<div>Hi Roman,</div>
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<div>I have a program that randomly add cation and anion molecules, as well any molecules in a cubic box. If you want, I can send you by mail, or if you want, you can visited the homepage:</div>
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<div><a href="http://www.ime.unicamp.br/~martinez/packmol/">http://www.ime.unicamp.br/~martinez/packmol/</a></div>
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<div><br clear="all">Packmol creates an initial point for molecular dynamics simulations by packing molecules in defined regions of space. The packing guarantees that short range repulsive interactions do not disrupt the simulations.
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<div>Cheers,</div>
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<div>Luciano<br>-- <br>### Luciano Tavares da Costa ###<br>## MSc. Eng. Químico<br>## 100 % Linux<br>############################# </div>