Electronic Spectroscopy of Metal Ion Complexes

化学系的实验物理化学计划支持邓肯教授对（M+）（L）sub-x形式的金属离子的气相络合物的研究，其中M是金属，如铝，钙或镁，L是小分子。 脉冲激光蒸发技术用于在分子束环境中产生离子络合物。 飞行时间质谱，激光光解离，激光诱导荧光，阈值电离光电子能谱将用于获得有关这些物种的结构，电子态能量，振动频率和解离能的信息。 某些系统的从头计算将与实验进行比较。 在气相中，金属离子能够附着在小分子上，形成具有不寻常的键合和能量特征的复合物。 本项目正在光谱学和光化学实验中对这些进行研究，以便更好地了解将复合物结合在一起的力的性质。 从这些研究中获得的数据将有助于理解含金属等离子体，金属溶液和生物金属中心所涉及的过程。

The Experimental Physical Chemistry Program of the Chemistry Division is supporting research by Professor Duncan on gas-phase complexes of metal ions of the form (M+)(L)sub-x, where M is a metal such as aluminum, calcium, or magnesium, and L is a small molecule. Pulsed laser vaporization techniques are used to produce ion complexes in a molecular beam environment. Time-of-flight mass spectrometry, laser photodissociation, laser-induced fluorescence, and threshold ionization photoelectron spectroscopy will be used to obtain information about the structures, electronic state energies, vibrational frequencies, and dissociation energies of these species. Ab initio calculations of certain systems will be carried out for comparison with experiment. In the gas phase metal ions are capable of attaching to small molecules, forming complexes with unusual bonding and energy characteristics. These are being studied in this project in spectroscopic and photochemical experiments in order to better understand the nature of the forces holding the complexes together. The data obtained from these studies will assist in understanding processes involved in metal-containing plasmas, metal solutions, and biological metal centers.