ORDERED ARRAYS OF METALS W/ POLYNITRILE OR CYANIDE LIGANDS

桥连过渡金属的分子组装 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 链状、层状和三维化合物的性质。 中心这些 研究的是利用乙腈金属配合物与 不饱和金属络合物，其经历容易的取代或加合 与含有异氰酸酯或氰酸酯的配体的反应 功能。 这些研究的分子前体包括 许多已知的化合物以及新的金属和有机分子 设计用来调整结构的维度， 来调节属性。 分子前体将被表征 通过NMR或EPR光谱、质谱和X射线 结晶学 新的顺磁性氰化物和乙腈配合物 3D金属将被设计用于反应， 铁磁或亚铁磁耦合链的大分子阵列， 二维网络 具有两个顺式或三式氰化物配体的结构 反式取向用于影响 扩展阵列由它们准备。 除了架构之外 基于八面体和四面体的结构单元， 在我们的研究中制备的新型立方八氰化物二金属酸盐结构单元上， 实验室也被提议。 这项工作中需要解决的问题 是溶解度问题，空间排列的减少？堆叠 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。 代替低聚物的X射线数据， 从MALDI获得结构信息和/或 电喷雾质谱

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.