Methylene is the simplest carbene. In organic chemistry, a carbene is a molecule containing a neutral carbon atom with a valence of two and two unshared valence electrons. The general …

卡宾（Carbene），又称碳宾、碳烯，是H2C:和它的取代衍生物的通称。 通常由含有容易离去基团的分子消去一个中性分子而形成。 与碳自由基一样，属于不带正负电荷的中性活泼中间体。

稳定卡宾（Persistent carbene），包括氮杂环卡宾和其他具有特殊稳定性的卡宾，可作有机金属化学中的辅助配体。 类卡宾 ，有时专指 有机锌化合物 （ICH 2 ZnI）一类的物质，由二卤甲 …

2023年1月23日 · A carbene is a molecule containing a neutral carbon atom with a valence of two and two unshared valence electrons. The general formula is R-(C:)-R' or R=C:. The term …

A carbene is a divalent carbon species that contains two nonbonded electrons and six valence electrons. It can exist in either a singlet or triplet state, depending on the spins of the …

2023年9月26日 · A carbene is a molecule that has a neutral carbon atom with a valence of two and two unshared valence electrons. They are neutral transitory carbon intermediates. They …

2020年8月18日 · 卡宾Carbene，又称碳宾、碳烯。 一般以R2C：表示，指碳原子上只有两个价键连有基团，还剩两个未成键电子的高活性中间体。 通常由含有容易离去基团的分子消去一个 …

Carbene, any member of a class of highly reactive molecules containing divalent carbon atoms—that is, carbon atoms that utilize only two of the four bonds they are capable of …

卡宾体 (carbene)，又称碳烯，一般以R2C：表示，指碳原子上只有两个价键连有基团，还剩两个未成键电子的高活性中间体。 卡宾的寿命远低于1秒，只能在低温下(77K以下)捕集，在晶格 …

A carbene is a neutral form of carbon that has two bonds and two additional electrons. It is highly reactive because it has an incomplete octet with only six electrons around carbon. Carbenes …