ORDERED ARRAYS OF METALS W/ POLYNITRILE OR CYANIDE LIGANDS

桥联过渡金属的分子基组装体 提出了有机腈或氰化物配体。主要目标是 磁性和导电性的合成、结晶和测量 链状、层状和三维化合物的性质。对这些来说至关重要 研究的是乙腈金属络合物的使用和配合 易取代或易加成的不饱和金属络合物 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 已知化合物以及新的金属和有机分子的数量 它们被设计成定制结构的维度和 来调停财产。分子前驱体将被表征 通过核磁共振或电子顺磁共振波谱、质谱学和x射线分析 结晶学。新的顺磁性氰化物和乙腈配合物 的3D金属将被设计用于反应形成 铁或亚铁磁性耦合链的大分子阵列或 2-D网络。顺式或顺式两种氰化物配体的结构 平移方向被用来影响 从它们准备的扩展阵列。除了架构之外 基于八面体和四面体构建块，基于框架 自制新型立方八氰双金属酸盐砌块的研究 还提出了实验室的建议。这项工作中需要解决的问题 可溶性问题，空间排列会减少吗？-堆积 或有机自由基，以及可溶低聚物的结晶 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，它 对于从MALDI和/或 电喷雾质谱仪。

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.