Anion photoelectron circular dichroism of chiral metal cluster complexes

本研究的目的是研究手性阴离子分子和金属团簇配合物的光电子圆二色性。手性金属簇形成立体选择性化学转化的机会，例如不对称氢化。然而，当在气相中产生时，总是形成团簇的外消旋混合物，到目前为止还没有直接检测到自由金属团簇的手性。研究阴离子手性金属团簇配合物所发射的光电子的圆二色性，将有助于研究这些由团簇与手性分子反应而形成的金属团簇配合物的绝对构型。我们的目标是研究配体如何将手性压印到金属团簇上，例如小的金团簇。此外，氨基酸的冷分子阴离子将在原理证明研究中表征。

The goal of the studies is to investigate the photoelectron circular dichroism of chiral anionic molecules and metal cluster complexes. Chiral metal clusters form the opportunity for stereo-selective chemical transformations, e.g. asymmetric hydrogenations. However, when produced in the gas-phase, always racemic mixtures of clusters are formed and so far there has been no direct detection of the chirality of free metal clusters. The study of circular dichroism of photoelectrons emitted from anionic chiral metal cluster complexes shall give information on the absolute configuration of these metal cluster complexes formed by reaction of clusters with chiral molecules. We aim to investigate how the ligand can imprint the chirality onto the metal clusters, e.g. small gold clusters. Further, cold molecular anions of amino acids will be characterized in a proof-of-principle study.