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This post presents and explains the basic properties of ketones. Ketones are very similar to aldehydes in that the doubly bonded oxygen is still there; just not on a terminal carbon atom. This has the affect of lowering the molecular dipole strength and produces weaker dipole-dipole interactions compared to aldehydes of similar molecular weights. With the weaker dipole-dipole attractive forces, the affect of London Dispersion Forces becomes much more pronounced at lower molecular weights. The enhanced effects of stronger London Dispersion Forces cause lower molecular weight ketones to have higher boiling points than corresponding aldehydes. Additionally, a more central location of the carbonyl group (C=O) seems to increase the strengths of London Dispersion Forces. The figure below summarizes this post.
That's all for this post. As always, thank you for reading!
A Publication of http://www.ExcellenceInLearning.biz
This post presents and explains the basic properties of ketones. Ketones are very similar to aldehydes in that the doubly bonded oxygen is still there; just not on a terminal carbon atom. This has the affect of lowering the molecular dipole strength and produces weaker dipole-dipole interactions compared to aldehydes of similar molecular weights. With the weaker dipole-dipole attractive forces, the affect of London Dispersion Forces becomes much more pronounced at lower molecular weights. The enhanced effects of stronger London Dispersion Forces cause lower molecular weight ketones to have higher boiling points than corresponding aldehydes. Additionally, a more central location of the carbonyl group (C=O) seems to increase the strengths of London Dispersion Forces. The figure below summarizes this post.
That's all for this post. As always, thank you for reading!
A Publication of http://www.ExcellenceInLearning.biz
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