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[求助]
求助如何利用高斯計算小分子如納米銀之間的作用力(附期刊原文)
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下面給出期刊原文的描述: Density functional theory (DFT) calculations of Ag–S and Ag–N interaction To study the interaction between Ag–N and Ag–S, we performed DFT calculations on Ag–NHCH3 and Ag–SCH3. The structures of these molecules are shown in Fig. 1 . Although Ag–NHCH3 and Ag–SCH3 differ from Ag–DDA and Ag–DDT, Ag–N interaction in Ag–DDA and Ag-S interaction in Ag–DDT can be expected to be qualitatively similar to that in Ag–NHCH3 and Ag–SCH3,respectively.For each system, two types of calculations were car-ried out: geometry optimization and frequency calculation.All calculations were conducted in Gaussian03 [24] using the Perdew–Burke–Ernzerhof (PBE) functional [25] with a LANL2DZ basis set. The solvent, cyclohexane was treated using the polarized continuum model. Full geometry optimizations were performed without any constraints. The self-consistent field (SCF) conver-gence was 10 −8a.u., the gradient and energy convergence was 10 −4a.u. and 10−5a.u., respectively. Once the geometry optimiza-tion was complete, to ensure the optimized geometry (structure) was indeed an energetic minimum of the system, frequency calculations were then performed and inspected for imaginary frequencies. These calculations are similar to our previous DFT cal-culations on other systems [26,27] 我的問題: 欲計算下面兩個同分異構(gòu)體與銀作用后的能量比較,作用方式是兩個氧同時與銀表面作用,如何在高斯中計算,希望給出詳細(xì)做法和結(jié)果謝謝! 鏈接: http://pan.baidu.com/s/1c08jqY8 密碼: vzb9 |
金蟲 (小有名氣)
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