Silicon Mediated Syntheses of Fluorophosphazenes and Other Fluorinated Compounds

爱达荷大学的Shreeve和Kirchmeier教授将在无机、生物无机和有机金属化学项目的支持下研究氟磷腈的合成。虽然合成磷腈化学多年来一直是一个研究领域，但对氟磷腈的研究相对较少。Shreeve和Kirchmeier将制备环磷腈和多磷腈，其中氟原子既连接到骨架原子上，也连接到取代基上，如氟烷氧化物、氟苯氧化物和氟烷基。许多合成将利用含氟有机硅烷作为试剂将氟基团引入到磷腈中。预计磷腈已经是一类很有前途的化合物，其氟化形式将显示出更好的性能。有一类无机化合物叫做磷腈，它类似于有机化合物，因为它们都是围绕着一组相互连接的原子构成的骨架构成的；然而，骨架不是由碳原子构成，而是由磷原子和氮原子交替构成。磷烯既可以制备成离散分子，也可以制备成聚合物，它们正在寻找某些商业应用。正如聚四氟乙烯是通过氟原子取代氢而与简单的有机化合物相联系一样，在本研究项目中，将制备一系列氟取代的磷腈。将探索这些化合物的基本化学性质，但预计它们将表现出相对于其未氟化的亲戚更好的性质。＊＊＊

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. ***