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Pi bonding

Posted: Thu Nov 21, 2019 3:13 pm
by salvadorramos3k
Why is is important that pi bonding does not allow rotation within the molecules?

Re: Pi bonding

Posted: Thu Nov 21, 2019 3:23 pm
by Kavya Immadisetty 2B
Because in biology, the form of a molecule is vital for its function. The fact that pi bonds don't allow for rotation locks the molecule into a certain shape at double and triple bonds which allow molecules to do its function. Also, the fact that pi bonds don't allow for rotation leads to cis and trans isomers.

Re: Pi bonding

Posted: Thu Nov 21, 2019 3:42 pm
by salvadorramos3k
Kavya Immadi 3D wrote:Because in biology, the form of a molecule is vital for its function. The fact that pi bonds don't allow for rotation locks the molecule into a certain shape at double and triple bonds which allow molecules to do its function. Also, the fact that pi bonds don't allow for rotation leads to cis and trans isomers.

Can you please explain what cis and trans isomers are? I didn't understand when Lavelle explained. Thank youuuu!!! :)

Re: Pi bonding

Posted: Thu Nov 21, 2019 4:02 pm
by Katie Kyan 2K
salvadorramos3k wrote:
Kavya Immadi 3D wrote:Because in biology, the form of a molecule is vital for its function. The fact that pi bonds don't allow for rotation locks the molecule into a certain shape at double and triple bonds which allow molecules to do its function. Also, the fact that pi bonds don't allow for rotation leads to cis and trans isomers.

Can you please explain what cis and trans isomers are? I didn't understand when Lavelle explained. Thank youuuu!!! :)


A cis isomer is polar whereas a trans isomer is nonpolar. In a cis isomer, the two hydrogen atoms are on the same side and the two ethyl groups are on the other side. In a trans isomer, however, the two hydrogens are on opposite sides.