过渡金属卡宾配合物 Transition metal carbene complex

（重定向自Metal carbene）

过渡金属卡宾配合物可用通式L_nM=CR₂表示，它在形式上含有M=C双键。自由状态的卡宾:CR₂由于碳原子的形式氧化态为+2价，碳原子周围只有6个价电子因而异常活泼，寿命极短，它们是许多有机化学反应的中间体，仅有少数几例可以分离得到。虽然卡宾不能直接和金属反应，但卡宾能和金属结合形成配合物而稳定。

单词	Metal carbene
释义	Metal carbene 英语例句库 Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene. 关环转换反应是形成碳碳双键的重要反应之一,即双烯化合物在金属碳烯催化下关环得到环烯类化合物。中文百科过渡金属卡宾配合物 Transition metal carbene complex （重定向自Metal carbene）过渡金属卡宾配合物可用通式L_nM=CR₂表示，它在形式上含有M=C双键。自由状态的卡宾:CR₂由于碳原子的形式氧化态为+2价，碳原子周围只有6个价电子因而异常活泼，寿命极短，它们是许多有机化学反应的中间体，仅有少数几例可以分离得到。虽然卡宾不能直接和金属反应，但卡宾能和金属结合形成配合物而稳定。英语百科 Transition metal carbene complex 过渡金属卡宾配合物（重定向自Metal carbene） A transition metal carbene complex is an organometallic compound featuring a divalent organic ligand. The divalent organic ligand coordinated to the metal center is called a carbene. Carbene complexes for almost all transition metals have been reported. Many methods for synthesizing them and reactions utilizing them have been reported. The term carbene ligand is a formalism since many are not derived from carbenes and almost none exhibit the reactivity characteristic of carbenes. Described often as M=CR₂, they represent a class of organic ligands intermediate between alkyls (−CR₃) and carbynes (≡CR). They feature in some catalytic reactions, especially alkene metathesis, and are of value in the preparation of some fine chemicals.
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Metal carbene

过渡金属卡宾配合物 Transition metal carbene complex

Transition metal carbene complex 过渡金属卡宾配合物