 甲酸的金属化可以显著改变它们的结构和反应性.
- 了解金属化宏循环的电子行为对于开发新的功能性材料至关重要.
研究的目的:
- 为了合成和表征新型黄金(III) 复合体的六基 (hexakis) ((pentafluorophenyl) [26]hexaphyrin.
- 为了研究Au (III) 金属化的结构和电子后果.
- 探索减少的六氨酸复合物的芳香性和电子性质.
主要方法:
- 合成单和双III) 六氨酸复合物.
- 使用光谱和分析技术进行表征.
- 使用博化物 (NaBH4) 进行电化学还原.
主要成果:
- 形成芳香的单-和bis-Au(III) 六氨酸复合物.
- 激活内部的 pyrrolic β-质子,导致金-碳键的形成.
- 的正方形平面协调Au(III) 与一个NNCC核心.
- 在减少的[28]六氨酸复合体中观察到明显的偏热环流.
结论:
- 六氨酸与Au(III) 的成功化导致稳定的芳香复合物.
- 这项研究展示了一种在六氨酸中形成黄金-碳键的新方法.
- 在减少的复合体中观察到的偏热环流提供了改变芳香度和电子移位的证据.
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