论文部分内容阅读
在有机反应中,卡宾是一类重要的反应活性中间体。本文着重讨论有关卡宾的结构、反应及区别两种状态卡宾的方法。已知碳原子有四个杂化的原子轨道,最多可容纳八个电子。而卡宾的碳原子最外层仅有六个电子,四个电子与两个氢原子构成两个成键的分子轨道外,还有两个非键电子保留在原子轨道中。这两个未成键的电子就有两种可能的排布方式:一种情况是它们同处于一个原子轨道,二者自旋方向相反;另一种情况是它们分别占据两个原子轨道,二者自旋方向相同。
Carbene is an important class of reactive intermediates in organic reactions. This article focuses on the structure of carbene, reaction and the distinction between the two state carbene method. It is known that carbon atoms have four hybrid atomic orbits, accommodating up to eight electrons. The carbene carbon atoms outermost only six electrons, four electrons and two hydrogen atoms form two bonded molecular orbital, there are two non-key electrons remain in the atomic orbitals. There are two possible arrangements of the two non-bonding electrons: one is that they are in the same atomic orbit, the two spin in the opposite direction; the other is that they occupy two atomic orbits, respectively, both The same spin direction.