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Theoretical study on the hydration of hydrogen peroxide in terms ofab initio method and atom-bond electronegativity equalization method fused into molecular mechanics
來源:于春陽助理研究員個人網(wǎng)站 發(fā)布日期:2014-03-23
作者:Chun-Yang Yu, Li-Dong Gong, Zhong-Zhi Yang*
關(guān)鍵字:ABEEM/MM model,ab initio calculation, hydrogen peroxide, water
論文來源:期刊
具體來源:Front. Chem. China, 6, 287–299, 2011.
發(fā)表時間:2011年
In this paper, the interaction between hydrogen peroxide (HP) and water were systemically studied by atom-bond electronegativity equalization method fused into molecular mechanics (ABEEM/MM) and ab initio method. The results show that the optimized geometries, interaction energies and dipole moments of hydrated HP clusters HP(H2O)n (n=1–6) calculated by ABEEM/MM model are fairly consistent with the MP2/aug-cc-pVTZ//MP2/aug-cc-pVDZ results. The ABEEM/MM results indicate that n= 4 is the transition state structure from 2D planar structure to 3D network structure. The variations of the average hydrogen bond length with the increasing number of water molecules given by ABEEM/MM model agree well with those of ab initio studies. Moreover, the radial distribution functions (RDFs) of water molecule around HP in HP aqueous solution have been analyzed in detail. It can be confirmed that HP is a good proton donor and poor proton acceptor in aqueous solution by analysis of the RDFs.
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