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Author Topic: Resonance Structures for SO3-  (Read 31644 times)

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ebsameer

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Resonance Structures for SO3-
« on: September 13, 2007, 08:31:18 AM »

I have drawn the following resonance structures for SO3-:

http://www.cartage.org.lb/en/themes/sciences/chemistry/inorganicchemistry/Informationbonding/bondingindex/Resonance/SO3.gif

However, couldn't I also draw3 more, since Sulfur does not obey the octet rule (thus forming more than 3 bonds)?

Extra 3:

O=S=O
    |
    O (-)


O=S-O (-)
    =
    O

(-) O-S=O (-)
        =
        O 
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Dan

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Re: Resonance Structures for SO3-
« Reply #1 on: September 13, 2007, 09:31:20 AM »

I have drawn the following resonance structures for SO3-:

*link*

Those are all representations of SO3 (the neutral species).

Are you sure you want to be drawing structures for SO3- and not SO32-?
SO3- would be a radical anion, ie one unpaired electron on S (whereas SO32- has a lone pair on S, and SO3 no lone pair on S).

Extra 3:

O=S=O
    |
    O (-)


O=S-O (-)
    =
    O

These are SO3-, you sould probably include the unpaired electron on S when you draw in in your work.

Quote
(-) O-S=O (-)
        =
        O 

Did you mean to put a minus charge here?
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