Hi, here is a simple method for you if you have linux and a xyz file.

If you dont have a xyz file, then you can find it very easily online for standard fullerenes.

Open the xyz file with your text editor. Change the C with B and N as appropriate.

Then open a terminal window and use open babel.

the command is: babel -i xyz input.xyz -o pdb output.pdb

if you have any problem you can ask again. and if you dont have linux I ll create it for you.

Hi tnx

but now i m not in our lab and have not linux, can i beg you to creat for me?

There are a few different configurations possible for the structure you are asking.

So I dont want to make one that s not the one you want,

Instead, you can go to this website: http://www.nanotube.msu.edu/fullerene/fullerene.php?C=72

download the xyz file, modify it as you wish with B and C.

And here is an online converter from xyz to pdb:

http://nl.webqc.org/molecularformatsconverter.php

Hope this help, cheers

Dear Sarah

Did you can get what you were looking for (N36B36)?

yes, my friend asked me expose to discussion about this,she understood i think.