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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Accurate Heats of Formation for BF_n, BF_n~+, BCl_n, and BCl_n~+ for n = 1 - 3
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Accurate Heats of Formation for BF_n, BF_n~+, BCl_n, and BCl_n~+ for n = 1 - 3

机译:对于n = 1-3的BF_n,BF_n〜+,BCl_n和BCl_n〜+的精确形成热

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摘要

Accurate heats of formation are computed for BF_n, BF_n~+, BCl_n, and BCl_n~+, for n = 1 - 3. The geometries and vibrational frequencies are determined at the B3L YP level of theory. The energetics are determined at the CCSD(T) level of theory. Extrapolation to the basis set limit is discussed. Spin-orbit, scalar relativistic, and core-valence correlation are accounted for. The temperature dependence of the heat of formation, heat capacity, and entropy is computed for the temperature range 300-4000 K and fit to a polynomial.
机译:对于n = 1-3,计算了BF_n,BF_n〜+,BCl_n和BCl_n〜+的精确地层热量。几何形状和振动频率在理论上的B3L YP级别确定。能量是在CCSD(T)的理论水平上确定的。讨论了对基本集极限的外推。自旋轨道,标量相对论和核心价相关被考虑。在300-4000 K的温度范围内计算地层热,热容和熵的温度依赖性,并拟合多项式。

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