New frontiers in coordination chemistry magnetic properties, reactivity and advanced materials

配位化学磁性能、反应性和先进材料的新领域

• 批准号: 227141-2006
• 负责人: Leznoff, Daniel
• 金额: $ 4.37万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=393409
• 关键词: New; frontiers; coordination; chemistry; magnetic

This coordination chemistry research program targets the synthesis, properties and applications of metal-organic ligand systems, focusing on the areas of paramagnetic metal complexes and supramolecular cyanometallate coordination polymers.  At the heart of these studies is the need to understand how to control structure and properties of metal complexes and polymers via the design of appropriate ligands and choice of metals.  For example, understanding the factors controlling metal spin- and oxidation-states and how they influence the reactivity of metalloproteins or paramagnetic catalysts are prerequisites to elucidating how the systems function.  The design of new magnetic materials requires a comprehension of fundamental magnetic interactions, as well as an ability to control 3-D molecular arrangements.  Indeed, the control of supramolecular structures is also essential to designing conducting, porous or non-linear optical materials so questions of how to increase structural dimensionality and how to selectively generate coordination polymers with a particular shape or topology are critically important. To address these key issues, this research program is designed: (1) to determine how to control structural dimensionality and 3-D geometry (e.g. via attractive metal-metal interactions) and use this knowledge to design useful vapochromic, porous, birefringent and magnetic coordination polymer materials; (2) to investigate structural and electronic factors that determine the nature of magnetic coupling; (3) to stabilize unusually high-oxidation states or rare spin-states of metals; and (4) to probe the impact of unpaired electrons on reactivity in paramagnetic complexes using transition metals and actinides. An increased fundamental understanding of structure-property relationships, magnetic interactions and spin- and oxidation-state control is anticipated.  This interdisciplinary research program also provides a great deal of HQP training, including a distinctive joint chemistry/physics training opportunity using muon-spin resonance at TRIUMF.

本专业主要研究金属-有机配体体系的合成、性质和应用，重点关注顺磁性金属配合物和超分子金属氰化物配位聚合物。这些研究的核心是了解如何通过设计合适的配体和选择金属来控制金属配合物和聚合物的结构和性质。例如，理解控制金属自旋和氧化态的因素以及它们如何影响金属蛋白或顺磁催化剂的反应性是阐明系统如何工作的先决条件。新磁性材料的设计需要理解基本的磁相互作用，以及控制三维分子排列的能力。事实上，超分子结构的控制对于设计导电、多孔或非线性光学材料也是必不可少的，因此如何增加结构维度和如何选择性地产生具有特定形状或拓扑结构的配位聚合物的问题是至关重要的。为了解决这些关键问题，本研究计划设计：（1）确定如何控制结构尺寸和三维几何形状（2）研究决定磁耦合性质的结构和电子因素;（3）稳定金属的异常高氧化态或稀有自旋态;（4）探测未成对电子对使用过渡金属和锕系元素的顺磁络合物中的反应性的影响。预计将增加对结构-性质关系，磁相互作用以及自旋和氧化态控制的基本理解。这个跨学科的研究计划还提供了大量的HQP培训，包括在TRIUMF使用μ子-自旋共振的独特的联合化学/物理培训机会。