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2023年12月22日发(作者:format short)

利用Gauss和Molden查看分子的轨道和电子密度等势图

A——Molden的安装:

由于Molden的操作环境是Unix,因此需要在windows环境下安装X-Win32Pro这个虚拟环境,称为X-Server,然后才可以在windows下运行molden。

B——高斯文件:

要查看轨道需要输入文件把分子的轨道全部求出并写在out文件里,利用pop=full 和gfinput关键字(run a single point calculation at the desired level of theory including the pop=full and

gfinput keywords. Only then will MOLDEN find all required information in the output file. 参考网址)以formaldehyde为例,下面是输入文件:

#P HF/STO-3G scf=tight pop=full gfinput

HF/STO-3G//HF/STO-3G sp formaldehyde

0 1

C1

O2 1 r2

H3 1 r3 2 a3

H4 1 r3 2 a3 3 180.0

r2=1.21672286

r3=1.10137241

a3=122.73666566

然后启动Molden,如图:点击Read,打开上面高斯文件的运行结果out文件,

如图,然后点击Dens. Mode,

如图所示:

这个contour图我也不太清楚是什么意思,从输出看应该是电子密度图,是HOMO的电子密度图

要查看各个轨道点击Orbital,如下图:

上面的contour图是HOMO的电子密度图。

(When using Molden with GAUSSIAN 94/98/03 the following keywords are required on

the GAUSSIAN 94/98/03 inputfile:

#P GFINPUT IOP(6/7=3)

#P switches on printing of SCF convergence, GFINPUT switches on printing of Basis Set

info, and IOP(6/7=3) switches on printing of all MO's. GAUSSIAN 94/98 per default uses

the redundant coordinate’s optimization procedure resulting in only cartesian coordinates

being available on the output file. Molden will covert these into a z-matrix which in general

will have lost the dummys and therefore symmetry at the z-matrix level. Use the gaussian

keyword opt=z-matrix to get z-matrices on the output. 参考网址)


本文标签: 文件 轨道 分子 查看 需要