C-Term magnetic circular dichroism (MCD) spectroscopy in paramagnetic transition metal and f-element organometallic chemistry.

C-Term magnetic circular dichroism (MCD) spectroscopy in paramagnetic transition metal and f-element organometallic chemistry.
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DOI:
10.1039/d0dt03730c
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发表时间:
2021-01-14
期刊:
Dalton transactions (Cambridge, England : 2003)
影响因子:
--
通讯作者:
Neidig ML
Neidig ML
中科院分区:
其他
文献类型:
--
作者:
Wolford NJ ;Radovic A ;Neidig ML

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磁性圆二色光谱(MCD)是一种用于探测顺磁性金属配合物电子结构和成键的强有力的实验。虽然C-项MCD光谱已被用于许多化学领域,但在研究顺磁性有机金属过渡金属和f-元素配合物时,它尚未得到充分利用。从孤立的有机金属配合物的分析到原位生成物种的研究,MCD可以提供有关配体相互作用,氧化和自旋状态,顺磁性物种的几何形状和配位环境的信息。这种技术的实用方面,例如无空气样品制备和低温实验温度,允许研究高度不稳定的物种,这通常是其他光谱技术难以实现的。这种观点强调MCD研究过渡金属和f-元素的有机金属配合物,包括原位生成的反应中间体,证明这种技术在探测顺磁性有机金属化学的电子结构,键合和机制的实用性。这种观点提供了一个介绍磁性圆二色性(MCD)光谱和它的功效,阐明基本的电子结构和原位反应形态的d-和f-块有机金属。
Magnetic circular dichroism (MCD) spectroscopy is a powerful experiment used to probe the electronic structure and bonding in paramagnetic metal-based complexes. While C-term MCD spectroscopy has been utilized in many areas of chemistry, it has been underutilized in studying paramagnetic organometallic transition metal and f-element complexes. From the analysis of isolated organometallic complexes to the study of in situ generated species, MCD can provide information regarding ligand interactions, oxidation and spin state, and geometry and coordination environment of paramagnetic species. The pratical aspects of this techique, such as air-free sample preparation and cryogenic experimental temperatures, allow for the study of highly unstable species, something that is often difficult with other spectroscopic techniques. This perspective highlights MCD studies of both transition metal and f-element organometallic complexes, including in situ generated reactive intermediates, to demonstrate the utility of this technique in probing electronic structure, bonding and mechanism in paramagnetic organometallic chemistry. This perspective provides an introduction to magnetic circular dichroism (MCD) spectroscopy and its efficacy in elucidating both fundamental electronic structure and in situ reaction speciation in d- and f-block organometallics.
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