medium-rare I’d say, in my experience. I.e. not that common, but also not very rare. We’ve had it happen.
I guess if the alternative crystal form is smaller or diffracts badly, it often is never discovered if it is really a different crystal form or just less-perfect crystals of the same form.
Mark J van Raaij
Dpto de Estructura de Macromoleculas
Centro Nacional de Biotecnologia - CSIC
c/Darwin 3
E-28049 Madrid, Spain
tel. (+34) 91 585 4616
http://wwwuser.cnb.csic.es/~mjvanraaij
> On 24 Jun 2016, at 10:21, Murpholino Peligro <[log in to unmask]> wrote:
>
> Hi everybody.
> I just was curious ....
> How often it is to find two or more crystalline forms in a single crystallization drop?
> Is it very common or is it way to rare?
>
> Thanks for your answers
> MP
>
>
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