Pi and Sigma bonds
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Pi and Sigma bonds
Can someone explain any general rules about using pi and sigma bonds? I understand how they overlap either end to end or sideways but do you have to draw out the entire 3D structure to figure this out? Or is there a rule deciding how many pi/sigma bonds are in molecules?
Re: Pi and Sigma bonds
It depends on how many bonds there are. 1 bond=1isgma bond. 2bonds=1 sigma and 1 pie. 3bonds=1 sigma and 2 pie
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Re: Pi and Sigma bonds
The first bond is always sigma bond. The next bonds are pi bonds. For example, triple bond would be sigma bond + 2 pi bonds.
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Re: Pi and Sigma bonds
I think the general idea behind pi and sigma bonds that we need to know is determining how many of each there are in a large molecule of some sort. So the basic rule of a single bond having 1 sigma bond, a double bond having 1 sigma and 1 pi bond, and a triple bond having 1 sigma and 2 pi bonds is useful when tying to determine this.
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Re: Pi and Sigma bonds
Besides knowing that pi bonds are any bonds past a single bond, also know that pi bonds do not allow the molecule to rotate.
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Re: Pi and Sigma bonds
Dakota Walker 1L wrote:Can someone explain any general rules about using pi and sigma bonds? I understand how they overlap either end to end or sideways but do you have to draw out the entire 3D structure to figure this out? Or is there a rule deciding how many pi/sigma bonds are in molecules?
it is a general rule that single bonds exhibit one sigma bond, double bonds exhibit one sigma and one pi bond, and a triple bond exhibits one sigma and two pi bonds.
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