Optical absorption spectroscopy of metal containing molecules

亚利桑那州立大学的蒂莫西·斯泰姆勒得到了实验物理化学项目的资助，他正在利用光学吸收光谱法研究早期过渡金属含自由基和镁有机金属自由基。 自由基将产生在超声膨胀的激光烧蚀金属源和物种检测使用高分辨率LIF和拟议的瞬态频率调制光谱仪。 这些技术将用于获得这些物种的超精细结构和永久电偶极矩。 偶极矩将获得的TiCH和VCH已知的自由基。 将研究MgOH、MgCH 3、MgCCH、TiCH和CuOH，并搜索含有早期过渡金属的氢氧化物、酰亚胺和硫醇基。 这些数据是对电子相关理论的严格检验。这种对含过渡金属化合物的详细光谱研究将提供高分辨率光谱，从这些光谱中将获得化合物永久电偶极子的基本信息。 这将用于测试这些困难物种处于开发阶段的最新理论。 这些数据也广泛适用于有机金属、分析和高温化学以及恒星大气和星际介质。

Timothy Steimle of Arizona State University is supported by a grant from the Experimental Physical Chemistry Program with which he is using optical absorption spectroscopy to study early transition metal containing radicals and magnesium organometallic radicals. The radicals will be generated in the supersonic expansion of a laser ablated metal source and the species detected using high resolution LIF and a proposed transient frequency modulation spectrometer. These techniques will be used to obtain hyperfine structure of these species and permanent electric dipole moments. Dipole moments will be obtained for the TiCH and VCH known radicals. MgOH, MgCH3, MgCCH, TiCH and CuOH will be studied and searches will be made for hydroxide, imide and thiol radicals containing early transition metals. These data are a stringent test of theory involving electron correlation.This detailed spectroscopy study of transition metal containing compounds will provide high resolution spectra from which fundamental information on permanent electric dipoles of the compounds will be obtained. This will be used to test state of the art theories which are in the development phase for these difficult species. The data are also widely applicable to organometallic, analytical and high temperature chemistry and to stellar atmospheres and the interstellar medium.