Synthesis and Characterization of Metallated Zintl Ions

布莱恩·艾希霍恩博士，马里兰大学-学院园区化学系，由化学部无机化学、生物无机化学和金属有机化学项目支持，研究可溶14和15族锌离子过渡金属衍生物的合成和表征。这些化合物将由零价过渡金属络合物与锌离子反应而成。目标络合物将是第一批阴离子过渡金属锌离子簇合物。这些物种很少或根本没有伴随的配体或有机基团，并且将包含高度亲核的过渡金属中心。我们将研究这些络合物在小分子活化中的应用。一般来说，金属原子往往会失去电子而形成带正电荷的离子。然而，有一类带负电的物种被称为锌离子，它由几个(通常在7到12个之间)聚集在一起的金属原子组成。这个项目的目的是制备这种带负电荷的团簇，其中一个组分是过渡金属。由于过渡金属具有重要的催化性能，本研究中将要制备的新物种被设想具有比目前已知的锌物种更有效地激活小分子和执行化学转化的能力。

Dr. Bryan Eichhorn, Chemistry Department, University of Maryland - College Park, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division to investigate the synthesis and characterization of transition metal derivatives of soluble group 14 and 15 Zintl ions. The compounds will be prepared from the reactions between zero valent transition-metal complexes and Zintl anions. The targeted complexes will be among the first anionic transition-metal Zintl ion clusters. These species contain few or no attendant ligands or organic groups and will contain highly nucleophilic transition-metal centers. The use of these complexes in the activation of small molecules will be investigated. In general metal atoms tend to lose electrons to form positively charged ions. However, there is a class of negatively charged species called Zintl ions which are composed of several (usually between 7 and 12) metal atoms which are clustered together. This project aims at preparing such negatively charged clusters in which one of the components is a transition-metal. Since the transition-metals have important, e.g., catalytic properties, the new species to be prepared in this research are envisioned to possess the ability to activate small molecules and perform chemical transformations more efficiently than presently known Zintl species.