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The cooperativity of cation-pi and pi-pi interactions

机译:阳离子-pi和pi-pi相互作用的协同作用

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摘要

MP2/6-311++G(d, p) calculations have been carried out on binary complexes formed by two aromatic benzene rings or a benzene ring and a cation (viz. Li+, Na+, K+, NH4+, PH4+, OH3+ and SH3+) to gauge at pi-pi and cation-pi interaction energy in these representative complexes. Computations on cation-pi-pi complexes demonstrate that cation-pi and pi-pi interactions work in concert. Cooperativity which reflects the non-additivity of the interactions is evaluated. Atoms-In-Molecules (AIM) analysis has been performed to evaluate the changes in electron density at the cage critical point characterizing pi-pi and cation-pi interactions in the model systems.
机译:已对由两个芳族苯环或一个苯环与一个阳离子(即Li +,Na +,K +,NH4 +,PH4 +,OH3 +和SH3 +)形成的二元配合物进行了MP2 / 6-311 ++ G(d,p)计算)测量这些代表性络合物中的pi-pi和阳离子-pi相互作用能。对阳离子-pi-pi配合物的计算表明,阳离子-pi和pi-pi相互作用协同工作。评价反映相互作用的非可加性的合作性。已经进行了原子分子(AIM)分析,以评估表征模型系统中pi-pi和阳离子-pi相互作用的笼子临界点电子密度的变化。

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