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Chemistry

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Organic Chemistry

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Aromatic Compounds

Benzene π Orbitals and Electron Delocalization

Description

Benzene has a planar ring structure with delocalized π electrons. Its six carbon atoms form a regular hexagon, and each carbon is sp2 hybridized. The C–C–C and H–C–C bond angles are 120°, which matches the flat shape of the ring.

Each carbon is bonded to three other atoms. The C–H bond length is ...

Transcript

分子轨道模型将苯描述为一个具有六个sp2 杂化碳原子的规则平面六边形结构。

相邻的碳原子通过sp2sp2轨道重叠形成σ键。每个碳原子还通过sp2–1s轨道重叠与氢原子形成一个σ键。所有键角均为120°。

此外,每个碳原子都有一个垂直于环平面的、未杂化的、半充满的 2p 原子轨道。

这六个2p轨道组合形成三个成键分子轨道和三个反键分子轨道。

成键轨道被六个π电子完全填满,而反键轨道则为空,使苯具有闭壳层结构,从而赋予其稳...

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