Gallepins: A Metalloaromatic Excursion

Gregory H.博士罗宾逊，化学系，格鲁吉亚大学，是由无机，生物无机和有机化学计划的化学部的合成和研究的gallenpin的支持。Gallenpins是与tropyridine离子相关的七元环状化合物，通过用镓取代一个环碳。 这些物质将含有6个π电子并且是中性芳香族化合物。闭环反应将用于制备各种gallepin分子，包括简单gallepin、苯并gallepin、二苯并gallepin、非芳族稠合gallepin和稠合环gallepin。 将检查这些分子的反应化学，以确定是否有可能稳定两个gallepin之间的Ga-Ga键，如果gallepin环的金属芳香族特征影响这种Ga-Ga键，如果有gallepin环的金属芳香族特征和化学ofgallium-transition metal bonds之间的相关性，以及是否有可能合成双（gallepin）-过渡金属夹心化合物。芳香性是解释含有离域π电子的环状有机化合物化学的最重要概念之一。该项目旨在制备含有主族金属镓的芳香族化合物，并将芳香性的概念扩展到碳的范围之外，使金属发挥更突出的作用。本科生、研究生和博士后将参与该项目。他们将发展各种合成和物理方法的技能。这些学生将包括代表性不足群体的成员。

Dr. Gregory H. Robinson, Chemistry Department, University of Georgia, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for the synthesis and study of gallenpins. Gallenpins are seven member cyclic compounds related to tropylium ions by the replacement of one ring carbon by a gallium. These species will contain 6 pi-electrons and be neutral aromatic compounds. Ring closure reactions will be used to prepare a variety of gallepin molecules, including simple gallepins, benzogallepins, dibenzogallepins, non-aromatic annelated gallepins, and fuzed ring gallepins. The reaction chemistry of these molecules will be examined in order to determine if it is possible to stabilize a Ga-Ga bond between two gallepins, if the metalloaromatic character of gallepin rings affects such Ga-Ga bonds, if there is a correlation between metalloaromatic character of the gallepin ring and the chemistry ofgallium-transition metal bonds, and if it is possible to synthesize bis(gallepin)-transition metal sandwich compounds. Aromaticity is one of the most important concepts in explaining the chemistry of cyclic organic compounds that contain delocalized pi electrons. This project aims at preparing aromatic compounds that contain the main group metal, gallium, and to extend the concept of aromaticity beyond the confines of carbon to a region where metals play a more prominent role. Undergraduate, graduate, and postdoctoral students will be engaged in this project. They will develop skills in a wide range of synthetic and physical methods. These students will include members of underrepresented groups.