MRI: Acquisition of an upgraded radio frequency console, a broadband nitrogen-cooled probe and an autosampler for a 400 MHz nuclear magnetic resonance (NMR) spectrometer

在主要研究仪器计划（MRI）的这一奖项和化学研究仪器计划（CRIF）的支持下，来自萨斯奎汉纳大学的William Dougherty教授及其同事Geneive亨利和Elizabeth Valentin通过配备新的射频控制台升级了400 MHz核磁共振（NMR）光谱仪，能够在-100和+150摄氏度之间工作的宽带探头和24位自动进样器。光谱仪的升级电子设备允许在各种领域进行研究，例如那些加速具有重要经济意义的化学反应的领域，以及那些允许研究生物相关物种的领域。一般来说，NMR光谱是化学家用来阐明分子结构的最有力的工具之一。它用于识别未知物质，表征分子内原子的特定排列，并研究溶液或固态分子之间相互作用的动力学。 这些NMR研究的结果对合成有机/无机化学、材料化学和生物化学产生了影响。所获得的探头既可用作宽带探头，又可用作高场探头，从而提高灵敏度。该仪器是本科生通过独立的学生研究和传统的学术课程进行教学和研究的一个组成部分。该奖项旨在加强各级研究和教育，特别是在以下领域：（a）理解化学结构对过渡金属络合物氧化还原性质的影响;（B）研究带有空间体积大的三吡唑硼酸盐配体的第一行过渡金属络合物的氧化还原性质，和（c）从生长在宾夕法尼亚州的苔草属（草本植物或莎草）和金丝桃属物种（草本灌木）中分离和光谱表征天然产物。

With this award from the Major Research Instrumentation Program (MRI) and support from the Chemistry Research Instrumentation Program (CRIF), Professor William Dougherty from Susquehanna University and colleagues Geneive Henry and Elizabeth Valentin have upgraded a 400 MHz Nuclear Magnetic Resonance (NMR) spectrometer by equipping it with a new radio frequency console, a broadband probe capable of operating between -100 and +150 degrees Centigrade and a 24-position autosampler. The upgraded electronics for the spectrometer allows research in a variety of fields such as those that accelerate chemical reactions of significant economic importance, as well as those that allow study of biologically relevant species. In general, NMR spectroscopy is one of the most powerful tools available to chemists for the elucidation of the structure of molecules. It is used to identify unknown substances, to characterize specific arrangements of atoms within molecules, and to study the dynamics of interactions between molecules in solution or in the solid state. The results from these NMR studies have an impact in synthetic organic/inorganic chemistry, materials chemistry and biochemistry. The acquired probe acts both as a broadband and high-field probe which increases sensitivity. This instrument is an integral part of teaching as well as research performed by undergraduate students via independent student research and traditional academic coursework.The award is aimed at enhancing research and education at all levels, especially in areas such as (a) understanding the influence chemical structure has on the redox properties of transition metal complexes; (b) studying the redox properties of first row transition metal complexes bearing sterically bulky trispyrazolylborate ligands and (c) isolating and spectroscopically characterizing natural products from Carex (grassy plants or sedge) and Hypericum species (herbaceous shrubs) growing in Pennsylvania.