Organometallic Chemistry of Main Group 14 Elements Si, Ge, and Sn

这项有机和大分子化学计划的拨款支持Satoru Masamune教授的研究，该研究旨在合成含有硅（Si），锗（Ge）或锡（Sn）原子的分子的新键类型，以取代通常的碳原子。这些新结构无疑将导致新的化学和物理性质，并可能产生重要的新材料。本研究将涉及硅、锗和锡化学的两个具体方面：1)小环的合成和化学，包括环丙烷、双环丁烷和三环丁烷（四面体）体系，这些体系全部或部分由硅、锗或锡组成，例如四硅四面体烷和（单）硅四面体烷；2)二烯、二硅烯、德意志硫酮和硅烯类型的多键的构建和表征。这两个系列的体系在化学上是相互关联的，其中一个系列中的化合物可以转化为另一个系列中的化合物。环三金属烯、二金属烯和四硅环？1.1.0！丁烷衍生物已经开始合成，初步的基础工作已经完成。进一步的工作将使目前已知的系统系统化。重点将放在四硅四面己烷和二苯乙烯衍生物以及母体二苯乙烯和二苯乙烯的合成上。

This grant in the Organic and Macromolecular Chemistry Program supports research of Professor Satoru Masamune, which is directed at the synthesis of new bonding types for molecules that contain silicon(Si), germanium(Ge) or tin(Sn) atoms as replacements for the usual carbon atom. These new structures will undoubtedly lead to new chemistry and physical properties and possibly to important new materials. This research will be concerned with two specific aspects of Si, Ge, and Sn chemistry: 1) the synthesis and chemistry of small rings including the cyclopropane, bicyclobutane, and tricyclobutane (tetrahedrane) systems which consist, fully or partially, of Si, Ge, or Sn, e.g., tetrasilatetrahedrane and (mono)silatetrahedrane; and 2) the construction and characterization of multiple bonds of the digermene, disilyne, germathione, and silyne types. These two series of systems are chemically interrelated and the compounds in one series are converted into those in the other series. Cyclotrimetallanes and dimetallenes and tetrasilabicyclo?1.1.0!butane derivatives have already yielded to synthesis and the initial ground work has been completed. Additional work will systematize the now known systems. Major emphasis will be on the synthesis of tetrasilatetrahedrane and disilyne derivatives, and parent disilene and digermene.