组-6组-14三键复合物与乙烯之间的 [2 + 2] 循环添加的反应性分析:理论研究的见解
Chi-Shiun Wu1, Ming-Der Su1,2
1Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan.
Inorganic chemistry
|September 28, 2023
概括
理论研究表明,含有6组和14组元素的有机金属复合物与Me-CC-Ph发生 [2+2] 循环添加反应. 反应机制涉及dative键,激活障碍取决于反应物的几何结构.
科学领域:
- 有机金属化学 有机金属化学
- 理论化学 理论化学
- 计算化学计算化学
背景情况:
- 不和有机金属复合物的反应性对于合成化学至关重要.
- 了解循环添加反应为结合形成和分子组装提供了洞察力.
- 六组和十四组元素为复杂的设计提供了不同的电子特性.
研究的目的:
- 为了研究6组/14组三键复合物的理论反应性,与Me-CC-Ph进行 [2+2] 循环添加反应.
- 阐明这些反应的结合机制和控制这些反应激活障碍的因素.
- 为了确定哪些特定的14组元素可以促进与基复合物的循环添加.
主要方法:
- 使用M06-2X-D3/def2-TZVP理论水平进行密度函数理论 (DFT) 计算.
- 能量分解分析 (EDA),以了解结合相互作用.
- 激活应变模型 (ASM) 用于分析反应障碍.
主要成果:
- Me-CC-Ph与所有6组/复合体形成 adduct,产生四个成员的环.
- 与,和锡的复合物经历 [2+2] 循环添加.
- 结合机制涉及单片碎片之间的原始键形成.
- 激活障碍主要取决于反应物的几何变形能量.
结论:
- 该研究提供了一个理论框架,用于预测G6G14复合物的循环加法反应性.
- 几何因素显著影响激活屏障,与哈蒙德的假设保持一致.
- 这些发现有助于合理设计用于循环添加反应的有机金属催化剂.
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