This web page will not be maintained during the 2017-18 academic year. All course-related materials should be obtained from the appropriate Moodle pages. This site will resume business in Fall, 2018.
A new article in Science magazine from Prof. Ayanna Thomas’ research group is one that every O Chem student should look at. The article doesn’t contain any chemistry, but it contains some potentially valuable insights into becoming a more successful O Chem student.
The DoJo will have drop-in tutoring available 7-9 PM for Chem 201 on Sat (12/10) and Mon (12/12).
Sam and Alan will also be in their offices for drop-in-consultation for much of Th/F/M/Tu/W, weather permitting.
Some of you may be suffering from FMOOWMP. You know the symptoms, but you probably didn’t know that help was close at hand. And it’s painless. Here’s a short video to bring you up-to-speed. https://youtu.be/yQq1-_ujXrM
I heard a presentation from a neuroscientist last week on how our brains work. She highlighted different brain networks that one can imagine working well in some situations (“keep an eye out for tigers and snakes”), but get corrupted into un-, even counter-productive activities in modern circumstances (“keep an eye out for tweets”). We all have these networks and we all live in a world filled with more, and more round-the-clock, stimuli than our ancestors could have ever imagined. Staying on task gets more challenging all the time. Here’s an article from the NY Times Education section that might offer some helpful insights and tips: How to Deal with Digital Distractions (Times, 1 Nov 2016).
You can also test your ability to resist distractions right now: try not clicking on this post from 2013, Like Ketchup on Sushi, that takes you to another Times article, How to Get an A- in Organic Chemistry.
What single thing must you do to learn organic chemistry? Sam and I have given you the answer several times: practice solving problems. But is that all you have to do? Can you just open the book to a problem, work on it, and learn organic chemistry? Maybe you can, maybe you can’t. Not all practice makes perfect.
Predicting the outcome of an “opposite side attack” SN2 reaction can be confusing at first, but animations can help. Check out the SN2 animation at chemtube3D.com. To operate the animation, find the drawing of the chemical reaction and click on the forward reaction arrow.
Try to understand the simple reaction from multiple perspectives: 1) the C seems to push its way through its 3 H neighbors to get from leaving group to nucleophile, OR 2) the 3 H neighbors seem to back away from the approaching nucleophile and move to the leaving group’s side of the molecule. You can rotate the animation as it plays so that you can see it from different angles.
Another SN2 animation to watch: HS(-) + (S)-PhCHClCH3
The models you need can be downloaded here:
Click on the link to download a Spartan EDF2/6-31G** model of ethanol monomer and ethanol dimer. The models have been combined in a single file (a ‘list’ model) and they already contain calculated IR spectra, so do not replace them with SSPD models.
Note: the IR frequencies in these models are unscaled and do not reproduce experimental values.
Computers – source of endless entertainment or endless drudgery? A little of both, right.
Why not turn your computer into a mood enhancer by making some music with the Tonematrix audio tool. 2 minutes will put you in another world. And who knows? When you come back to our world, you might be just a little more able to dip into organic chemistry. Or become the next Philip Glass.