Fundamental Aspects of the Dinuclear Chemistry of Molybdenumand Tungsten
Fundamental Aspects of the Dinuclear Chemistry of Molybdenumand Tungsten
批准号:
9101664
负责人:
Malcolm Chisholm
金额:
$44.98万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-05-15 至 1994-10-31
中文摘要
本文将通过合成和结构方法探讨形式电荷为4 ~ 10的钼、钨的双核阳离子过渡金属配合物的配位化学。将开展配体取代反应的动力学和机理研究以及双核金属中心的有机金属化学。由于金属-金属键的影响,这些结果可能与彻底研究的单核配合物有很大不同。使用双核金属多键作为构建块而形成的液晶和聚合物等有序组件将被研究,重点是这些大分子系统的可控磁、光学和电子特性。双核前体的第一电离势根据金属和取代基的不同而变化2伏;这些特性将允许大量具有可调电子特性的大分子系统。在化学学部无机、生物无机和有机金属项目的这个项目中,印第安纳大学的Malcolm H. Chisholm博士将继续他对钼和钨双核配合物的丰富化学性质的研究。这些分子作为均相催化剂显示出相当大的前景。此外,它们可以在适当的条件下组装形成液晶和聚合物,这些聚合物可能作为新材料具有有用的性能。
英文摘要
The coordination chemistry of dinuclear cationic transition metal complexes of molybdenum and tungsten with formal charges of four to ten will be explored through synthesis and structural methods. Kinetic and mechanistic studies of ligand substitution reactions and the organometallic chemistry of dinuclear metal centers will be initiated. These results may differ substantially from the thoroughly investigated mononuclear complexes due to the influence of the metal-metal bond. Ordered assemblies such as liquid crystals and polymers formed by use of dinuclear metal multiple bonds as building blocks will be investigated, with emphasis on the controllable magnetic, optical, and electronic properties of these macromolecular systems. The dinuclear precursors have first ionization potentials that vary by two volts depending on metal and the substituents; these features should allow a large array of macromolecular systems with tunable electronic properties. %%% In this project in the Inorganic, Bioinorganic, and Organometallic Program of the Chemistry Division, Dr. Malcolm H. Chisholm of Indiana University will continue his studies of the rich chemistry of dinuclear complexes of molybdenum and tungsten. These molecules show considerable promise as homogeneous catalysts. In addition, they can be assembled under proper conditions to form liquid crystals and polymers that may have useful properties as new materials.
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Charge Delocalization and Mobility in Ground and Photoexcited States of Conjugated Pi-Systems Incorporating MM Quadruple Bonds (MM=Mo2, MoW and W2)
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批准号:1266298
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项目类别:Standard Grant
-
资助金额:$24.0万
-
财政年份:2013
-
负责人:Malcolm Chisholm
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依托单位:
Incorporating MM Quadruple Bonds (M = Mo, W) into Organic Conjugated Pi-Systems. Fundamental Studies and Applications
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批准号:0957191
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项目类别:Continuing Grant
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资助金额:$45.0万
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财政年份:2010
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负责人:Malcolm Chisholm
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依托单位:
CRIF:MU: Acquisition of Laser Instrumentation for Ultrafast Raman Measurements
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批准号:0840455
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项目类别:Standard Grant
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资助金额:$47.26万
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财政年份:2009
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负责人:Malcolm Chisholm
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依托单位:
Towards Molecular Infomatics Based on Electronically-Coupled MM Units ( M = Mo or W)
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批准号:0515835
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:2005
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负责人:Malcolm Chisholm
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依托单位:
Multiple Bonds in Ordered Assemblies
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批准号:0131832
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:2002
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负责人:Malcolm Chisholm
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依托单位:
Multiple Bonds Between Metal Atoms. Studies of Synthesis, Substitutional Behavior, Reactivity, Electronic Structure and Macromolecular Chemistry
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批准号:9874995
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项目类别:Continuing Grant
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资助金额:$43.0万
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财政年份:1999
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负责人:Malcolm Chisholm
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依托单位:
Developing the Chemistry of Multiple Bonds Between Metal Atoms: From Studies of Coordination Chemistry and Reactivity to One-Dimensional Polymers and Metallomesogens
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批准号:9405134
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项目类别:Continuing Grant
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资助金额:$84.5万
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财政年份:1994
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负责人:Malcolm Chisholm
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依托单位:
Indiana University Molecular Structure Center Upgrade
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批准号:9113668
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项目类别:Standard Grant
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资助金额:$23.72万
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财政年份:1991
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负责人:Malcolm Chisholm
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依托单位:
Long & Medium Term Research: Electronic Band Structures andChemical Bonding in Mixed Organic/Organometallic Charge Transfer Salts and Phosphate Tungsten Bronzes
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批准号:9007963
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项目类别:Standard Grant
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资助金额:$3.13万
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财政年份:1991
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负责人:Malcolm Chisholm
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依托单位:
Fundamental Aspects of the Dinuclear Chemistry of Molybdenum and Tungsten
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批准号:8604369
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项目类别:Continuing Grant
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资助金额:$53.5万
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财政年份:1986
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负责人:Malcolm Chisholm
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依托单位:
U.S.-Federal Republic of Germany (FRG) Joint Seminar: "Fundamental Reaction Pathways at Dinuclear and Polynuclear Transition Metal Centers," Koenigstein/Taunus, FRG 9/2-6/85
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批准号:8405071
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项目类别:Standard Grant
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资助金额:$1.39万
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财政年份:1985
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负责人:Malcolm Chisholm
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依托单位:
Transition Metal Chemistry (Chemistry)
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批准号:8217662
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项目类别:Continuing Grant
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资助金额:$24.17万
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财政年份:1983
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负责人:Malcolm Chisholm
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依托单位:
The Development of Dinuclear and Polynuclear/Cluster Transition Metal Chemistry
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批准号:8001678
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项目类别:Continuing Grant
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资助金额:$21.44万
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财政年份:1980
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负责人:Malcolm Chisholm
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依托单位:
Some Aspects of Transition Metal Chemistry
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批准号:7822403
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项目类别:Continuing Grant
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资助金额:$6.68万
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财政年份:1978
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负责人:Malcolm Chisholm
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依托单位:
Some Aspects of Transition Metal Chemistry
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批准号:7712543
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项目类别:Continuing Grant
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资助金额:$4.33万
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财政年份:1977
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负责人:Malcolm Chisholm
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依托单位:
Some Aspects of Transition Metal Chemistry
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批准号:7305016
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项目类别:Continuing Grant
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资助金额:$4.6万
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财政年份:1974
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负责人:Malcolm Chisholm
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依托单位:
国内基金
海外基金
基于构件软件的面向可靠安全Aspects建模和一体化开发方法研究
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批准号:60503032
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项目类别:青年科学基金项目
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资助金额:23.0万元
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批准年份:2005
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负责人:毛晓光
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依托单位: