multiple sigma bonds

(Polar molecules, Non-polar molecules, etc.)

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Marsenne Cabral 1A
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Joined: Fri Sep 28, 2018 12:19 am

multiple sigma bonds

Postby Marsenne Cabral 1A » Mon Nov 19, 2018 2:33 pm

When forming double and triple bonds, there is only one sigma bond, is there a reason why its only possible to form one sigma bond in double and triple bonds?

Chem_Mod
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Re: multiple sigma bonds

Postby Chem_Mod » Mon Nov 19, 2018 3:03 pm

Double and triple bonds are formed from side-by-side p-orbitals overlapping.

Anna O 2C
Posts: 98
Joined: Fri Sep 28, 2018 12:19 am

Re: multiple sigma bonds

Postby Anna O 2C » Mon Nov 19, 2018 4:42 pm

The sigma bond is going to the shortest and closest bond. When you form extra bonds, those electrons can't invade the bond space already occupied by the sigma bond so they have to arch over in order to reach the other atom. Kind of like if you're hugging someone and then another third person joins the hug, they are going to have to arch over the 2 people with their arms since the middle space is already being occupied by the 1st hug.

megan blatt 2B
Posts: 61
Joined: Fri Sep 28, 2018 12:28 am

Re: multiple sigma bonds

Postby megan blatt 2B » Mon Nov 19, 2018 7:56 pm

I believe that after the first bond, pi bonds begin to form. Like it was previously stated, double and triple bonds are formed by overlapping side by side p orbitals. These are pi bonds which can not rotate like sigma bonds can because they are side by side instead of end to end.

505194972 3k
Posts: 27
Joined: Fri Sep 28, 2018 12:25 am

Re: multiple sigma bonds

Postby 505194972 3k » Mon Nov 19, 2018 10:01 pm

single bonds: 1 sigma bond
double bonds: 1 sigma 1 pi bond
triple bond: 1 simga 2 pi bonds
and so on
This is a good tool to remember/ keep in mind


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