Kopyra J, Rabilloud F, Abdoul-Carime H
Faculty of Exact and Natural Sciences, Siedlce University of Natural Sciences and Humanities, 08-110 Siedlce, Poland.
Univ. Lyon, Univ. Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France.
J Chem Phys. 2020 Sep 28;153(12):124302. doi: 10.1063/5.0023716.
Dissociative electron attachment is a mechanism found in a large area of research and modern applications. This process is initiated by a resonant capture of a scattered electron to form a transitory anion via the shape or the core-excited resonance that usually lies at energies above the former (i.e., >3 eV). By studying experimentally and theoretically the interaction of nickel(II) (bis)acetylacetonate, Ni(II)(acac), with low energy electrons, we show that core-excited resonances are responsible for the molecular dissociation at unusually low electron energies, i.e., below 3 eV. These findings may contribute to a better description of the collision of low energy electrons with large molecular systems.
解离电子附着是在广泛的研究领域和现代应用中发现的一种机制。这个过程是由散射电子的共振捕获引发的，通过通常位于前者能量之上（即>3电子伏特）的形状或核激发共振形成一个瞬态阴离子。通过对镍（II）双乙酰丙酮配合物（Ni(II)(acac)）与低能电子相互作用进行实验和理论研究，我们表明核激发共振是导致在异常低的电子能量（即低于3电子伏特）下分子解离的原因。这些发现可能有助于更好地描述低能电子与大分子体系的碰撞。
