So let's do c p 1 dot y, c p 2 dot y.

这不太好因为，两个地方的值都是一样的，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

Remember, we didn't hybridize the 2 p y orbital, so that's what we have left over to form these pi bonds.

记住，我们并没有杂化2py轨道，这是我们剩下的那个行成了π键。

麻省理工公开课 - 化学原理课程节选

This actually I think derives from a Greek word, "Synkope, " S-y-n-k-o-p-e, synkope.

这个术语我觉得来源于希腊语,Synkope,S-y-n-k-o-p-e

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So if you picture this as our s p 2 carbon atom where we have three hybrid orbitals, and then one p y orbital coming right out at us.

如果你把这想象成sp2碳原子,这里有3个杂化轨道，然后一个py轨道朝向我们。

麻省理工公开课 - 化学原理课程节选

That's it. Again, these other p dxy dyz - or the d x y, d y z, those are going to be those more complicated linear combinations, you don't need to worry about them.

同样，这些p轨道,或者，它们是一些,很复杂的线性组合，你们，不用管它。

麻省理工公开课 - 化学原理课程节选

So let's look at the first case 2px where we have either the 2 p x or 2 p y type of orbitals that we're combining.

让我们看看第一个情形,我们要组合,或者2py轨道。

麻省理工公开课 - 化学原理课程节选

So they're the same shape, this is the shape of the orbital or the shape of the wave function, and we can call this either 2 p x a being combined with 2 p x b, or we could say since it's the same shape, it's 2 p y a being combined with 2 p y b.

它们形状是一样的，这是轨道的形状或者波函数的形状，我们叫它2pxa和2pxb结合，或者我们说因为它们的形状是一样的，它是2pya和2pyb结合。

麻省理工公开课 - 化学原理课程节选

And again, this is between the p orbitals, these are not hybrid orbitals, so when we name this bond we're going to name it as a pi bond here, because it's between two p orbitals, and it's going to be between the carbon 2 p y orbital, and the other carbon 2 p y orbital.

同样，这是在p轨道之间的，它们不是杂化轨道，所以当我们命名这个键时,我们要命名它为π键，因为它在两个p轨道之间，而且是在碳2py轨道，和另一个碳2py轨道之间。

麻省理工公开课 - 化学原理课程节选