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结构研究提供了对1,5-dithiacanes的命运的洞察:两个电子可逆氧化与不可逆氧化

Richard S Glass¹, Sanaullah Khan², Michael D Ryan³

¹Department of Chemistry, The University of Arizona, Tucson, Arizona 85721, United States.

The Journal of organic chemistry

|January 14, 2026

概括

一个新的含硫分子,norDTCO,被合成和研究. 它的氧化机制使用DFT进行了研究,揭示了2-中心-3电子键和S-S西格玛键,具有依赖于溶剂的电化学行为.

科学领域:

有机化学有机化学
电化学电化学电化学
计算化学计算化学

背景情况:

1,5-二甲基是含有硫原子的循环有机化合物.
了解它们的氧化机制对于开发新材料和催化剂至关重要.
合规约束可以显著影响化学性质.

研究的目的:

为了合成和表征一个受结构约束的1,5-dithiocane,norbornane-fused1,5-dithiocane (norDTCO). 为了合成和表征一个受结构约束的1,5-dithiocane,norbornane-fused1,5-dithiocane (norDTCO).
通过密度函数理论 (DFT) 计算来研究norDTCO的电子结构和氧化机制.
为了将DFT预测与实验电化学数据相关联.

主要方法:

合成与诺博纳融合的1,5-二二甲 (norDTCO).
密度函数理论 (DFT) 计算中性,基离子和二离子状态.
在乙二和二甲中进行电化学研究 (循环电压测量).

主要成果:

DFT计算预测了norDTCO基离子中的2中心-3电子键和二离子中的跨环形S-S西格玛键.
在乙二中,电化学氧化显示出一个几乎可逆的两电子波,与S-S西格玛键形成一致.
在二甲中的电化学氧化揭示了两个单电子波,表明该溶剂中没有S-S西格玛键的形成.

结论:

在norDTCO的构造约束显著影响其氧化机制和氧化物种的稳定性.
溶剂的选择在norDTCO的电化学行为中起着至关重要的作用,影响跨环状S-S键的形成.
DFT计算是预测和理解复杂含硫分子的电子特性和反应路径的宝贵工具.

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