Novel Application of Hydrogen Bonding in Inorganic Chemistry

Robert H.博士耶鲁大学化学系的克拉布特里是 由无机，生物无机和有机物计划支持， 化学部研究新型氢键 其发生在常规质子供体、OH或NH基团和 非常规受体，M-H或B-H键（M = Re，Ir）。初步 数据表明，这些键短，强，并在MH或BH弯曲 单位在这个项目中， M-H... M和M将合成M'配合物， 结合在他们分析使用光谱和动力学数据。具体 将要解决的问题包括稳定HF 络合物，通过诱导限制二氢络合物中的旋转 氢键的形成，扰乱聚乙烯的流动速率，以及 提高CO的亲核攻击速率。溶剂化显色法 将被评估为表征外层氢键相互作用。 原子和分子之间的相互作用是最重要的现象 决定了物质的性质一种类型的交互是 叫做“氢键”。“多年来人们都知道氢键 例如，冰的许多特性都是由它决定的， 液态水最近，新型氢键， 发现了金属氢单元。该项目旨在 发现这些新型氢键的一般趋势， 开发新的氢键情况，以实现有用的 化学转化

Dr. Robert H. Crabtree, Department of Chemistry, Yale University, is supported by the Inorganic, Bioinorganic, and Organometallic Program of the Chemistry Division for a study of novel types of hydrogen bonding that occur between a conventional proton donor, an OH or NH group, and an unconventional acceptor, an M-H or B-H bond (M = Re, Ir). Preliminary data show that these bonds are short, strong, and bent at the MH or BH unit. During this project examples of inter- and intramolecular M-H...H-M' and M-H...M' complexes will be synthesized and the hydrogen bonding in them analyzed using spectroscopic and kinetic data. Specific issues that will be addressed target include the stabilization of HF complexes, restricting rotation in dihydrogen complexes by inducing H-bond formation, perturbing the fluxionality rates of polyhydrides, and increasing the rate of nucleophilic attack at CO. A solvatochromic method will be evaluated for characterizing outer sphere H-bonding interactions. Interactions between atoms and molecules are the most important phenomena that determine the properties of matter. One type of interaction is called 'hydrogen bonding.' Hydrogen bonding has been known for many years and is responsible, for example, for many of the properties of ice and liquid water. Recently, new types of hydrogen bonds that involve metal-hydrogen units have been discovered. This project aims at discovering general trends in these new types of hydrogen bonds and at developing novel hydrogen bonding situations in order to effect useful chemical transformations.