Silicon Mediated Syntheses of Fluorophosphazenes and Other Fluorinated Compounds

爱达荷州大学的Shreeve和Kirchmeier教授将在无机、生物无机和有机化学项目的支持下研究氟代磷腈的合成。 虽然合成磷腈化学多年来一直是一个富有成果的研究领域，但氟代磷腈一直相对未受影响。 Shreeve和Kirchmeier将制备环磷腈和聚磷腈，其中氟原子既连接到骨架原子上，也连接到取代基上，如氟烷氧基、氟苯酚和氟烷基。 许多合成将利用氟有机硅烷作为试剂将氟基团引入磷腈中。 预期磷腈类化合物已经是一类有前途的化合物，其氟化形式将显示出改进的性质。 有一类被称为磷腈的无机化合物，它们与有机化合物相似，因为它们是围绕着连接原子的骨架构建的;然而，骨架不是碳原子，而是由交替的磷和氮原子组成。 磷腈既可以作为离散分子制备，也可以作为聚合物制备，并且它们正在发现某些商业应用。 正如Teflon是通过用氟原子取代氢而与简单的有机化合物相关联，在本研究项目中，将制备一系列氟取代的磷腈。 这些化合物的基本化学将被探索，但预计它们将显示出相对于其未氟化的亲戚改进的性能。 ***

9310389 Shreeve Professors Shreeve and Kirchmeier of the University of Idaho will investigate the synthesis of fluorophosphazenes with support from the Inorganic, Bioinorganic, and Organometallic Chemistry Program. Although synthetic phosphazene chemistry has been a fertile area of research for many years, the fluorophosphazenes have been relatively untouched. Shreeve and Kirchmeier will prepare cyclophosphazenes as well as polyphosphazenes with fluorine atoms attached both to the skeletal atoms as well as to substituent groups such as fluoroalkoxides, fluorophenoxides, and fluoroalkyls. Many of the syntheses will take advantage of fluoro-organosilanes as reagents to introduce the fluoro-groups into the phosphazenes. It is anticipated that the phosphazenes, already a promising class of compounds, will display improved properties in their fluorinated forms. %%% There is a class of inorganic compounds, called the phosphazenes, which are similar to organic compounds in the sense that they are constructed around a skeleton of linked atoms; however, instead of carbon atoms the skeleton is made of alternating phosphorus and nitrogen atoms. Phosphazenes can be prepared both as discrete molecules and as polymers, and they are finding certain commercial applications. Just as Teflon is related to simple organic compounds through the replacement of hydrogen with fluorine atoms, in the present research project a series of fluorine-substituted phosphazenes will be prepared. The basic chemistry of these compounds will be explored, but it is anticipated that they will display improved properties relative to their unfluorinated relatives. ***