Dipole moments in trigonal bipyramidal shaped molecules

Moderators: Chem_Mod, Chem_Admin

Ryan Juncker 3D
Posts: 51
Joined: Wed Sep 18, 2019 12:18 am

Dipole moments in trigonal bipyramidal shaped molecules

Postby Ryan Juncker 3D » Sun Nov 17, 2019 12:04 pm

In a perfectly symmetrical trigonal bipyramidal molecule do the dipole moments all cancel like they do in a symmetrical tetrahedral or can these molecules still be polar?

Ada Chung 1C
Posts: 55
Joined: Sat Aug 17, 2019 12:15 am

Re: Dipole moments in trigonal bipyramidal shaped molecules

Postby Ada Chung 1C » Sun Nov 17, 2019 12:30 pm

In a trigonal bipyramidal shaped molecule, the polar bonds wouldn't cancel so this molecule would still be considered polar. If you look at the geometry you can see that it is not symmetrical in such a way that the dipole moments would cancel.

eduardomorales5
Posts: 77
Joined: Fri Aug 30, 2019 12:15 am

Re: Dipole moments in trigonal bipyramidal shaped molecules

Postby eduardomorales5 » Sun Nov 17, 2019 12:37 pm

For molecules that are highly symmetrical, like the trigonal bipyramidal, octahedral, and tetrahedral, the individual dipoles will usually cancel out, as they are typically non-polar molecular structures. However, if some of the atoms attached to a trigonal bipyramidal molecule, for example, are not the same, then it can become a polar molecule. Take CH4Cl, while it is in a trigonal bipyramidal shape, the electronegativity of the chlorine atom will pull more electrons toward it and create a dipole moment that makes the molecule polar.

JTijerina_4A
Posts: 46
Joined: Mon Sep 23, 2019 12:17 am

Re: Dipole moments in trigonal bipyramidal shaped molecules

Postby JTijerina_4A » Sun Nov 17, 2019 12:38 pm

In addition to shape it is also important to note which atoms compose the molecule and their respective electronegativities.

Aliya Jain 2B
Posts: 101
Joined: Wed Sep 11, 2019 12:16 am

Re: Dipole moments in trigonal bipyramidal shaped molecules

Postby Aliya Jain 2B » Sun Nov 17, 2019 4:02 pm

Different atoms often have differences in electronegativity which causes them to be polar even if their geometry is symmetrical.


Return to “Dipole Moments”

Who is online

Users browsing this forum: No registered users and 2 guests