ORDERED ARRAYS OF METALS W/ POLYNITRILE OR CYANIDE LIGANDS

具有聚腈或氰化物配体的有序金属阵列

• 批准号: 6258804
• 负责人: KIM R DUNBAR
• 金额: $ 0.01万
• 依托单位: MICHIGAN STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-01 至 1999-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6258804
• 关键词: biological products; biomedical resource; genetics; nucleic acids; proteins

Molecule-based assemblies of transition metals bridged by organonitrile or cyanide ligands are proposed. Key objectives are to synthesize, crystallize and measure the magnetic and conducting properties of chain, layered, and 3-D compounds. Central to these studies is the use of acetonitrile metal complexes and coordinatively unsaturated metal complexes that undergo facile substitution or adduct reactions with ligands containing isocyanate or cyanate functionalities. Molecular precursors for these studies include a number of known compounds as well as new metal and organic molecules that are designed to tailor the dimensionality of the structures and to mediate properties. The molecular precursors will be characterized by NMR or EPR spectroscopy, mass spectrometry and x-ray crystallography. New paramagnetic cyanide and acetonitrile complexes of 3d metals will be designed for use in reactions to form macromolecular arrays of ferro- or ferrimagnetically coupled chains or 2-D networks. Structures with two cyanide ligands in either cis or trans orientations are used to influence the dimensionality of extended arrays prepared from them. In addition to architectures based on octahedral and tetrahedral building blocks, frameworks based on novel cubic octacyanide dimetallate building blocks prepared in our laboratories are also proposed. Issues to be addressed in this work are solubility problems, steric arrangements that diminish ?-stacking or organic radicals, and the crystallization of soluble oligomers whose properties and structures aid in the characterization of corresponding polymers. In lieu of x-ray data for the oligomers, it will be important to obtain structural information from MALDI and/or electrospray mass spectrometry.

基于分子的过渡金属组装体 提出了有机腈或氰化物配体。 主要目标是 合成、结晶和测量磁性和导电性 链状、层状和 3-D 化合物的性质。 这些的核心 研究是使用乙腈金属配合物并协调 容易发生取代或加合物的不饱和金属配合物 与含有异氰酸酯或氰酸酯的配体发生反应 功能。 这些研究的分子前体包括 许多已知化合物以及新的金属和有机分子 旨在定制结构的尺寸和 来调解财产。 分子前体将被表征 通过 NMR 或 EPR 光谱、质谱和 X 射线 晶体学。 新型顺磁性氰化物和乙腈配合物 3D金属将被设计用于反应形成 铁磁或亚铁磁耦合链的大分子阵列或 二维网络。 具有两个顺式或顺式氰化物配体的结构 反式方向用于影响维度 由它们准备的扩展数组。 除了架构之外 基于八面体和四面体构建块，基于框架 我们制备的新型立方八氰化物二金属盐结构单元 还建议建立实验室。 本工作需要解决的问题 溶解度问题、空间排列会减少？堆积 或有机自由基，以及可溶性低聚物的结晶 其性质和结构有助于表征 相应的聚合物。 它代替了低聚物的 X 射线数据 从 MALDI 获取结构信息和/或 电喷雾质谱法。