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1989shaonan

金虫 (小有名气)

[求助] 求助:PCM “tessalation”怎么描述?

采用pcm优化构型,审稿人提问让给出pcm的“tessalation”。我觉得可能指的是“tesselation”。

gaussian03软件只给出了tsare=area 的默认值0.2,但没有给出tsnum的默认值,网上一些资料提到tsnum默认是60,不知是否如此?

非常感谢帮助!
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1989shaonan

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引用回帖:
2楼: Originally posted by paramecium86 at 2019-07-09 21:03:59
老版本的高斯的手册里会提到 默认的TSNUM是60.

高斯手册的原文
SELECTING THE POLYDEDRON FOR THE SURFACE TESSERAE

In standard calculations the surface of each sphere is subdivided in 60 triangular  ...

谢谢!
3楼2019-07-10 10:16:51
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paramecium86

版主 (著名写手)

老版本的高斯的手册里会提到 默认的TSNUM是60.

高斯手册的原文
SELECTING THE POLYDEDRON FOR THE SURFACE TESSERAE

In standard calculations the surface of each sphere is subdivided in 60 triangular tesserae, by projecting the faces of an inscribed pentakisdodecahedron. Other polyhedra with a different number of faces can be used, to get rougher or finer descriptions of the surface, by using one of these keywords:

TSNUM=N       
Sets the number of tesserae on each sphere (60 is the default for the usual pentakisdodecahedron). The program automatically selects the polyhedron with the closest number of faces to the specified value of N.

TSARE=area       
Specifies the area of the tesserae, in units of Å2 (0.4 is a typical value). The program automatically determines the best polyhedron for each sphere.

EXAMPLE PCM INPUT

The following Gaussian job performs a PCM energy calculation on the molecule HF using the solvent cyclohexane. The calculation is performed at a temperature of 300 K using a scaling factor for all atoms except acidic hydrogens of 1.21 and a value of 70 tesserae per sphere:

#
HF/6-31++G(d,p) SCF=Tight SCRF=(PCM,Read,Solvent=Cyclohexane) Test  
PCM SP calculation on hydrogen fluoride  

0,1
H
F 1 R  

R=0.9161  

TABS=300.0
ALPHA=1.21
TSNUM=70   

manual的链接

http://www.uam.es/departamentos/ ... sian98/00000474.htm
2楼2019-07-09 21:03:59
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