watching paint (thinner) dry

so, i’m at a ’sit and wait’ step in my experiment at the moment. all i have to do is keep an eye on the solvent trap and refill with liquid nitrogen as needed (and it doesn’t need a top-up often…it’s been fine for the past 2 hours or so). thankfully i only have to evaporate half of the toluene that’s in the round bottom flask, before adding some hexanes to precipitate out my product. unfortunately, i’m not sure how pure my product is; it’s still got a green color to it even after a second filtration through celite, when it should be clear. i’ll just wait for the nmr, i guess.

~ by scififreaker on 2008.June.23.