首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Experimental and computational study of HXeY center dot center dot center dot HX complexes (X, Y=Cland Br): An example of exceptionally large complexation effect
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Experimental and computational study of HXeY center dot center dot center dot HX complexes (X, Y=Cland Br): An example of exceptionally large complexation effect

机译:HXeY中心点中心点中心点HX配合物(X,Y = Cland Br)的实验和计算研究:异常大的络合效应的一个例子

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摘要

The complexes of xenon hydrides HXeY (Y = Cl and Br) with hydrogen halides HX (X = Cl and Br) have been studied both computationally and experimentally in a xenon matrix. The experiments revealed three new complexes: HXeBr center dot center dot center dot HBr, HXeBr center dot center dot center dot HCl, and HXeCl center dot center dot center dot HCl. The experimental assignments were done on the basis of the strong H-Xe stretching absorption of HXeY (Y = Cl and Br) molecules and supported by theoretical results. We experimentally obtained monomer-to-complex blue-shifts of this vibrational mode for all the studied systems (up to similar to 150 cm(-1)). The electronic structure calculations revealed three local structures for each HNgY center dot center dot center dot HX complexes and their computed interaction energies varied between -460 and -2800 cm(-1). The computational estimates of the vibrational shifts were in agreement with the experimental values. We also found possible experimental absorption belonging to HXeBr center dot center dot center dot(HBr)(2) trimer and its vibrational shift (+245 cm(-1)) is similar to the computational estimate of a cyclic ternary complex (+252 cm(-1)).
机译:已经在氙气矩阵中通过计算和实验研究了氢化氙HXeY(Y = Cl和Br)与卤化氢HX(X = Cl和Br)的配合物。实验揭示了三个新的络合物:HXeBr中心点中心点中心点HBr,HXeBr中心点中心点中心点HCl和HXeCl中心点中心点中心点HCl。实验任务是基于HXeY(Y = Cl和Br)分子的强H-Xe拉伸吸收进行的,并得到理论结果的支持。对于所有研究的系统,我们通过实验获得了这种振动模式的单体到复杂的蓝移(最大类似于150 cm(-1))。电子结构计算揭示了每个HNgY中心点中心点中心点HX络合物的三个局部结构,其计算的相互作用能在-460和-2800 cm(-1)之间变化。振动位移的计算估计与实验值一致。我们还发现属于HXeBr中心点中心点中心点(HBr)(2)三聚体的可能实验吸收,其振动位移(+245 cm(-1))类似于循环三元复合物(+252 cm)的计算估计(-1))。

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