Bond angle of square pyramidal

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Natalie Yakobian
Posts: 45
Joined: Fri Sep 25, 2015 3:00 am

Bond angle of square pyramidal

Postby Natalie Yakobian » Tue Nov 03, 2015 3:48 pm

Hello,
I was wondering if the bond angle square pyramidal is 180, 90 or if it is slightly less than 180, 90.

Thanks so much!

cgrabar_2D
Posts: 16
Joined: Fri Sep 25, 2015 3:00 am

Re: Bond angle of square pyramidal

Postby cgrabar_2D » Tue Nov 03, 2015 3:55 pm

The ideal bond angles for square pyramidal are 90 degrees and 180 degrees

zhajee
Posts: 23
Joined: Fri Sep 25, 2015 3:00 am

Re: Bond angle of square pyramidal

Postby zhajee » Tue Nov 03, 2015 7:29 pm

Square pyramidal is AX5E1 with bond angles of 90 and <90 degrees due to the one lone pair of electrons

Natalie Yakobian
Posts: 45
Joined: Fri Sep 25, 2015 3:00 am

Re: Bond angle of square pyramidal

Postby Natalie Yakobian » Tue Nov 03, 2015 10:48 pm

Why would the lone pair of electrons not make everything <90 ?
Thanks so much!

LinaLi2E
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Re: Bond angle of square pyramidal

Postby LinaLi2E » Thu Nov 05, 2015 12:22 pm

All the bond to bond angles should be 90 degrees because the lone pair to bond angle repulsion is stronger than the bond to bond repulsion. So the lone pair should repeal all the bond electrons away more stronger, resulting in all the bond to bond angles decreasing to less than 90.

Ankur Sharma 3J
Posts: 3
Joined: Fri Sep 25, 2015 3:00 am

Re: Bond angle of square pyramidal

Postby Ankur Sharma 3J » Thu Nov 05, 2015 1:24 pm

I never really thought about this until now, but why wouldn't the 180 degrees be less than 180 degrees? I know that a certain part of the figure is linear, but does that mean that the lone pairs field of repulsion cannot reach the bonds that make up the liner aspect of the model?


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