Page 1 of 1

Molecular Shape

Posted: Sat Nov 24, 2018 10:54 pm
by Alyssa Wilson 2A
Can someone please give an overview of when you would end up with a seesaw structure?

Re: Molecular Shape

Posted: Sat Nov 24, 2018 11:02 pm
by Matthew Choi 2H
Imagine a molecule with the VSEPR formula, AX4E1. There is a central atom with 4 bonds and one lone pair. The electron geometry for this molecule would be trigonal bipyramidal: one bond going straight up, one bond going straight down, and three on the equatorial plane. However, the formula AX4E1 has a lone pair which occupies one of the three bond areas along the equatorial plane. If you can imagine the rest of the structure, it will look like a seesaw with the remaining bonds occupying the rest of the bonds mentioned before.

Re: Molecular Shape

Posted: Sun Nov 25, 2018 2:10 am
by Samantha Ito 2E
A seesaw structure occurs when the electron geometry is trigonal bipyramidal and there are 4 bonds to the central atom and 1 lone pair to the central atom.

Re: Molecular Shape

Posted: Sun Nov 25, 2018 2:13 am
by Samantha Ito 2E
seesaw shape.jpg
Hope this helps you to visualize it!

Re: Molecular Shape

Posted: Sun Nov 25, 2018 3:15 pm
by Niveda_B_3I
The arrangement of the electron density would be trigonal bipyramidal, but the arrangement of the atoms would be tetrahedral, since there's a lone pair. As a result, you would end up with seesaw structure.

Re: Molecular Shape

Posted: Sun Nov 25, 2018 3:21 pm
by LedaKnowles2E
A seesaw structure happens whenever an atom is surrounded by four atoms and one lone electron pair, or AX4E1.

Re: Molecular Shape

Posted: Sun Nov 25, 2018 4:37 pm
by davidryan3f
A molecule with a seesaw molecular geometry will have a total of 5 electron domains and one of them will be a lone pair of electrons. The molecule will have angles of 120, 180, and 90 degrees at various locations.

Re: Molecular Shape

Posted: Sun Nov 25, 2018 4:55 pm
by Andrewwiner4D
There are four bonded atoms and one lone pair. The angles of the bonded atoms are 90, 90>angle>180, and 180. Mostly the four bonded atoms are tetrahedral, but the lone pair pushes down the atoms.