长碳碳键及其他

Masaya Kishimoto, Takashi Kubo
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引用次数: 0

摘要

合成有机化学的进步促进了对表现出不寻常键合状态的化合物的制备和探索。本综述深入探讨了超过典型键长的碳-碳单键,阐明了在了解其键合性质、属性和化学反应性方面的最新进展。此外,我们还研究了导致出现这种拉长键的因素及其对其他成键参数的影响。此外,我们将重点转向自由基物种的 π 二聚体,超越双中心双电子(2c/2e)键的极限,讨论它们的形成机制、稳定性和固有特性。π-二聚体电子结构的一个关键特征是跨越多个原子的两个未成对电子的成键相互作用,即多中心双电子(mc/2e)键。本综述揭示了碳-碳扩展键(2c/2e 键)和基π-二聚体(mc/2e 键)在有机化学中的重要作用,为今后研究新型功能材料提供了宝贵的启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Long carbon–carbon bonds and beyond
Advances in synthetic organic chemistry have facilitated the preparation and exploration of compounds exhibiting unusual bonding states. This review delves into carbon–carbon single bonds that are exceeding typical length of bonds, elucidating recent advances in understanding their bonding nature, properties, and chemical reactivity. Additionally, we examine factors contributing to the occurrence of such elongated bonds and their effects on other bonding parameters. Furthermore, we shift our focus toward the π-dimers of radical species, surpassing the limit of two-center two-electron (2c/2e) bonds, discussing their formation mechanisms, stability, and inherent properties. A key feature in the electronic structure of π-dimers is the bonding interaction of two unpaired electrons spanning multiple atoms, that is, multicenter two-electron (mc/2e) bonding. This review sheds light on the significant role played by extended carbon–carbon bonds (2c/2e bonds) and radical π-dimers (mc/2e bonding) in organic chemistry, providing valuable insight for future research on new functional materials.
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