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kaluoyi2008

铁虫 (正式写手)

[求助] 【求助】 unrestricted和restricted-open B3LYP 的区别 已有1人参与

前段投了一篇文章中含部分计算,现在审稿人提问中有一条:
For the description of open-shell clusters, the unrestricted or restricted-open mode of calculation should be mentioned in the computational details.
我计算的体系都是中性不带电荷的,电荷和自选多重度有(0,1)(0, 2)(0,3)这三种情况,计算时在Gauss输入命令行时就是简单的 #P B3LYP
看了一些帖子,我的输入在(0, 2), (0,3)这两种情况Gauss默认的应该是 unrestricted B3LYP就是开壳层的UB3LYP计算
那我在回答审稿人问题时,只要再计算细节中说明 For the open-shell clusters, the unrestricted B3LYP (UB3LYP) was used. 是不是就可以了呢

另外关于什么时候该用UB3LYP 什么时候用UOB3LYP实际上我从来没有搞清楚过。。。
对于电子数目是偶数,但自旋多重度为3的这种体系,用UB3LYP算是没问题的吧

请求诸位大神赐教,感激不尽!~~
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jiangning198511

木虫 (正式写手)

【答案】应助回帖

★ ★
感谢参与,应助指数 +1
kaluoyi2008: 金币+2, ★★★很有帮助, 谢谢! 2014-06-08 23:13:13
你的回答没问题
UB3LYP 有自旋污染
2楼2014-06-08 13:18:16
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