Main Group and Transition Metal Heterocyclynes

无机化学、生物无机化学和金属有机化学项目的这一奖项支持阿克伦大学化学系的Claire A.Tessier博士和Wiley J.Young博士对杂环化合物的研究。通过将Si、Ge、B、Al、Ga、In、P、As和Pt等杂原子引入到配合物的环状结构中，并将过渡金属与环上有效的C-C多键缔合，将得到新的配合物。将特别强调制备含有两个杂原子的环，合成同时包含Lewis酸和Lewis碱的双口袋杂环，以及使用更大的二炔来产生更大的口袋。一些铂链络合物的非线性光学、导电和液晶特性将被测定。还将尝试建造复杂的管状聚合物结构，这些结构可能具有有趣的电子特征。多核核磁共振是这项工作中的重要分析工具。杂环烯是环状聚炔，除了碳之外，还含有不同的元素，或杂原子。这里研究的体系包含三个由三个间隔基连接在一起的炔烃--其中一个是杂原子--形成一个平面的11元环。随着杂原子的变化，这个环的腔或腔的大小也不同。通过将杂环烃连接在一起，可以形成更精细的结构，这样它们最多可以包含四个口袋。这种化合物可以在可控的方式下制备，并形成具有导电和液晶性质的更大结构。

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports research on heterocyclyne complexes by Drs. Claire A. Tessier and Wiley J. Youngs of the Chemistry Department, University of Akron. New complexes will be prepared by incorporating heteroatoms such as Si, Ge, B, Al, Ga, In, P, As and Pt into the cyclic structure of the complexes, and by associating transition metals with available C-C multiple bonds in the ring. Special emphasis will be placed on preparing rings containing two heteroatoms, on synthesis of dipocket heterocyclynes that contain both a Lewis acid and a Lewis base, and on using larger diynes to create larger pockets. The non-linear optical, conducting, and liquid crystal characteristics of some platinum chain complexes will be determined. Attempts will also be made to build complex tube-like polymer structures that may have interesting electronic features. Multinuclear NMR is an important analytical tool in this work. Heterocyclynes are cyclic polyalkynes that, in addition to carbon, contain a different element, or heteroatom. The system investigated here contains three alkynes linked together with three spacers--one of which is the heteroatom--to form a planar 11-membered ring. The cavity of this ring, or pocket, varies in size as the heteroatom changes. More elaborate structures can be formed by linking heterocyclynes together, so that they contain up to four pockets. The compounds can be made in a controlled way and built up to larger structures that have conducting and liquid crystalline properties.