Electronic Spectroscopy of Metal Ion Complexes

化学部的实验物理化学项目正在支持邓肯教授对（M+）(L)亚x形式的金属离子气相配合物的研究，其中M是铝、钙或镁等金属，L是小分子。脉冲激光汽化技术用于在分子束环境中产生离子复合物。飞行时间质谱、激光光解、激光诱导荧光和阈值电离光电子能谱将用于获取这些物质的结构、电子态能、振动频率和解离能等信息。将对某些系统进行从头计算，以便与实验进行比较。在气相中，金属离子能够附着在小分子上，形成具有不同寻常的键合和能量特征的复合物。为了更好地理解将这些复合物结合在一起的力的本质，这个项目正在光谱和光化学实验中对它们进行研究。从这些研究中获得的数据将有助于理解涉及含金属等离子体、金属溶液和生物金属中心的过程。

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.