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北京石油化工学院2026年研究生招生接收调剂公告
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xushuhong

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[交流] 【求助】Gaussian03 中怎么计算温度 已有1人参与

Gaussian03 中若是想在优化的过程中加上温度,应该加什么关键词。若是想计算不同pH下的构型,可以吗?
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yzcluster(金币+3): 2010-04-09 23:01
freq=ReadIsotopes
Specify alternate temperature, pressure, and/or isotopes (the defaults are 298.15 K, 1 atmosphere, and the most abundant isotopes). This information appears in a separate input section having the format:

temp pressure [scale]                                          Must be real numbers.
isotope mass for atom 1
isotope mass for atom 2
...
isotope mass for atom n
where temp, pressure, and scale are the desired temperature, pressure, and an optional scale factor for frequency data when used for thermochemical analysis (the default is unscaled). The remaining lines hold the isotope masses for the various atoms in the molecule, arranged in the same order as they appeared in the molecule specification section. If integers are used to specify the atomic masses, the program will automatically use the corresponding actual exact isotopic mass (e.g., 18 specifies O18, and Gaussian uses the value 17.99916).
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2楼2010-04-09 22:34:15
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