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hypervalent_iodine

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hypervalent_iodine last won the day on March 3

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About hypervalent_iodine

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  • Interests
    Organic and medicinal chemistry
  • College Major/Degree
    Ph.D. in medicinal / synthetic chemistry and mycology
  • Favorite Area of Science
    Organic Chemistry
  • Occupation
    Postdoctoral research fellow

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  1. Thank you, and I’ll say I worked very hard on teaching them how to type / finding an appropriately sized key board, so it’s nice to have my work recognised.
  2. A point I wholeheartedly agree with. There is a lot of literature in the crisis management space that discusses this and treats the increase in frequency and severity due to climate change as a given. The way that plays out in policy is interesting. As a side note, the floods in 2011 didn’t just hit Brisbane either, they impacted roughly 75% of QLD all told. We won’t really be able to know how the damages and costs compare until it’s finished battering the NSW coast, but I would guess you are right that the net effect including NSW (especially Sydney) might tip the net cost over what happened in 2011. It also looks like we’re getting severe thunder storms and giant hail tomorrow up here, so fingers crossed we get through round 2 relatively in tact.
  3. I don’t want to detract from your main point too much, but I have lived in Brisbane through both. The 2011 ones were way worse, but also quite different. Those ones came after months of non-stop rain. They didn’t manage the dams properly and sent a tidal wave down the river when it got to the point where they had no option but to release water. The damage and flood levels were considerably higher in 2011. The house I lived in at the time was thankfully on a hill that became an island for a few days and we were without power for four days, but we were lucky. Even before this weekend there were properties that had not yet recovered from 2011, largely thanks to insurance companies who refused to pay out and people being forced into bankruptcy. These floods came quickly and surpassed predictions, which did mean that people that probably should have evacuated did not. There were a surprising number of deaths, but if I had to guess I’d say the suddenness of it all was at least partly to blame. Properties and areas that didn’t have good drainage suffered badly, but 2011 was still worse.
  4. My assumption is that it is asking you for the masses of each individually to make up a litre of solution with those concentrations and that the first number is meant to be in M. The last bit is an assumption though so I would check that. How much is also kind of vague and not stated but the only way I can think to answer it (it isn’t even really a question it’s just a statement) with that information is with masses.
  5. What reactions have you learnt about so far that might fit? Can you identify where the fragment on the left appears in the product?
  6. While this thread is closed and (I think) being the only person who identifies as female in this thread, I just wanted to provide a little food for thought. Of all the women in my life with whom I am close to, I can't think of a single one who hasn't been sexually assaulted or raped by a man at some point in her life. I cannot say the same about the men I know wrt to false accusations. Anecdotal I know, but something to think about.
  7. I think it’s also important to note that we don’t always agree on a particular course of action such as banning every time it is suggested and will make compromises that everyone can agree to regularly. Conferring with one another isn’t merely an exercise in box ticking.
  8. What, you don’t like rolling 3 month contracts completely contingent on obtaining a portion of the ever-dwindling pools of grant money available? Weird.
  9. After some further discussion, staff have updated the above to now read:
  10. I’ve met a couple of members IRL when I’ve been in the US and have considered them friends at various points. Others I knew digitally when IRC was a thing, and a few I am friends with on FB. These days I generally avoid crossing streams. Difficult to forget that one.
  11. You will need to attempt this yourself before we can help you. What are your thoughts?
  12. Solubility in barium chloride as well.
  13. I agree with Sensei. Get a model kit or even just some tooth picks and blu tack. Make something with four different substituents and make its mirror image, then try and rotate the mirror image so that it is identical to the first molecule. You’ll find that it doesn’t work because they are not superimposable. If you repeat the process but with two substituents that are the same, you should find that you can rotate them to look identical (hence it is not chiral). The example you gave doesn’t work since by your own logic, the two mirror images are superimposable.
  14. You mean by their chemical shifts etc? There are many resources online that will go through it.
  15. It doesn’t. The stereochemistry and how they occupy space is what matters. A good illustration of why this matters in drug design is your feet. They are mirror images of one another but nonsuperimposable in the same way enantiomers are. You will probably know from experience that if you try to put your left shoe on your right foot or vice versa, it won’t fit very well. The same is often true for chiral drug molecules and their molecular targets (eg. enzymes). In the drug world, the quintessential example of why chirality matters a lot is thalidomide, which I’ll let you look up.
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