Purchase of a Mass Spectrometer

小惠特迈尔9309467 化学研究仪器计划的这一奖项将 协助莱斯大学化学系购买 高分辨率质谱仪 新仪器将 大力加强若干领域的研究，包括： 1)C_（60）和更高级富勒烯的化学，2）催化形成C_（60）的合成和结构研究 C-C键，新的热或光化学环加成的使用和 含氮化合物新合成方法的发展; 3）含氮化合物中氮和碳中心自由基的形成 4）质谱在配合物全合成中的应用 天然产物，5）天然产物的生物合成，6）重主族元素化学。 这台仪器将取代两台旧的质谱仪，一台是在1999年购买的。 1969年买的，1975年买的。 质谱仪用于测量分子的精确质量 离子。 存在的各种离子的碎裂模式给出 关于母体分子的分子结构的信息， 分子离子进化的过程。 这些信息对于任何 现代化学合成程序。 ***

9309467 Whitmire This award from the Chemistry Research Instrumentation Program will assist the Department of Chemistry at Rice University in the purchase of high resolution Mass Spectrometer . This new instrumentation will enhance greatly research in a number of areas including the following: 1) The chemistry of C60 and the higher fullerenes, 2) Synthetic and structural investigations of the catalytic formation of C-C bonds, the use of new thermal or photochemical cycloadditions and the development of new syntheses of nitrogenous substances, 3) The formation of nitrogen- and carbon-centered radicals from azoalkanes, 4) The use of mass spectrometry in the total synthesis of complex natural products, 5) The biosynthesis of natural products, 6) Chemistry of the heavy main group elements. This instrument will replace two old mass spectrometers, one purchased in 1969 and one purchased in 1975. %%% The mass spectrometer is used to measure the precise mass of molecular ions. The fragmentation pattern of the various ions present gives information about the molecular structure of the parent molecules from which the molecular ions evolved. Such information is essential for any modern program of chemical synthesis. ***