Problem 2E 7

(Polar molecules, Non-polar molecules, etc.)

Moderators: Chem_Mod, Chem_Admin

rachelle1K
Posts: 109
Joined: Sat Sep 07, 2019 12:16 am

Problem 2E 7

Postby rachelle1K » Wed Nov 13, 2019 10:03 pm

Why are all the bond lengths identical in SOCL2? Doesn't Sulfur have a lone pair so that would repel the other atoms and create a difference in bond length?

Vicki Liu 2L
Posts: 101
Joined: Sat Aug 24, 2019 12:15 am

Re: Problem 2E 7

Postby Vicki Liu 2L » Wed Nov 13, 2019 10:53 pm

All the bond lengths are equal in SOCl2 because when you draw the ideal Lewis structure, you see that SOCl2 has resonance. This means that the bonds will all average out to the same length. Also, lone pairs don’t influence bond length, but they do influence bond angle.

Joelle 3L
Posts: 50
Joined: Sat Jul 20, 2019 12:16 am

Re: Problem 2E 7

Postby Joelle 3L » Wed Nov 13, 2019 11:01 pm

The bond lengths would equal the same due to delocalized electrons, meaning there would be resonance structures if you drew it out. The bonds would be the average and the same.

005162520
Posts: 101
Joined: Tue Sep 24, 2019 12:17 am

Re: Problem 2E 7

Postby 005162520 » Wed Nov 13, 2019 11:14 pm

How would you draw the resonance structure for SOCl2?

Brynne Burrows 3K
Posts: 52
Joined: Thu Jul 25, 2019 12:16 am

Re: Problem 2E 7

Postby Brynne Burrows 3K » Thu Nov 14, 2019 12:00 am

005162520 wrote:How would you draw the resonance structure for SOCl2?

S is the central atom, double bonded to the Oxygen atom, single bonded to both Chlorine's, with a lone pair attached to the sulfur.

Jamie Hwang 2F
Posts: 104
Joined: Thu Jul 25, 2019 12:16 am

Re: Problem 2E 7

Postby Jamie Hwang 2F » Thu Nov 14, 2019 1:27 am

I think there might be some confusion in the question. Question 2E.7 asks "b) How many different OSCl bond angles are there in this molecule? c) What values are expected for the OSCl and ClSCl bond angles?

So it's not asking about bond lengths.


Return to “Determining Molecular Shape (VSEPR)”

Who is online

Users browsing this forum: No registered users and 2 guests