在双金属复合体中[N2]2-的光诱导同质化
Mingbin Yuan1, Andrew J McNeece2, Ekaterina A Dolgopolova3
1Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States.
Journal of the American Chemical Society
|November 1, 2024
概括
开发了第一个化光开关,使用近红外光实现侧向和端向协调模式之间的受控异体化. 这一发现为有机分子的氧化还原反应开辟了新的途径.
科学领域:
- 无机化学
- 有机金属化学
- 摄影化学
背景情况:
- (N2) 是一个稳定的分子,它的激活对于固定至关重要.
- 兰化物复合物为化学转化提供独特的电子特性.
- N2配体的可光切换的协调模式在很大程度上尚未被探索.
研究的目的:
- 报告第一个酸光开关.
- 为了研究二联体的侧向和端向协调模式之间的受控异构.
- 探索这些复合物的光色特性和反应性.
主要方法:
- 合成和表征双金属二复合物.
- 通过近红外光 (NIR) 诱导的光异构.
- 单射线衍射 (XRD) 和拉曼光谱用于结构分析.
- 电子结构和机械学研究的第一原则计算.
主要成果:
- 合成了第一个酸光开关,C5Me4H2THFLu2μ-η2:η2-N2 (1).
- 光诱导的可逆异构化到终端异构体,[{C5Me4H}2{THF}2{μ-η1:η1-N2} (2).
- 原始的连接体和溶剂配置对于光色是必不可少的.
- 阐明了异构化的机制细节和电子结构.
- 复合物2与炭发生反应,产生二炭和炭二元体.
结论:
- 一种呈现光色的新型兰他酸二光开关被发现.
- 侧面到端面的同质化可以通过NIR光控制.
- 这种光开关显示出新的氧化还原反应途径的潜力.
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