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High-accuracy thermochemistry of atmospherically important fluorinated and chlorinated methane derivatives

机译:大气中重要的氟化和氯化甲烷衍生物的高精度热化学

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摘要

High-precision quantum chemical calculations have been performed for atmospherically important halomethane derivatives including CF, CF3, CHF2, CH2F, CF2, CF4, CHF, CHF 3, CH3F, CH2F2, CCl, CCl 3, CHCl2, CH2Cl, CCl2, CCl 4, CHCl, CHCl3, CH3Cl, CH2Cl 2, CHFCl, CF2Cl, CFCl2, CFCl, CFCl3, CF2Cl2, CF3Cl, CHFCl2, CHF 2Cl, and CH2FCl. Theoretical estimates for the standard enthalpy of formation at 0 and 298.15 K as well as for the entropy at 298.15 K are presented. The determined values are mostly within the experimental uncertainty where accurate experimental results are available, while for the majority of the considered heat of formation and entropy values the present results represent the best available estimates.
机译:已对大气中重要的卤代甲烷衍生物进行了高精度的量子化学计算,包括CF,CF3,CHF2,CH2F,CF2,CF4,CHF,CHF 3,CH3F,CH2F2,CCl,CCl 3,CHCl2,CH2Cl,CCl2,CCl 4, CHCl,CHCl3,CH3Cl,CH2Cl 2,CHFCl,CF2Cl,CFCl2,CFCl,CFCl3,CF2Cl2,CF3Cl,CHFCl2,CHF 2Cl和CH2FCl。给出了在0和298.15 K时的标准形成焓以及在298.15 K时的熵的理论估计。所确定的值主要在可获得准确实验结果的实验​​不确定性范围内,而对于大多数考虑的地层热和熵值,当前结果代表了最佳的可用估计值。

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