Alkali Metal Adducts to Organic Complexants: From Alkalides and Electrides to Organic Anions

9610335染料本项目专注于晶盐的合成和表征，晶盐含有锂、钠和钾等碱金属与各种有机络合剂反应的产物，形成两种新型化合物：碱金属，在冠醚和隐酸盐中含有碱金属阴离子；以及带电离子，其中络合阳离子的正电荷由空穴离域电子而不是阴离子来平衡。这里特别感兴趣的是其中的电子与空穴中捕获的电子或芳香族自由基阴离子具有几乎相同的化学势的化合物。电子密度分布在两个位置之间的固体化合物应该具有有趣的电、磁和光学性质，以及室温稳定性的可能性。这些研究可能导致电子和碱化物作为固态电子器件的使用，以及作为合成和催化的新型试剂。它们还将提供一个在新的材料类别中研究当前光物理问题的机会，包括里德堡类型的基态、电子间的磁相互作用和自旋波、1、2和3维的电子传导性，以及非金属到金属的跃迁。***

9610335 Dye This project is focused on the synthesis and characterization of crystalline salts that contain the products of reaction between alkali metals such as lithium, sodium and potassium and various organic complexants to form two novel types of compounds: alkalides, containing alkali metal anions in crown ether and cryptand salts, and electrides, in which the positive charge of complex cations is balanced by cavity- delocalized electrons rather than by anions. Of particular interest here are compounds in which electrons have nearly the same chemical potential as trapped electrons in cavities or as aromatic radical anions. Solid compounds in which the electron density is distributed between the two sites should have interesting electronic, magnetic and optical properties, together with the possibility of room temperature stability. %%% These investigations may lead to the use of electrides and alkalides as solid-state electronic devices, and as novel reagents for synthesis and catalysis. They will also provide an opportunity to study in a new class of materials current problems in photophysics including Rydberg-type ground states, inter-electron magnetic interactions and spinwaves, electronic conductivity in 1,2 and 3 dimensions, and non- metal to metal transitions. ***