稳定单原子双坐标石 (I) 和石 (II) 使用反氧无毒石 (germylene) 连接物
Jian Xu1, Sudip Pan2, Shenglai Yao1
1Metalorganic and Inorganic Materials, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany.
Journal of the American Chemical Society
|February 26, 2024
概括
研究人员使用一种新型基烯合体开发出一种稳定的基烯合体. 这种策略可以分离具有挑战性的I和II物种,为无机化学提供新的途径.
科学领域:
- 无机化学
- 有机金属化学
- 材料科学
背景情况:
- 鉴别低价比斯 (BiI,BiII) 的物种是很困难的,因为比斯具有强烈的还原性.
- 稳定反应性金属中心通常需要专门的连接体设计,可以容纳电荷和氧化还原活性.
研究的目的:
- 开发一种稳定可分离的单原子BiI和BiII物种的策略.
- 通过氧化还原非无害配体合成和表征新型木复合物.
主要方法:
- 合成一种新型的双胺-胺-胺连体.
- 使用cobaltocene的BiIIII2前体的两个电子的减少.
- 使用DFT计算,X射线光电子光谱 (XPS) 和电子磁共振 (EPR) 光谱进行表征.
- 包括单电子转移 (SET) 反应在内的电化学研究.
主要成果:
- 合成了一种非常稳定的BiI复合物 (4),其中包括一种新的bisgermylene连接物.
- 与Pb0类似物相比,电荷转移到细菌素部分稳定了BiI中心,提高了稳定性.
- 一个可逆的单电子氧化产生了可分离的BiII基复合体 (5),未配对的电子主要在石上.
- BiI离子表现出高核友性,与电友反应形成BiIII复合体.
结论:
- 氧化还原非无害的基基有效地稳定了低价值基物种 (BiI和BiII).
- 这种方法为可分离和可反应的米I) 和米II) 复合物提供了方便的途径.
- 稳定复合体表现出有趣的氧化还原行为和核友性,为新的合成转化开辟了可能性.
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