Reactions of Pt+ with H2, D2, and HD: Effect of lanthanide contraction on reactivity and thermochemistry
作者:Xiao-Guang Zhang、P. B. Armentrout
DOI:10.1063/1.1456028
日期:2002.4
is used to examine the kinetic energy dependence of reactions of the third-row transition metal cation, Pt+, with molecular hydrogen and its isotopologs. A flow tube ion source produces Pt+ ions in its electronic ground state term and primarily in the lowest spin–orbit level. Corresponding state-specific reaction cross sections are obtained. Modeling of the endothermic reaction cross sections yields
引导离子束串联质谱仪用于检查第三行过渡金属阳离子 Pt+ 与分子氢及其同位素的反应的动能依赖性。流管离子源在其电子基态项中产生 Pt+ 离子,主要在最低自旋轨道能级中。获得了相应的状态特定反应截面。吸热反应截面的建模产生 D0(Pt+–H)=2.81±0.05 eV (271±5 kJ/mol) 的 0 K 键解离能。实验热化学与此处和文献中进行的从头计算一致。理论还提供了这些物质的电子结构,并用于检查反应势能表面。与 HD 反应的结果提供了对反应机制的深入了解,并表明晚期金属离子 Pt+ 主要通过直接机制进行反应。将这种第三排过渡金属体系的结果与第一排和第二排共...