Purchase of a Mass Spectrometer

这份来自化学研究仪器项目的资助将帮助莱斯大学化学系购买高分辨率质谱仪。这种新仪器将极大地加强在许多领域的研究，包括：1) C60和高级富勒烯的化学性质；2)催化形成C-C键的合成和结构研究，利用新的热或光化学环加成物和开发新的含氮物质的合成方法；3)偶氮烷烃形成氮中心和碳中心自由基；4)质谱法在复杂天然产物全合成中的应用；重主族元素的化学。这台仪器将取代两台旧的质谱仪，一台是1969年购买的，另一台是1975年购买的。质谱仪用于精确测量分子离子的质量。存在的各种离子的碎片模式提供了有关分子离子从母体分子进化而来的分子结构的信息。这些信息对于任何现代化学合成程序都是必不可少的。＊＊＊

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. ***