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★ ★ ★ 小木虫(金币+0.5):给个红包,谢谢回帖交流 zhou2009(金币+2): 2011-01-25 08:19:55
If the system is closed shell, RHF, ROHF, UHF give exactly the same result.
UHF gives lower energy than ROHF, but UHF has well known spin contamination problem, one need to check if the spin multiplicity is correct |
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