首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Why does argon bind to deuterium? Isotope effects and structures of Ar center dot H5O2+ complexes
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Why does argon bind to deuterium? Isotope effects and structures of Ar center dot H5O2+ complexes

机译:氩为何会与氘结合? Ar中心点H5O2 +配合物的同位素效应和结构

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Recently, we reported the spectrum of Ar-D4HO2+ [McCunn; et, al. J. Phys. Chem. B 2008, 112, 321], and here, we extend that work to include the Ar center dot H4DO2+ isotopologue in order to explore why the Ar atom has a much greater propensity for attachment to a dangling OD group than it does for OH, even when many more of the latter binding sites are available. Calculated (MP2/6-311+G(d,p) level of theory/basis) harmonic frequencies reproduce the observed multiplet patterns of OH and OD stretches and confirm the presence of various isomers arising from the different Ar binding sites. The preferential bonding of Ar to OD is traced to changes in the frequencies of the wag and rock modes of the H5O2+ moiety rather than to shifts in the oscillator that directly binds the Ar atom.
机译:最近,我们报道了Ar-D4HO2 + [McCunn;等。 J.物理化学[B 2008,112,321],在这里,我们将这项工作扩展到包括Ar中心点H4DO2 +同位素同位素,以探究为什么Ar原子比OH甚至更容易附着到悬挂的OD基上当后面更多的结合位点可用时。计算得出的(理论值/基础值的MP2 / 6-311 + G(d,p)水平)谐波频率可再现观察到的OH和OD拉伸的多重峰模式,并确认存在由不同的Ar结合位点引起的各种异构体。 Ar与OD的优先结合可追溯到H5O2 +部分的摇摆和摇滚模式的频率变化,而不是直接与Ar原子结合的振荡器中的位移。

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