An Isotopic Probe into Bonding Changes due to Electron Addition
An Isotopic Probe into Bonding Changes due to Electron Addition
批准号:
9011801
负责人:
Cheryl Stevenson
金额:
$10.5万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1990
资助国家:
美国
项目状态:
已结题
起止时间:
1990-08-15 至 1994-07-31
中文摘要
有机动力学计划将支持杰拉尔德·R·史蒂文森教授在伊利诺伊州立大学化学系进行的“电子加成引起的成键变化的同位素探针”的研究。为了对芳香性的本质产生新的探索,人们正在获得热力学同位素效应。核磁共振光谱、电子自旋共振光谱和量热技术正在被用来测量控制从还原的环烯阴离子自由基或二阴离子到中性环烯和过氚化中性环烯的一个和两个电子转移反应的热力学参数。由此产生的热力学同位素效应将与环烯在一个或两个电子加成时芳香性的变化有关。这些数据将对芳香性的本质产生新的探索。该“探头”将在其他高芳香族环烯系统上进行试验。
英文摘要
The Organic Dynamics Program will support Professor Gerald R. Stevenson's study of "An Isotopic Probe into Bonding Changes due to Electron Addition" in the Chemistry Department at Illinois State University. Thermodynamic isotope effects are being obtained in order to generate a new probe into the nature of aromaticity. Nuclear magnetic resonance spectroscopy, electron spin resonance spectroscopy, and calorimetric techniques are being used to measure the thermodynamic parameters controlling one and two electron transfer reactions from reduced annulene anion radicals or dianions to neutral annulenes and perdeuteriated neutral annulenes. The resulting thermodynamic isotope effects will be related to changes in the aromatic nature of annulenes upon one or two electron addition. These data will generate a new probe into the nature of aromaticity. The "probe" will be tried on other homoaromatic annulene systems.
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MRI: Acquisition of 400 MHz NMRs for Research and Education
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批准号:0722385
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项目类别:Standard Grant
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资助金额:$55.15万
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财政年份:2007
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负责人:Cheryl Stevenson
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依托单位:
Annulenylenes and Annulynes
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批准号:0415807
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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:2004
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负责人:Cheryl Stevenson
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依托单位:
Isotopic Perturbations in Aromatic Character and New Annulene Conformers
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批准号:0076742
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项目类别:Continuing Grant
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资助金额:$19.5万
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财政年份:2000
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负责人:Cheryl Stevenson
-
依托单位:
Solvent-Ion Pair Chiral Recognition
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批准号:9617066
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项目类别:Standard Grant
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资助金额:$18.0万
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财政年份:1997
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负责人:Cheryl Stevenson
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依托单位:
Purchase of 300 MHz NMR for Undergraduate Instruction
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批准号:9452437
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项目类别:Standard Grant
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资助金额:$8.8万
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财政年份:1994
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负责人:Cheryl Stevenson
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依托单位:
An Isotopic Probe into Electron Distribution in Aromatics and Homoaromatics
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批准号:9412036
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项目类别:Continuing Grant
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资助金额:$13.75万
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财政年份:1994
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负责人:Cheryl Stevenson
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依托单位:
Isotope Enrichment Via Electron Attachment
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批准号:8814343
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项目类别:Standard Grant
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资助金额:$5.0万
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财政年份:1989
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负责人:Cheryl Stevenson
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依托单位:
Purchase of Electron Spin Resonance Console for Research in Chemistry (Chemistry)
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批准号:8304947
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项目类别:Standard Grant
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资助金额:$3.45万
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财政年份:1984
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负责人:Cheryl Stevenson
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依托单位:
Alkaline Earth Metal Systems and Alkali Metal Anion Radical Solvation Enthalpies
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批准号:8411827
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项目类别:Continuing Grant
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资助金额:$19.59万
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财政年份:1984
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负责人:Cheryl Stevenson
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依托单位:
Data Acquisition System For Thermodynamic and Structural Determinations
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批准号:8000535
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项目类别:Standard Grant
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资助金额:$2.3万
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财政年份:1980
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负责人:Cheryl Stevenson
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依托单位:
海外基金