Dear user,

I have calculated the Mulliken charge population for Carbon nanotube using
the keyword WriteMullikenPop 1 and now I want to calculate Hirshfeld charge
population as well as Mulliken population. For Hirshfeld population I have
used the Keyword WriteHirshfeldPop .true.

First of all I have calculated the Hirshfeld population by using both
keywords “WriteMullikenPop 1”and “WriteHirshfeldPop .true.” And found the
following result-

………………………………………………………………………………….

Hirshfeld Net Atomic Populations:

Atom # Qatom Species

1 0.013 C

2 -0.025 C

3 0.013 C

4 -0.025 C

5 -0.025 C

6 0.013 C

7 -0.025 C

8 0.013 C

9 0.013 C

10 0.013 C

11 0.013 C

12 0.013 C

…………………………………………………………………………………………………………….

But when I have used only the keyword “WriteHirshfeldPop .true.”, I have
found now the result is quite different.

……………………………………………………………………………………………………..

Hirshfeld Net Atomic Populations:

Atom # Qatom Species

1 0.012 C

2 -0.025 C

3 0.012 C

4 -0.025 C

5 -0.025 C

6 0.012 C

7 -0.025 C

8 0.012 C

9 0.012 C

10 0.012 C

11 0.012 C

12 0.012 C


 ………………………………………………………………………………………………………………………………….

Now my question is-

Which of the following method is applicable for evaluation of Hirshfeld
charge population?

Could anybody help me to solve this problem?

 Thanks in advance,

Barnali Bhattacharya,

Assam university,India

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