Cyclopentadiene is an organic compound with the formula C 5 H 6. [6] . It is often abbreviated CpH because the cyclopentadienyl anion is abbreviated Cp −. This colorless liquid has a strong and unpleasant odor. At room temperature, this cyclic diene dimerizes over the course of hours to give dicyclopentadiene via a Diels–Alder reaction.

Cyclopentadiene | C5H6 | CID 7612 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

环戊二烯 （英語： cyclopentadiene）， 有时会称为 茂 [註 1]化氢 （CpH） [來源請求][註 2]，是五个碳的环状 二烯烃，分子式为C 5 H 6。 环戊二烯室温下为无色液体，具有强烈的刺激性气味。 在室温时会发生 狄尔斯-阿尔德反应，迅速 聚合 生成 二聚环戊二烯，二聚体加热又可分解为环戊二烯。 环戊二烯不溶于水，易溶于 乙醚 、 苯 等溶剂。 环戊二烯基可以简写为 Cp。 试管中的环戊二烯，置于冰水中。 环戊二烯制备时通常与二聚物混合在一起，并且可以相互转化。 工业 …

环戊二烯（Cyclopentadiene），是一种有机化合物，化学式为C5H6，为无色液体，不溶于水，混溶于乙醇、乙醚、苯、四氯化碳，溶于二硫化碳、丙酮、乙酸、苯胺等，主要用作有机合成中间体。

One of the most well know examples of an aromatic ion is the 1,3-cyclopentadiene ion. 1,3-Cyclopentadiene is nonaromatic due to the presence of an intervening sp3 hybridized -CH 2 - carbon atom which prevents pi electrons from delocalizing about the entire ring. Also, it only has 4 pi electrons which does not follow Hückel's 4n + 2 rule.

Follow the links above to find out more about the data in these sites and their terms of usage. Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, References, Notes.

2024年7月26日 · 化学式 C5H6 （摩尔质量：66.1 g/mol，不饱和度为3）可以指： 这个 同类索引页 列出了具有相同分子式的化学物（即 同分异构体）条目。 除非您是有意链接至本页，否则应将相应条目的内部链接指向正确的条目。

1,3-Cyclopentadiene bipolymer form.

The molecular formula C5H6 (molar mass: 66.10 g/mol, exact mass: 66.04695 u) may refer to:

Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here. Notice: Concentration information is not available for ...