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首页> 外文期刊>ACS catalysis >Water Participation in Catalysis: An Atomistic Approach to Solvent Effects in the Catalytic Isomerization of Allylic Alcohols
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Water Participation in Catalysis: An Atomistic Approach to Solvent Effects in the Catalytic Isomerization of Allylic Alcohols

机译:催化作用的水参与:烯丙基醇催化异构化溶剂效应的原子方法

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We study the intermediate of the reaction between a ruthenium complex and 1-propen-3-ol in water using an atomistic approach for gaining information about the conformation and dynamics of complex molecules in aqueous solution, which combines density-functional-theory-based ab initio molecular dynamics and neutron scattering data based on empirical potential structure refinement simulations. We apply our method to the study of the water-soluble eta(2)-allylic complex [RuCp(exo-eta(CH2)-C-2=CH-CH2-OH)(PTA)(2)](+) (2) (PTA = 1,3,5-triaza-7-phosphaadamantane), an important intermediate in the isomerization of 1-propen-3-ol into propanal catalyzed by {RuCp(H2O-kO)(PTA)(2)}(+). We identify the factors responsible for the stabilization of a specific conformer of 2 in water solution and we examine the involvement of water molecules in the formation of this species. In particular, we show that long-lived (ca. 10 ps) bonded chains of water molecules play a crucial role in influencing the conformation and, potentially, the chemical reactivity of 2.
机译:我们使用原子方法研究钌络合物和1-Propen-3-OL之间的反应中的反应中间体,用于获得有关水溶液中复合分子的构象和动态的原始方法,其结合了密度函数理论的AB基于经验潜在结构细化模拟的Initio分子动力学和中子散射数据。我们将我们的方法应用于水溶性ETA(2) - allliC复合物[RUCP(EXO-ETA(CH2)-C-2 = CH-CH 2-OH)(PTA)(2)](+)( 2)(PTA = 1,3,5-三氮A-7-磷酰氨烷),在催化丙烷催化的1-丙烯-3- OR的异构化中的重要中间体(RUCP(H2O-KO)(PTA)(2)}。 (+)。我们识别负责稳定2在水溶液中的特定符合特者的因素,并且我们研究水分分子在形成该物种中的累积。特别是,我们表明,在影响构象的情况下,水分子的长寿(CA.10 PS)粘合链在影响锥形和潜在的化学反应性方面发挥着至关重要的作用。

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