在一个正式的鲁 (I) 化物复合体中,证明了连接体非无罪
Noah L Wieder1, Michelle Gallagher, Patrick J Carroll
1Department of Chemistry and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
Journal of the American Chemical Society
|March 5, 2010
概括
一种新型的复合物与反应,形成一个偏磁双核化物. 这种不寻常的金属化物在固态中表现出非局部化的电子密度和弱共价键.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
背景情况:
- 复合体在催化和材料科学中至关重要.
- 偏磁过渡金属化物是一种罕见而有趣的物种.
- 了解电子移位是设计新功能材料的关键.
研究的目的:
- 为了合成和表征一种新的二桥式复合物.
- 为了研究复合物与的反应性.
- 为了阐明由此产生的水化物种的电子结构和磁性.
主要方法:
- 一个零价值,二桥式复合物的合成.
- 与多余的气发生反应,形成双核化物.
- 使用X射线衍射进行结构性表征.
- 密度函数理论 (DFT) 计算用于电子结构分析.
- 在溶液和固态中测量磁敏度.
主要成果:
- 一个双核化物种的形成,{[N(3) ]Ru(H)}(2)(mu-eta(1):eta(1) -N(2)).
- 复合物2是一种结构特征的磁性过渡金属化物,是的首次.
- 未配对的电子密度被转移到[N(3) ]联体上,这表明Ru(II) 正式的氧化状态.
- 溶液的磁矩表示每个部分有一个不配对的电子,而固态二磁性则来自分子间相互作用.
- DFT计算揭示了通过固态中SOMO重叠的弱共价键.
结论:
- 合成的化是一种不寻常的磁性物种,具有非局部化的电子特征.
- [N(3)](-) /Ru(II) 形式主义比简单的Ru(I) 状态更好地描述电子结构.
- 固态中的分子间相互作用导致自旋配对和二磁性.
- 这项研究提供了对过渡金属化物和有机金属复合体中电子移位的性质的见解.
相关概念视频
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