You are at: University of Sheffield » Chemistry » Mark Winter » VSEPR

VSEPR calculation for ethanoate (acetate), MeCO2-

Ethanoate (acetate), MeCO2-
Lewis structure: MeCO2anion.gif
Central atom carbon
Valence electrons on central atom: 4
1 Me group contributes 1 electron: 1
2 terminal oxygens each contribute 1 electron in the two σ bonds: 2
Subtract two for the two electrons contributed by C to the two π bonds -2
Add one for the negative charge located on C 1
Total: 6
Divide by 2 to give electron pairs 3
3 electron pairs: trigonal geometry for the three shape-determining electron pairs
MeCO2anion
The geometry of ethanoate (acetate), MeCO2-. You can use your mouse to manipulate the molecule in the right hand "Jmol" image.

A VSEPR tutorial on the WWW

VSEPR tutorial on the WWW, URL: http://winter.group.shef.ac.uk/vsepr/
Copyright 1996-2015 Prof Mark Winter [The University of Sheffield]. All rights reserved.
Document served: Monday 23rd October, 2017