I briefly considered chemical engineering as a freshman, but it didn’t take. Had I known then what exciting lives some chemists lead I might have given it more thought. I just discovered this delightful blog category titled “Things I Wont Work With“. What kind of chemicals might scare the bejeezers out of a professional chemist? How about this:
Did I mention that this prep was performed on less than one millimole? Spirited stuff, that tetra-azide. The experimental section of the paper enjoins the reader to wear a face shield, leather suit, and ear plugs, to work behind all sorts of blast shields, and to use Teflon and stainless steel apparatus so as to minimize shrapnel. Hmm. Ranking my equipment in terms of its shrapneliferousness is not something that’s ever occurred to me, I have to say. It’s safe to assume that any procedure which involves considering which parts of the apparatus I’d prefer to have flying past me will not get much business in my lab, no matter how dashing I might look in a leather suit.
That procedure deserves a closer look, though. You can’t just crack open a can of selenium tetrafluoride whenever you feel the urge, you know. That stuff has to be made fresh, as far as I can see, and the way these hearty sons of toil make it is by reacting selenium dioxide with chlorine trifluoride. Yep, that stuff, the delightful compound that sets sand on fire and eats through asbestos firebrick.
So if you’re going to make selenium polyazides, your day starts with chlorine trifluoride and I’m sure that it just rolls along from there. Before you know it, you’ve gone from viciously reactive halogens, paused to prepare some disgusting selenium fluorides, made some violently unstable azides that explode if you stick your tongue out at them and hey, it’s dinnertime already. . .
Fun with chemistry!