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In our last post we showed that molecules with C-C pi () bonds absorb light in the UV-visible region, which promotes electrons from (bonding)orbitals to (anti bonding) * orbitals.We saw thatthe energy required for the transition depends mostly on the extent...
In today’s post we’ll discuss why most molecules are colourless, introduce the useful technique of UV-visible spectroscopy, and finally explainwhy molecules like chlorophyll and -carotene are coloured. We’ll even finish by showing you how...
Why are tomatoes red? Why are carrots orange? Why are egg yolks yellow? And… why isVulcanblood green?“Given our tremendous biological similarities…the scriptwriters’ decision to give me green blood… is highly illogical…Captain”OK,...

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Zed Shaw teaches a course in writing Python called “Python the Hard Way“. Because the hard way is easier, he says.In the end, he’s right. If you really want to learn organic chemistry, the hard way is easier. In graduate school I had to un-learn...
Last time we talked about how some interesting electronic effects can lead to unexpected results in organic chemistry. Today we look at three examples of how steric factors can lead to unexpected products (or lack of products). The last example is a case where...
Over at Med School Odyssey, the author recently wrote about finishing Org 1, and has a lot to share about his experiences with the course. Here are some choice excerpts from that post, and from a few of his earlier posts.1. Don’t believe the hypeDont...

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A bit of a lack of exciting syntheses so far this week, so here's some methodology and random reflections and recollections.I don't mind that we don't get told the whole truth as undergraduates, because most of us can't handle the truth (well, not all of it)....
This is a loose transcript of the Syllabus Day speech I gave my Organic Chemistry I class on the first day of fall semester this week. Organic Chemistry I is the first of a two semester sequence at my small, Midwest, liberal arts university. Our five organic...
Well... this oughta cover it.I was reading comments to my reddit submission of the many oxidation states of carbon, and Aa1979 asked if the functional groups could be arranged logically according to actual chemical transformations. I replied that would be too...