Metallacarboranes: New Frontiers of Organometallics

金属碳硼烷：有机金属化合物的新领域

• 批准号: 9400672
• 负责人: Narayan Hosmane
• 金额: $ 16.2万
• 依托单位: Southern Methodist University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-15 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9400672&HistoricalAwards=false
• 关键词: Metallacarboranes; New; Frontiers; Organometallics

9400672 Hosmane Southern Methodist Univ. Dr. Narayan Hosmane, Chemistry Department, Southern Methodist University, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program for an investigation into the preparation and chemistry of complexes of small carborane ligands. Coordinately unsaturated lanthanacarboranes will be prepared and utilized as precursors to 14-electron metal alkyl derivatives. The reactivity patterns of "carbon separated" six-atom carboranes will be established with main group, early transition, and lanthanide metals and comparisons will be drawn with related "carbon apart" derivatives. Neutral, zwitterionic, and/or ionic, 14-electron carborane and mixed ligand complexes will be prepared and evaluated as Ziegler-Natta olefin polymerization catalysts. In order to utilize metal ions in many important applications, it is often necessary to contain them in molecular assemblages which permit them to interact with other species in a controlled fashion. A common way of achieving this goal is to utilize groups (ligands) which may be attached to a metal in order to create a specific desired environment about the metal. In this project compounds a relatively unstudied class of "ligands", the six atom carboranes, will be studied to learn their ability to stabilize electron poor metals so that they may form valuable catalysts.

9400672 Hosmane南卫理公会大学Narayan Hosmane博士，南卫理公会大学化学系，由无机，生物无机和有机化学计划支持，研究小碳硼烷配体络合物的制备和化学。将制备配位不饱和镧碳硼烷并将其用作14-电子金属烷基衍生物的前体。“碳分离”的六原子碳硼烷的反应模式将建立与主族，早期过渡，和镧系金属和比较将绘制与相关的“碳分离”的衍生物。将制备中性、两性离子和/或离子的14-电子碳硼烷和混合配体络合物并作为齐格勒-纳塔烯烃聚合催化剂进行评价。 为了在许多重要的应用中利用金属离子，通常需要将它们包含在允许它们以受控方式与其他物种相互作用的分子组合中。实现这一目标的常用方法是利用可以连接到金属上的基团（配体），以便在金属周围产生特定的所需环境。在这个项目中，将研究相对未研究的一类“配体”，即六原子碳硼烷化合物，以了解它们稳定贫电子金属的能力，从而形成有价值的催化剂。