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Of peroxyformic acid with water molecules: A first-principles study

机译:过氧甲酸与水分子的关系:第一性原理研究

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The present article comprises a theoretical study of structures and energetics of the lowest energy conformers of peroxyformic acid (PFA) and its hydrated variants, viz. PFA center dot center dot center dot(H2O)(n) (n=1-4), at the molecular level. We have employed two different ab initio quantum chemical methods, viz. restricted Hartree-Fock (RHF) and the second-order Mlller-Plesset (MP2) perturbation theory with the basis sets 6-31G(d, p) and 6-311++G-(2d, 2p). Modifications in the structure as well as vibrational frequencies of PFA brought about by successive addition of H2O molecules are also discussed. Cooperativity of hydrogen bonding in these clusters can be gauged through a detailed many body interaction energy analysis.
机译:本文包括对过氧甲酸(PFA)及其水合变体最低能量构象体的结构和能量的理论研究。在分子水平上的PFA中心点中心点中心点(H2O)(n)(n = 1-4)。我们采用了两种不同的从头算量子化学方法,即。约束Hartree-Fock(RHF)和二阶Mlller-Plesset(MP2)摄动理论,其基集为6-31G(d,p)和6-311 ++ G-(2d,2p)。还讨论了通过连续添加H2O分子引起的PFA的结构变化和振动频率。这些簇中氢键的协同作用可通过详细的多体相互作用能分析来衡量。

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