通过k1,k2,k1,k2,k1,k1,k2,k1,k1,k2,k1,k1,k1,k2,k1,k1,k1,k2,k1,k1,k1,k2,k1,k1,k1,k1,k1,k,k1,k
Silvia Bordoni1,2, Riccardo Tarroni1, Magda Monari3
1Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy.
一个复合物的与乙烯酸胺的反应出乎意料地形成了一个宏环二元体和一个双重协调的物种. DFT计算和光谱方法阐明了反应路径和中间稳定机制.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 超分子化学 超分子化学
背景情况:
- -素复合物的合成和表征在有机金属化学中至关重要.
- 了解金属复合体中的联结体交换和自我聚合机制,可以深入了解超分子组合.
- 作为连接体的胺衍生物在药物化学和材料科学中具有潜力,因为它们具有生物学相关性.
研究的目的:
- 为了研究胺酸与胺酸之间的反应.
- 为了阐明意想不到的宏环二元体和双重协调物种的形成途径.
- 了解中间物种和反应条件在产品分销中的作用.
主要方法:
- 合成和分离的鲁-胺乙酸复合物.
- 光谱表征包括ESI-MS,IR和1H NMR.
- 用于结构确定的X射线晶体学.
- 密度函数理论 (DFT) 计算用于拟议反应路径的能量分析.
主要成果:
- 反应出乎意料地产生了一个宏环二聚体 (k1(O),k2(N,O) - - - Ru(CO) - - PPh3) 2THAc) 2) 和一个双重协调的物种 (k1(O),k2(O,O) - - Ru(CO) - - PPh3) 2THAc)).
- DFT的计算支持了拟议的反应机制,突出了氨酸配体解离和伊米诺酸核友性的作用.
- 谱学和晶体学数据证实了溶液和固态中的二度结构,包括对伊米诺尔形式的分体化.
结论:
- 固态阻碍的氨酸连接体的裂变促进了自我聚合,导致了稳定的宏环二元体.
- 胺酸乙酸的伊米诺酸体表现出增强的核友性,有助于复杂的稳定.
- 反应结果高度依赖于固态度,溶剂极性,时间和度,这凸显了协调化学的复杂性.
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