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Topic: Exceptions for Pi Bonds  (Read 2453 times)

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Offline LHM

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Exceptions for Pi Bonds
« on: March 09, 2011, 06:52:19 PM »
My textbook says, "There are a few exceptions to the rule about double bonds: in a few instances both bonds of a double bond are pi bonds." Just wondering, which exceptions are these, and why are they exceptions?

Offline Schrödinger

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Re: Exceptions for Pi Bonds
« Reply #1 on: March 14, 2011, 02:48:30 PM »
The only 'existing' exception that I have come across so far is C2. But it is quite easy to find some more, if you try to use Molecular orbital theory

http://en.wikipedia.org/wiki/Diatomic_carbon
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