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444239852

银虫 (正式写手)

[求助] 关于布局分析

各位大侠,小弟最近在计算晶体的布局分析时得到Hirshfeld Charge (e),但是不知道Hirshfeld Charge (e)是什么意思?其中的正负号代表什么呢? 麻烦各位,小弟不胜感激
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444239852

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就没有人知道吗?版主帮忙解决下可以吗?
4楼2013-10-08 17:10:20
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lq6865387

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有志成年

【答案】应助回帖

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444239852: 金币+2, 有帮助 2013-10-08 11:37:37
identation: 金币+1, 谢谢指教 2013-10-08 13:16:38
你所用的是Hirshfeld Charge (e)  不过目前文章普遍用的是它上面的 Mulliken charge numer 你可以研究研究这个
Better Late Than Never
2楼2013-10-08 10:57:43
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444239852

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引用回帖:
2楼: Originally posted by lq6865387 at 2013-10-08 10:57:43
你所用的是Hirshfeld Charge (e)  不过目前文章普遍用的是它上面的 Mulliken charge numer 你可以研究研究这个

你说的电荷数怎么看呢?
3楼2013-10-08 11:38:06
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pigrass

专家顾问 (著名写手)

伊卡斯特的小猪

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感谢参与,应助指数 +1
444239852: 金币+5, 有帮助 2013-10-09 21:00:52
sunyang1988: 金币+1, 谢谢交流 2013-10-11 15:49:25
help里的解释

Hirshfeld charges (Hirshfeld, 1977) are defined relative to the deformation density, this is the difference between the molecular and unrelaxed atomic charge densities.

For quantitative descriptions of charge distributions in molecules or solids it is convenient to divide a system into well-defined atomic fragments. A general and natural choice is to share the charge density at each point between the atoms, in proportion to their free-atom densities at the corresponding distances from the nuclei. This prescription yields well-localized bonded-atom distributions each of which closely resembles the molecular density in its vicinity. Integration of the atomic deformation densities - bonded minus free atoms - defines the net atomic charges and multipole moments which concisely summarize the molecular charge reorganization. This permits calculation of the external electrostatic potential and the interaction energy between molecules or between parts of the same molecule.
#有问题发论坛,不接受私聊#爱晶体,爱MaterialsStudio#MS专辑点击右边#http://emuch.net/taotie/41673.html#物性数据#http://webbook.nist.gov/chemistry/#
5楼2013-10-09 16:58:28
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