4.13 (b)

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Golbarg Rahimi 3k
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Joined: Sat Jul 22, 2017 3:01 am

4.13 (b)

Postby Golbarg Rahimi 3k » Wed Dec 06, 2017 3:21 pm

The lewis structure of POCl3 is tetrahedral but p has an expanded octet and a double bond. Why doesn't the double bond affect the bond angles? I was thinking that because of the double bond the angle has to be less than 109.5 but in the solution manual the angles are 109.5. thanks

Ishan Saha 1L
Posts: 60
Joined: Fri Sep 29, 2017 7:03 am

Re: 4.13 (b)

Postby Ishan Saha 1L » Wed Dec 06, 2017 3:28 pm

I also share the same question. I believe that the solution manual may be wrong because this molecule does not have resonance and thus the pi bond is localized, which means the presence of a double bond should decrease the Cl-P-Cl bond angles to make them less than 109.5 degrees. If this is wrong, I would greatly appreciate if someone can explain why a localized double bond shouldn't decrease the other bond angles. Thank you!

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