Bond strength & resonance structures

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Shibhon_Shepard
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Joined: Wed Nov 15, 2017 3:04 am

Bond strength & resonance structures

Postby Shibhon_Shepard » Fri Dec 07, 2018 11:26 am

Can someone explain the correlation between the bond strength and resonance structures?

Artin Allahverdian 2H
Posts: 59
Joined: Thu Sep 27, 2018 11:26 pm

Re: Bond strength & resonance structures

Postby Artin Allahverdian 2H » Fri Dec 07, 2018 1:07 pm

Say you have a resonance molecule that has 3 bonding pairs and 2 are single bonds and one is a double bond. However, we can move around that double bond to the other bonding pair positions to form 3 resonance structures. In the real world, the bonds of resonance structures are the average of the resonance bonds. The bond length will be somewhere between the length of a single bond and a double bond. In other words, the resonance bonds will each be longer than a double bond, but shorter than a single bond.

Artin Allahverdian 2H
Posts: 59
Joined: Thu Sep 27, 2018 11:26 pm

Re: Bond strength & resonance structures

Postby Artin Allahverdian 2H » Fri Dec 07, 2018 1:09 pm

Oh I almost forgot. Since the resonance bonds are longer than a double bond but shorter than a single bond, they will be stronger than a single bond, but weaker than a double bond, since bond length is inversely proportional to bond strength.


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