| MadSci Network: Chemistry |
The biggest difference is the symmetry of the molecules. In acetone, the carbon-oxygen bond is pulling in the opposite direction (polarity) from the rest of the atoms. in the ether, the molecule is symmetrical so the polarities mostly cancel out.
O
||
C O
/ \ / \
CH3 CH3 CH3 CH3
acetone dimethyl ether
Try the links in the MadSci Library for more information on Chemistry.