Studies on the Establishment of the Central Dogma for Heteroatom Chemistry

本研究旨在阐明有机杂原子化合物（元素周期表中属于14 - 17族的元素）的化学键的常用概念，并通过阐明杂原子化学中化学键的性质，建立被称为新“中心法则”的普遍接受的概念。得到的主要结果如下：1)Si衍生物键合的理论mo -计算揭示了它们的特征性质。对于第15族和第16族元素，那些属于高周期衍生物的元素更加稳定，并且通过理论和实验研究的发展，分子设计，合成和结构确定成为可能。对15族和16族化合物的赝旋和配体偶联反应进行了详细的实验研究。2) Si和P化合物中的多键是由附着在中心元素上的大体积和富电子取代基稳定的。此外，还合成了诸如二维和三维高应变分子的多晶硅化合物。3)利用15-17基团的高配位化合物进行有机合成和生成活性物质的尝试，成功地开拓了杂原子化合物的研究领域

The purpose of this research intended to manifest the concepts to be commonly applied for the chemical-bondings of the organo-heteroatom compounds (the elements belonging to the groups 14 to 17 in the periodic table) and also establish the commonly acceptable concepts called the new "central dogma" by elucidating the nature of the chemical bondings in the heteroatom chemistry. Major results obtained are in the following, 1) Theoretical MO-calculations of the bondings involving the Si derivatives revealed their characteristic properties. In the case of groups 15 and 16 elements, those belonging to the higher periodic derivatives are stabilized more and by the development of the theoretical and experimetal studies, molecular designs, synthesis, and structural determination have become possible. The detailed experiments on the pseudo-rotation and ligand-coupling reactions of the compounds of groups 15 and 16 elements have been undergone. 2) The multiple-bonds in the Si and P compounds are stabilized both by the bulky and electron-rich substituents attached to the central elements. Furthermore, polysilicon compounds such as two- and three dimensional and highly strained molecules have been synthesized. 3) Organic synthesis and generation of active species using the high-coordinate compounds belonging to groups 15-17 have been tried and these investigations successfully developed the field of heteroatom compounds