Synthetic, Structural, and Mechanistic Studies of Monomeric Alkyl, Hydride, Sub-Valent, and Multiply Bonded Derivatives of the s-and p-Block Elements

s 和 p 块元素的单体烷基、氢化物、亚价和多重键衍生物的合成、结构和机理研究

• 批准号: 9610497
• 负责人: Gerard Parkin
• 金额: $ 40万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9610497&HistoricalAwards=false
• 关键词: Synthetic; Structural; Mechanistic; Studies; Monomeric

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports research on main group compounds by Dr. Gerard F. R. Parkin of the Chemistry Department, Columbia University. Synthetic, structural, mechanistic and thermodynamic studies will be undertaken to provide a comprehensive and fundamental understanding of main group (e.g., Al, Ga, Ge, In, Sn, Tl) complexes and their potential applications. Emphasis will be placed on metal-alkyl and metal-chalcogenide complexes and on the energetics of metal-main group multiple bonds. A series of new, structurally analogous compounds will be prepared using sterically-controlling ligands. The ligands to be used include poly(pyrazolyl)hydroborate, tris(imidazolyl)phosphine, and tetraaza(14)annulene. The steric environments created will be capable of supporting monomeric alkyl, hydride, chalcogenolate, subvalent, and multiply bonded chalcogenide and pnictide derivatives. Chalcogens S, Se, and Te are included in the study; pnictogens include P and Bi. Complexes of main group elements find application as precursors for ceramic materials, semiconductors, and superconductors. For example, binary II-VI chalcogenides (e.g., ZnSe and ZnTe) and III-V pnictides (eg., GaAs and InP) are used in photovoltaic energy conversion devices, light-emiting diodes, solid-state lasers and optical switches. Ceramics and porous solid state materials formed from chalcogenides and pnictides are also in use. In this study, new molecular compounds of controlled structure will be prepared and characterized in order to better be able to correlate the chemistry of these compounds with the properties of materials containing them.

该奖项在哥伦比亚大学化学系的Gerard F. R. Parkin博士对主要小组化合物的无机，生物无机和有机金属化学计划中。 将进行合成，结构，机械和热力学研究，以提供对主组（例如Al，Ga，Ge，Ge，in，SN，TL）复合物及其潜在应用的全面和基本的理解。 重点将放在金属 - 烷基和金属 - chalcogenide络合物以及金属 - 梅因组多键的能量上。 使用静置控制的配体制备一系列新的结构类似化合物。 要使用的配体包括聚（吡唑基）氢料，Tris（咪唑基）磷蛋白和Tetraaza（14）环。 创建的空间环境将能够支持单体烷基，氢化物，硫醇酸盐，亚含量和多键键合硫酸盐和pnictide衍生物。 研究中包括Chalcogens S，SE和TE； Pnictogens包括P和BI。 主要组元素的复合物找到作为陶瓷材料，半导体和超导体的前体的应用。 例如，在光伏能量转换设备，光线发射二极管，固态激光器和光学开关中，都使用了二进制II-VI Chalcogenide（例如ZnSe和Znte）和III-V Pnictides（例如GAAS和INP）。 也正在使用由硫酸盐和pnictides形成的陶瓷和多孔固态材料。 在这项研究中，将制备并表征受控结构的新分子化合物，以便能够更好地将这些化合物的化学性质与含有它们的材料的性质相关联。