CO2

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Alysson Marines 2E
Posts: 17
Joined: Fri Sep 25, 2015 3:00 am

CO2

Postby Alysson Marines 2E » Sun Mar 13, 2016 3:19 am

Why is it an electrophile?

Esther Qiu 2B
Posts: 10
Joined: Fri Sep 26, 2014 2:02 pm

Re: CO2

Postby Esther Qiu 2B » Sun Mar 13, 2016 3:27 am

It's because of it's oxidation state (4).

Jiangyuan Luo 1K
Posts: 15
Joined: Fri Sep 25, 2015 3:00 am

Re: CO2

Postby Jiangyuan Luo 1K » Sun Mar 13, 2016 9:41 am

A easy to way to think about it. CO2 can react with OH-, which is obviously a nucleophile, so CO2 must be a electrophile.

KelseyKobayashi_2M
Posts: 21
Joined: Sat Jul 09, 2016 3:00 am

Re: CO2

Postby KelseyKobayashi_2M » Thu Feb 23, 2017 5:39 pm

Are we always supposed to just look at the charge of the central atom to determine whether is it an electrophile or nucleophile?

Kayla_Black_2B
Posts: 34
Joined: Fri Jul 22, 2016 3:00 am
Been upvoted: 1 time

Re: CO2

Postby Kayla_Black_2B » Thu Feb 23, 2017 7:53 pm

^ I don't think so, just because sometimes electrophiles and nucleophiles can be neutral (it's just more rare). For example, on pg.81 of the course reader, AlCl3 is listed as an electrophile. More of this is discussed in section 4.1 of the organic textbook.

However, I am also surprised C02 is an electrophile...I figured all of the lone pairs on the O atoms would make it a nucleophile...

Wendy_Liu_3A
Posts: 27
Joined: Wed Sep 21, 2016 2:55 pm

Re: CO2

Postby Wendy_Liu_3A » Thu Mar 02, 2017 1:47 pm

If you look at the lewis structure of CO2, you find that C is the central atom with O on either side. Each oxygen has 2 lone pair electrons, making the charge of oxygen partially negative. Since the oxygen is partially negative, C is partially positive. To determine whether a molecule is electrophile or nucleophile, we only look at the molecule's central atom, which is C in this case. Since C is partially positive, it is attracted to negative, or electrons. C's affinity for electrons makes CO2 an electrophile .


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