Upgrade of Departmental Electron Paramagnetic Resonance Facility

这份来自化学研究仪器和设施项目（CRIF）和多学科活动办公室（OMA）的合同将帮助北卡罗来纳大学教堂山分校的化学系获得一台配备CCD探测器的单晶x射线衍射仪。这些设备将加强若干领域的研究，包括：(1)烯烃聚合反应中催化中间体的结构；(2)自由基加成反应中立体化学的控制；(3)簇链和混合价簇配合物的结构研究；(4)配位体的对映选择反应；(5)金属发色团中α、β和γ极性之间相互关系的基础研究；(6)13-15 （II-V）单体、链、环和簇的结构研究。x射线衍射仪用于对分子的完整三维结构进行精确的测量。所获得的信息给出了给定分子的所有键距和键角的精确值，并给出了分子相对于邻近分子的空间排列的准确信息。＊＊＊

*** 9709977 SAMULSKI This award from the Chemistry Research Instrumentation and Facilities Program (CRIF) and the Office of Multidisciplinary Activities (OMA) will help the Department of Chemistry at University of North Carolina at Chapel Hill acquire a single crystal x-ray diffractometer equipped with a CCD detector. The equipment will enhance research in a number of areas including the following: (1) structures of catalytic intermediates in olefin polymerization reactions, (2) control of stereochemistry in radical addition reactions, (3) structural studies of cluster chains and mixed-valance cluster complexes, (4) enantioselective reactions of coordinated ligands, (5) a fundamental study of the interrelationships between alpha, beta, and gamma polarizabilities in metal chromophores, and (6) structural studies of 13-15 (II-V) monomers, chains, cycles and clusters. The X-ray diffractometer is used to make accurate and precise measurements of the full three dimensional structure of a molecule. The information obtained gives the precise values of all the bond distances and bond angles of a given molecule and it gives accurate information about the spatial arrangement of the molecule relative to neighboring molecules. ***