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長(zhǎng)安月新蟲(chóng) (小有名氣)
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[求助]
高斯求助,這該如何翻譯成中文? 已有1人參與
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沒(méi)接觸過(guò)量子化學(xué)這一塊,但論文內(nèi)容又涉及到絕對(duì)構(gòu)型的計(jì)算,自己嘗試著翻譯,但什么什么基組、什么水平、什么理論等等的不知道該如何翻譯,故求專業(yè)的翻譯。 ECD Calculations. Calculated ECD spectra were obtained using the time-dependent density functional theory (TDDFT) employing the B3LYP functional using Gaussian 09, and were analyzed using GUIs GaussView (version 5.0). The calculations were performed at the HF/6-31G level in the gas phase for the initial optimization. The minimum geometries were fully optimized at the B3LYP/6-311G (d) level in the gas phase to yield more accurate conformers. The ECD spectra were simulated at the B3LYP/6-311G (d,p) level in methanol. The calculated ECD curves were generated using SpecDis with a σ of 0.2 eV. Absolute Configuration of XXX Enantiomers. The absolute configuration of a chiral molecule can could be deduced from its ECD spectrum. In this study, the TDDFT method was used to calculate the ECD spectra of XXX. By comparing the experimental ECD spectra to the calculated spectra, the absolute configurations of the XXX enantiomers were determined. The overall ECD curves obtained by the TDDFT calculations (Figure 2A) and those obtained experimentally (Figure 2B) were similar. In general, individual enantiomers exhibited specific CD signals at given wavelengths. The first eluted enantiomer was confirmed as the (–)-enantiomer, whereas the second enantiomer was the (+)-enantiomer, as noted by the region ranging from 200 nm to 500 nm (Figure 2B). Through the combination of computed and experimental ECD spectra, peak 1 and peak 2 in Figure 3 were assigned as S-(–)-XXX and R-(+)-XXX, respectively. |
新蟲(chóng) (小有名氣)
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本帖內(nèi)容被屏蔽 |
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圓二色譜的計(jì)算采用的是高斯09程序含時(shí)密度泛函理論下的B3LYP泛函,分析采用圖形化的高斯view5.0。在HF方法和6-31g基組的水平下做氣相初始結(jié)構(gòu)優(yōu)化。用B3LYP/6-311G(d)水平獲得氣相條件下的更準(zhǔn)確構(gòu)象。在B3LYP/6-311G(d,p)水平下模擬甲醇中的圓二色譜。用segama為0.2eV的SpecDis計(jì)算出的ECD曲線。 應(yīng)該夠了吧! |


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