Carbene Reactivity in Pure and Mixed Molecular Crystals

提案：9320619摘要日期： 10/27/93 PI：Garcia-Garabay U.加州洛杉矶 苯烷基化合物化学的系统研究 有机分子晶体中的卡宾衍生物将是 进行了卡宾将在固态下生成， 热和光化学通过分子的挤压 来自苯基烷基重氮化合物的氮。这项研究将 包括纯结晶固体和混合分子 晶体，并将结合光化学技术， 固态化学和材料科学。产品研究 反应的速率将作为以下的函数来跟踪： 晶体和分子结构，这将被确定 通过X射线晶体学分析。相关性将是 寻求晶体和分子结构特征， 产品选择性和特异性。块状磁性 将测量性质，以确定是否发生有序的自旋-自旋相互作用，这将导致铁磁 行为 有机动力学计划的这笔赠款支持 米格尔·加西亚-加拉贝教授在哥伦比亚大学的工作 加州，洛杉矶。卡宾是二价的 物种而不是通常的四价碳分子， 将在固态下进行研究。各种卡宾将 产生的热量和光照射的 从前体分子中挤出分子氮。 这些前体分子的晶体结构将是 通过X射线晶体学分析确定， 这些反应的产物和速率将相互关联， 晶体和分子结构。这些研究将 提供卡宾化学和固态的见解 化学.

Proposal: 9320619 ABSTRACT Date: 10/27/93 PI: Garcia-Garabay U. Cal. Los Angeles A systematic investigation of the chemistry of phenyl-alkyl carbene derivatives in organic molecular crystals will be made. Carbenes will be generated in the solid state both thermally and photochemically by the extrusion of molecular nitrogen from phenyl alkyl diazo compounds. The study will include pure crystalline solids and mixed molecular crystals, and will combine techniques from photochemistry, solid state chemistry, and material science. Product studies and rates of reactions will be followed as a function of crystal and molecular structures, which will be determined by X-ray crystallographic analyses. Correlations will be sought for crystal and molecular structural features with product selectivity and specificity. Bulk magnetic properties will be measured to determine if ordered spin- spin interactions occur, which would lead to ferromagnetic behavior. This grant from the Organic Dynamics Program supports the work of Professor Miguel Garcia-Garabay at the University of California, Los Angeles. Carbenes, which are divalent species rather than the usual tetravalent carbon molecules, will be studied in the solid state. Various carbenes will be produced both thermally and by light irradiation by the extrusion of molecular nitrogen from precursor molecules. Crystal structures of these precursor molecules will be determined by X-ray crystallographic analysis and the products and rates of these reactions will be correlated with the crystal and molecular structure. These studies will provide insight to carbene chemistry and solid state chemistry.