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小窗夜梦

金虫 (小有名气)

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[求助] 构型优化问题

All geometry optimizations were performed at the MP2
13
level
of theory. To ensure that the optimized geometries were minima
on the potential energy surface (PES), Hessians (energy second
derivatives) were calculated for each optimized geometry. A
positive definite Hessian indicates a minimum on the potential
energy surface. Especially for three ligands, an exhaustive search
was carried out from various starting geometries, in order to
find other minima on the potential energy surface. No additional
minima were found.

这一段话怎么理解呢?
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【答案】应助回帖

感谢参与,应助指数 +1
这个还要怎样理解??
2楼2013-10-11 16:31:23
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