2.27b

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ChristianM3F
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Joined: Sat Sep 14, 2019 12:16 am

2.27b

Postby ChristianM3F » Mon Nov 25, 2019 4:33 pm

So for VSPER, when dealing with radicals, do we account for singular electrons as electron dense regions? For example in CH2+, since the Lewis structure has two bonds, one lone pair and a single electron to the carbon, are there three or four electron dense regions? Will the lone electron affect the molecular shape the same way a lone pair does?

McKenna_4A
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Joined: Sat Aug 24, 2019 12:18 am

Re: 2.27b

Postby McKenna_4A » Mon Nov 25, 2019 5:54 pm

Still consider the electron as a region of electron density, but understand the shape will be somewhat different. A single electron will not exert as much force on surrounding atoms as a lone pair. For example, NO2+ has a bent shape with an O-N-O bond angle of greater than 120 as opposed to less than.

Maya Beal Dis 1D
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Re: 2.27b

Postby Maya Beal Dis 1D » Mon Nov 25, 2019 5:56 pm

In the textbook it says to treat the single electron on a radical as a region of electron density. The single electron would be less repulsive than two electrons in a lone pair and would effect bond angles less because of that. Still it would count as a single region of electron density.

Maya Beal Dis 1D
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Re: 2.27b

Postby Maya Beal Dis 1D » Mon Nov 25, 2019 5:57 pm

To clarify, that would mean there are four regions of electron density making the electron arrangement of the central atom tetrahedral.

Kylie Lim 4G
Posts: 90
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Re: 2.27b

Postby Kylie Lim 4G » Mon Nov 25, 2019 6:20 pm

A single electron is still considered a region of electron density, so the molecule that you mentioned would have 4 regions.


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