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connie 2C
Posts: 106
Joined: Thu Jul 11, 2019 12:17 am


Postby connie 2C » Fri Nov 22, 2019 1:28 am

what is the significance of sigma and pi bonds? i don't understand what they do for the molecular structure.

Tiffany Chao 2H
Posts: 117
Joined: Fri Aug 09, 2019 12:17 am

Re: significance

Postby Tiffany Chao 2H » Fri Nov 22, 2019 1:47 am

Sigma bonds allow for the molecule to rotate while pi bonds don't allow it to rotate because they are side by side. Like Lavelle showed in class, if you put 3 EXPO markers in between your two pointer fingers and twist, two markers would fall (pi) while one marker remains in place (sigma).

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

Re: significance

Postby Justin Quan 4I » Fri Nov 22, 2019 12:29 pm

Sigma and pi bonds are chemical covalent bonds formed by an overlap in atomic orbitals. These bonds are important because knowing if a bond has sigma, pi, or both bonds helps us determine behavior of molecules in molecular orbital theory.

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