三种元素的六员环短-长键交替结构都是各自环簇中最稳定的结构。

The six-membered ring of each kind of metals is the most stable.

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因此，当我们考虑一个键的长度的时候，这就应该是我们的键长，这是合理的，因为体系会在核间距达到这一距离时，能量到达最小值。

So, when we think about a bond length, this is going to be the length of our bond here, that makes sense because it's going to want to be at that distance that minimizes the energy.

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因此如果我们看它的键长的话，它实际上比单键更短，却比双键更长。

So if we look at its length, it's actually shorter than a single bond, but longer than a double bond.

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So if we look at its length, it's actually shorter than a single bond, but longer than a double bond.

因此如果我们看它的键长的话，它实际上比单键更短，却比双键更长。

麻省理工公开课 - 化学原理课程节选

So, when we think about a bond length, this is going to be the length of our bond here, that makes sense because it's going to want to be at that distance that minimizes the energy.

因此，当我们考虑一个键的长度的时候，这就应该是我们的键长，这是合理的,因为体系会在核间距达到这一距离时,能量到达最小值。

麻省理工公开课 - 化学原理课程节选

So we want to have constructive interference to form a bond, where as if we had destructive interference, we would not be forming a bond.

我们需要,相干相长来成键，如果，相干相消了，就不能成键，所以这时候。

麻省理工公开课 - 化学原理课程节选