二二化 (bida) 针复合物:结构和反应性
Ann K Kayser1, Peter T Wolczanski1, Thomas R Cundari2
1Department of Chemistry and Chemical Biology, Baker Laboratory Cornell University, Ithaca, New York 14853, United States.
Inorganic chemistry
|September 14, 2023
概括
这项研究详细介绍了新型复合物的合成和表征,其中包括bida (N1-Ar-N2-(((1-Ar-1-benzo[d]imidazol-2-yl) methyl) benzene-1,2-diamide) 连接体. 这项研究探讨了.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 无机合成 无机合成
背景情况:
- 氧化还原活性连接体的开发对于促进催化和材料科学的发展至关重要.
- 子连接物为金属复合体提供独特的协调环境和稳定性.
- 比达连接体,一种新型的半叶状,是偶然发现的,并显示出质子/H原子反应的潜力.
研究的目的:
- 为了合成和表征新型的复合物,其中包含了 bida 连接体.
- 研究这些复合物与各种试剂的反应性,包括亚化物和N-chloro-succinimide.
- 探索由此产生的物种的电子结构和氧化还原特性.
主要方法:
- 合成比达 (bida) 的二盐Na2THF.
- 盐转化反应与和前体.
- 配体替代和氧化反应.
- 光谱表征 (NMR,UV-Vis) 和X射线晶体学.
- 包括穆利肯旋转密度分析在内的计算研究.
主要成果:
- 成功合成了各种比达-复合物,包括 (比达) CrCl ((THF), (比达) CrCl ((PMe2Ph) 和 (比达) CrR ((THF).
- 通过氧化与化物,形成模物种, (bida) ClCrNR.
- 对一个插入产物 (bida) Cr 2 - N,N - Ar N 3 - Nph 和一个去质子化的配体物种 (bia) Cr Cl 2 - THF) 的观察.
- 在不同氧化状态 (Cr(III) 到Cr(V)) 中,度量参数保持不变.
- 电子结构分析揭示了反铁磁合和复杂的基态添加剂.
结论:
- 比达连接体在与协调和促进多样反应方面表现出多功能性.
- 与比达连接体的复合体表现出复杂的电子结构,具有氧化还原无罪的证据.
- 比达联体的甲基组在反应性中起作用,使得像deprotonation和HAT反应这样的转变成为可能.
- 这项工作扩大了子联体化学的范围,并提供了对高价值物种电子性质的见解.
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