Ordered Arrays of Metals with Polynitrile or Cyanide Ligands

具有聚腈或氰化物配体的有序金属阵列

• 批准号: 9622589
• 负责人: Kim Dunbar
• 金额: $ 35.1万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-01 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9622589&HistoricalAwards=false
• 关键词: Ordered; Arrays; Metals; Polynitrile; Cyanide; Ordered; Arrays; Metals; Polynitrile; Cyanide

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program provides support for research on synthesis of organonitrile-bridged transition metal compounds by Dr. Kim R. Dunbar of the Chemistry Department, Michigan State University. Chain, layered and three-dimensional assemblies will be constructed and crystallized, and their magnetic and conducting properties determined. Acetonitrile compounds undergo facile substitution reactions so that a variety of ligands can be added to moderate properties. Solubility for extended arrays will be enhanced by varying charge on metal precursors, varying substituents on organic groups, and varying outer sphere ions present in extended networks. Compounds will be of two main types. One type of compound will contain transition metals sigma-bonded to the nitrogen atom lone pairs of polynitrile acceptors. Species such as tetracyanoethylene (TCNE) will be used. In these systems, paramagnetic metal centers are assembled into the organic radical network. The second type of compound consists of transition metal cyanide complexes reacted to form extended arrays of ferro- or ferrimangnetically coupled chains or two-dimensional networks. In this research, synthesis of transition metal nitrile compounds will be controlled so that pure crystals of one-, two-, or three-dimensional arrays will be formed. The arrays are expected to exhibit unusual magnetic properties which will be able to be correlated with structural arrangement. By manipulating the organic groups attached to the metals, the solubility of the compounds will be controlled in order to build specific types of molecular arrangements and crystal growth.

该奖项在密歇根州立大学化学系的Kim R. Dunbar博士的无机，生物有机和有机金属化学计划中为研究提供了支持的研究，密歇根州立大学的Kim R. Dunbar博士。 将构建和结晶的链，分层和三维组件，并确定其磁性和导电性能。 乙腈化合物会经历易于替代的反应，因此可以将各种配体添加到中等特性中。 通过在金属前体上的电荷，有机基团的不同取代基以及扩展网络中存在的不同外球体离子上的不同电荷，扩展阵列的溶解度将增强。 化合物将是两种主要类型。 一种类型的化合物将含有过渡金属的Sigma键入氮原子孤对多硝基受体。 将使用诸如四环乙烯（TCNE）之类的物种。 在这些系统中，顺磁金属中心被组装到有机自由基网络中。 第二种化合物由过渡金属氰化物配合物组成，该复合物反应形成了铁链或铁膜耦合链或二维网络的延伸阵列。 在这项研究中，将控制过渡金属硝酸化合物的合成，以形成一，二或三维阵列的纯晶体。 预计阵列将表现出异常的磁性特性，这些特性将能够与结构排列相关。 通过操纵附着在金属上的有机基团，将控制化合物的溶解度，以构建特定类型的分子排列和晶体生长。