All the structures were optimized at MP2(full)(second-order Møller–Plesset perturbation theory) level of theory which does not assume a frozen core. The Dunning basis set used for this level of theory is aug-cc-PVTZ(augmented correlation-consistent polarized valence triple-zeta basis set).老师, 这里的意思是使用的是全电子机组,没有使用赝势?MP2(full)比起M062x计算量怎么样
大家能不能帮忙看下这个意见是啥意思?Comment 5 asked the authors for a justification of their choice of basis set. Instead of providing a justification, the authors repeated their calculations with a different basis set. However, since only 6-311++G(3df,3pd) in combination with LANL2DZ was exchanged for TZVP in combination with SDD, the issue remains.Why was a small, double-zeta basis set (SDD) used with a larger basis set (TZVP) only on the La atom?非常感谢
老师们好!本人初次接触高斯,想寻找乙烯与丁二烯发生Diels Alder反应的过渡态结构。在高斯VIEW里绘制过渡态猜想结构如图所示[图片],然后设置参数如下[图片],最后跑出来虚频只有一个负数,我自以为过渡态跑出来了,但是当我拿虚频对应的过渡态结构做IRC时,出现了错误“Problem with the distance matrix”,我查看了下过渡态优化结果,如图所示[图片],感觉这直接变成了产物结构。请问老师们,这是不是我猜想的过渡态结构不对造成的?我该怎么办?