Petersen Finn, Lautenschläger Irene, Schlimm Alexander, Flöser Benedikt M, Jacob Hanne, Amirbeigiarab Reihaneh, Rusch Talina R, Strunskus Thomas, Magnussen Olaf, Tuczek Felix
Institute for Inorganic Chemistry, Christian-Albrechts-University Kiel, Max-Eyth-Str.2, 24118 Kiel, Germany.
Institute of Experimental and Applied Physics, Leibnizstraße 11-19, 24118 Kiel, Germany.
Dalton Trans. 2021 Jan 27;50(3):1042-1052. doi: 10.1039/d0dt03549a.
Transition metal complexes form the basis for small molecule activation and are relevant for electrocatalysis. To combine both approaches the attachment of homogeneous catalysts to metallic surfaces is of significant interest. Towards this goal a molybdenum tricarbonyl complex supported by a tripodal phosphine ligand was covalently bound to a triazatriangulene (TATA) platform via an acetylene unit and the resulting TATA-functionalised complex was deposited on a Au(111) surface. The corresponding self-assembled monolayer was characterised with scanning tunnelling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and near-edge X-ray absorption fine structure (NEXAFS). The vibrational properties of the surface-adsorbed complexes were investigated with the help of infrared reflection absorption spectroscopy (IRRAS), and the frequency/intensity changes with respect to the bulk spectrum were analysed. A full vibrational analysis was performed with the help of DFT.
过渡金属配合物构成了小分子活化的基础，并且与电催化相关。为了将这两种方法结合起来，将均相催化剂附着到金属表面具有重大意义。为了实现这一目标，一种由三脚架膦配体支撑的三羰基钼配合物通过乙炔单元共价连接到三氮杂三苯并菲（TATA）平台上，然后将所得的TATA功能化配合物沉积在Au(111)表面。用扫描隧道显微镜（STM）、X射线光电子能谱（XPS）和近边X射线吸收精细结构（NEXAFS）对相应的自组装单分子层进行了表征。借助红外反射吸收光谱（IRRAS）研究了表面吸附配合物的振动特性，并分析了相对于体相光谱的频率/强度变化。在密度泛函理论（DFT）的帮助下进行了全面的振动分析。
