So I've being playing for a few days with the minimization of structures in 
Jmol, and I'm very 
happy with the result; I think it will make an excellent educational tool. I'm 
feeding Jmol with 
2D structures drawn and then exported into MOL format. 
(All this runs within a single web page, though I'm not ready yet to go public 
with it.)

One thing I miss, and would be interesting to have, but likely not trivial to 
implement, is 
retention of the stereochemistry.
Despite being 2D, formula drawing programs allow to put wedge bonds (up/down), 
and at 
least  JChemPaint exports them correctly into MOL format. However, since the Z 
coordinate 
is zero for all atoms, that stereo info is lost.

I can think of a way to set some positive or negative Z value on each atom 
depending on 
the type of stereo bond (even using Javascript) and so modifiy the MOL before 
giving it to 
Jmol, but then I'd need that Jmol retains that configuration, which it is  not 
doing right now 
upon minimization.

I realize the implications for the calculation are heavy, and it may even be 
undesirable to 
have it active by default --could be a toggle option--.

Any insights?


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