Pi bonds


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Peter Nguyen 2I
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

Pi bonds

Postby Peter Nguyen 2I » Sun Dec 09, 2018 12:11 am

Why are pi bonds always unhybridized?

keyaluo4C
Posts: 54
Joined: Fri Sep 28, 2018 12:17 am

Re: Pi bonds

Postby keyaluo4C » Sun Dec 09, 2018 12:20 am

For sp2, when there are more than 3 valence electrons in the outer shell, three will hybridize and the rest will form pi bonds. This happens because it causes no leftover elections and is optimal.

Iona Pay
Posts: 43
Joined: Fri Sep 28, 2018 12:15 am

Re: Pi bonds

Postby Iona Pay » Sun Dec 09, 2018 12:35 am


Ian Morris 3C
Posts: 50
Joined: Wed Sep 18, 2019 12:18 am

Re: Pi bonds

Postby Ian Morris 3C » Sun Nov 03, 2019 10:24 pm

Iona Pay wrote:I found this video helpful for understanding the hybridization of pi bonds.

https://www.khanacademy.org/science/organic-chemistry/gen-chem-review/hybrid-orbitals-jay/v/pi-bonds-and-sp2-hybridized-orbitals


This video is very helpful. Thanks for sharing

Katherine Brenner 3H
Posts: 73
Joined: Wed Sep 18, 2019 12:18 am

Re: Pi bonds

Postby Katherine Brenner 3H » Thu Nov 07, 2019 8:30 am

When you have a double bond, you have 2 pi bonds and 1 sigma bond. When you find the hybridization level, you only count the the number of sigma bonds or hybrid bonds.

605110118
Posts: 25
Joined: Wed Sep 18, 2019 12:21 am

Re: Pi bonds

Postby 605110118 » Thu Nov 07, 2019 2:20 pm

What is the difference between pi and sigma?

505312292
Posts: 63
Joined: Sat Aug 17, 2019 12:17 am

Re: Pi bonds

Postby 505312292 » Fri Nov 08, 2019 9:46 am

605110118 wrote:What is the difference between pi and sigma?

sigma is all single bonds and pi is the second bond in a double bond

APatel_4A
Posts: 55
Joined: Sat Aug 24, 2019 12:17 am

Re: Pi bonds

Postby APatel_4A » Fri Nov 08, 2019 10:04 am

505312292 wrote:
605110118 wrote:What is the difference between pi and sigma?

sigma is all single bonds and pi is the second bond in a double bond


I still don't really understand this concept, can someone explain it further?

Sartaj Bal 3H
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: Pi bonds

Postby Sartaj Bal 3H » Fri Nov 08, 2019 11:13 am

In a sigma bond, electron density is usually concentrated between the nuclei of the two bonding atoms. In a pi bond, the electron density is usually concentrated below and above the plane of nuclei in the two bonding atoms. A single bond is referred to as a sigma bond. In a double bond or triple bond, one bond is a sigma bond and the second and third respectively are pi bonds.


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