Hello,

I am trying to build some 3D porous crystal structures by using materials studio.

I did not face problem with 2D structures by using Build Crystal' and then giving the parameters, and replacing the atoms with fragments i.e benzene, biphenyl etc.

However for creating 3D structures with using the same method I have faced some problems. Lets say I convert structure to P1, then  I add the fragment molecule benzene, I allign it with the bonds, when I conver it to actual symetry by reulding the crystal, it is giving me multiple benzenes around the same centroid, maybe 10 of them or even more. Please see the attached picture. How I can overcome this, is there any trick here?

Thank you in advance,

Timur.