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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: LHM on March 09, 2011, 06:52:19 PM

Title: Exceptions for Pi Bonds
Post by: LHM 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?

Title: Re: Exceptions for Pi Bonds
Post by: Schrödinger 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