Improve your spiritual life with the help of jewels


How to Grow Crystal

There are a lot of reasons to grow crystalspolarity SLOWLY changes, the thermodynamic
in research, but none of them are morewonders of crystallization occur. In the case
important than the journal bump they cause.to the left, I've put some of my new
As it turns out, even collecting a crystalsynthetic target, Tiklemaitaint A, into a
can be its own publication, albeit in a lessvial filled with dichloromethane and I've
than interesting journal. Therefore, it isallowed pentane to slowly diffuse into it. If
with great efforts that we try to growyou look closely you'll see some pretty
crystals.crystals.
For those of us in the natural products game,Another method that's very popular is to
crystals all but remove the ambiguity withsimply allow for slow diffusion. This method
any relative stereochemistry. This way, weis more straight forward. You simply layer
only have two possible molecules to make.one solvent on top of another and the slow
SURE, you can say you've made heptacene anddiffusion process causes crystals to form in
stabilized it by various things, but you'rethe middle. So, that's pretty easy. Then
assured a JACS or Angew paper if you can giveagain, the easiest way is to just keep some
'em a cif file. And since blogs are uselessof your crap in an NMR tube and forget about
(imho) if they fail to inform, I'll show youit and then one day look over and discover
how  'ol  Kyle  grows  up  his  crystals.amazing crystals. That's possibly the best
way to do it, since there's no effort and
I do my own data collection at our worldit's  always  a  surprise.
famous crystal structure facility, mount my
own crystals, solve my own diffractions andYou can also cap your NMR tube (or any vial,
whatnot, so I've vested a lot of interest inreally) and drop it into a (really good)
this sort of stuff. That isn't to say I'm andewar with some hot solvent. Cap that baby
expert, of course. Now, all I do is organictight and put it in the freezer. Hopefully,
crystals that aren't air or moistureit will take a few days for the solvent to
sensitive. So this isn't an exhaustive reviewget down to zero, at which point you can
by any means. For a more in depth guide, Iextract your vial and MAYBE see some
suggest  you  look  at  this.crystals. If you're lucky enough to work
where there is a -72 chill room (or -20 or
First thing I usually try is to do a-50) (a deep freezer works too, if you have
vial-in-vial vapor diffusion. This is athe space) where you can just plop it in. (If
simple little ditty in which one places theirit's owned by the asshole biochemists, tell
compound inside of a small vial in a solventthem it's DI/DI sugar water. It's alright to
it is reasonably soluble in and putting it inlie to biochemists. They'll believe anything
a larger vial filled with volatile solventif you tell them entropy made you do it.)
that it is not soluble in at all. OvertimeI've never tried to make crystals at the low
the volatile solvent will evaporate up andtemperature. I can't imagine mounting them
into the less volatile solvent and slowlywould be that fun.
dissolve and diffuse in there. As the



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