Multiple Bonds Between Metal Atoms. Studies of Synthesis, Substitutional Behavior, Reactivity, Electronic Structure and Macromolecular Chemistry

这个无机、生物无机和有机金属化学项目的奖项支持印第安纳大学化学系Malcolm H. Chisholm博士对含有金属-金属多键的化合物的研究。将开展五个方面的研究：(1)新的双核化合物的合成及其在同核和异金属簇化合物合成中的细化；(2)阐明这些化合物取代反应的详细机理，以确定总的趋势；(3)探索C-X多键和M-M多键之间多重氧化还原反应的机理和应用；(4)双核配合物共价连接二聚体的合成及其与小低聚物的物理化学性质的研究，作为高低聚物和聚合物的模型；(5)制备和研究有序组合（如一维聚合物、液晶相和单晶）中M-M多键的电子转移和非线性光学响应的各向异性特性。作为簇和链的金属阵列具有有用的电子、磁性和光学性质，在催化中也很重要。这项基础研究将以系统的方式探索新阵列的合成及其性质。学生将有机会学习广泛的合成和物理方法，并将他们的学习扩展到材料研究。

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports research on compounds containing metal-metal multiple bonds by Dr. Malcolm H. Chisholm of the Chemistry Department, Indiana University. Five areas of investigation will be carried out: (1) synthesis of new dinuclear compounds and their elaboration in synthesis of homonuclear and heterometallic cluster compounds; (2) elucidation of the detailed mechanisms of substitution reactions of these compounds in order to establish general trends; (3) exploration of mechanisms and utility of multiredox reactions between C-X multiple bonds and M-M multiple bonds; (4) synthesis of covalently linked dimers of dinuclear complexes and the study of their physicochemical properties together with small oligomers as models for higher oligomers and polymers; and (5) the preparation and investigation of the properties of M-M multiple bonds in ordered assemblies (such as 1-D polymers, liquid crystalline phases and single crystals) with respect to their anisotropic properties of electron transfer and non-linear optical responses.Metal arrays as clusters and chains have useful electronic, magnetic, and optical properties and are also important in catalysis. This fundamental investigation will explore the synthesis of new arrays and their properties in a systematic way. Students will have opportunities to learn a broad range of synthetic and physical methods and to extend their studies into materials research.