From NWChem
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Gets Around
Threads 18
Posts 133
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| 7:29:11 PM PDT - Thu, Jul 3rd 2014 |
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What metals are involved? HF and minimal basis sets will probably not do well with transition metals. Both HF and DFT are going to be rather slow with hundreds of atoms.
I would actually recommend that you try modern semi-empirical methods PM6 or PM7. They will be much faster than HF or DFT calculation and offer geometries that rival DFT and surpass HF with small basis sets in most cases. If you are an academic not-for-profit user you can get MOPAC2012, which implements these methods, for free after registration: http://openmopac.net/download-c.html
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