Control of Chemical Selectivity by Effect of Shape Similarity between Solute and Solvent Molecules
通过溶质和溶剂分子之间形状相似性的影响来控制化学选择性
基本信息
- 批准号:05640613
- 负责人:
- 金额:$ 1.28万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1993
- 资助国家:日本
- 起止时间:1993 至 1994
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In order to develop a more "precise" and novel type of method for control of chemical selectivity, we examined correlation of the selectivity and the pattern of temperature dependence of the selectivity in oxidation of a pair of associating thiols (I and II) , each having R^1 or R^2 as a substituent, with shape similarity between substituents of solute and solvent molecules.1. The selectivity (R^1=Ph, R^2=n-C_5H_<11>) was higher in methanol-n-propyl alcohol than in methanol-isopropyl alchol (at 20 and 35゚C).2. The selectivity (R^1=Ph, R^2=i-C_5H_<11>) in hydrocarbon-water-n-propyl alcohol (mole fraction of hydrocarbon=0.50) increased in going from cyclohexane, n-hexane, and to isohexane.3. The selectivity (R^1=Ph, R^2=i-C_5H_<11>) exhibited a maximum at ca.35゚C in benzene-ethanol (mole fraction of ethanol=0.50) , showed a minimum in isohexane-ethanol, and decreased with temperature in n-hexane-ethanol.4. The selectivity (R^1=cyclo-C_5H_9, R^2=n-C_4H_9) increased with temperature both in methanol-n-butyl alcohol (mole fraction of methanol=0.50) and in methanol-isobutyl alchol.It is evident from these results that (i) the selectivity increases when a substituent of a thiol is similar in shape to that of a solvent molecule and (ii) the pattern of temperature dependance of the selectivity alters markedly with the degree of shape similarity between substituents of solute and solvent molecules. This indicates that shape similarity effect becomes a novel type of method for control of chemical selectivity.
为了开发一种更“精确”和新颖的方法来控制化学选择性,我们研究了一对缔合硫醇(I和II)的氧化选择性的相关性和温度依赖模式,每个都有R^1或R^2作为取代基,溶质分子和溶剂分子的取代基之间的形状相似。甲醇-正丙醇的选择性(R^1=Ph, R^2=n-C_5H_<11>)高于甲醇-异丙醇(20和35‰)。在烃类摩尔分数=0.50时,烃类水-正丙醇从环己烷、正己烷和异己烷的选择性(R^1=Ph, R^2=i-C_5H_<11>)均有所提高。在苯-乙醇(乙醇的摩尔分数=0.50)中,R^1=Ph, R^2=i-C_5H_<11>)的选择性在ca.35 oc时最高,在异己烷-乙醇中最低,在正己烷-乙醇中随温度升高而降低。甲醇-正丁醇(甲醇摩尔分数=0.50)和甲醇-异丁醇的选择性(R^1=环c_5h_9, R^2=n-C_4H_9)均随温度升高而升高。从这些结果可以明显看出:(1)当硫醇取代基与溶剂分子的取代基形状相似时,选择性增加;(2)选择性的温度依赖模式随着溶质分子和溶剂分子取代基形状相似的程度而显著改变。这表明形状相似效应成为控制化学选择性的一种新型方法。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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ENDO Tadashi其他文献
The Present Conditions and the & end of the Career Education in St. Petersburg City, in IWASAKIShogo(ed.)
现状及
- DOI:
- 发表时间:
2008 - 期刊:
- 影响因子:0
- 作者:
ENDO Tadashi;MURACHI Toshimi;et. al. - 通讯作者:
et. al.
近代沖縄における発音矯正の教育史-宮良長包作詞作曲「発音唱歌」(1919年)を中心に-
近代冲绳的发音矫正教育史 - 以长木宫良作词作曲的《发音歌》(1919年)为中心 -
- DOI:
- 发表时间:
2007 - 期刊:
- 影响因子:0
- 作者:
ENDO Tadashi;MURACHI Toshimi;et. al.;近藤 健一郎 - 通讯作者:
近藤 健一郎
民謡の五線採譜化と音楽創作-近代沖縄における宮良長包の取り組みを中心に-
民谣的五线谱转录和音乐创作 - 关注近代冲绳宫良长高的努力 -
- DOI:
- 发表时间:
2006 - 期刊:
- 影响因子:0
- 作者:
ENDO Tadashi;MURACHI Toshimi;et. al.;近藤 健一郎;丸山恭司(共著);三島わかな - 通讯作者:
三島わかな
ENDO Tadashi的其他文献
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{{ truncateString('ENDO Tadashi', 18)}}的其他基金
a comparative study on classroom administration of Japan and Russia
日俄课堂管理比较研究
- 批准号:
20530841 - 财政年份:2008
- 资助金额:
$ 1.28万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A research on the transition of the classroom-teacher arrangement and the change in classroom teaching
课堂—教师安排的变迁与课堂教学的变革研究
- 批准号:
15530492 - 财政年份:2003
- 资助金额:
$ 1.28万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A Research on Education in the Russian East Regions
俄罗斯东部地区教育研究
- 批准号:
11691004 - 财政年份:1999
- 资助金额:
$ 1.28万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Function of spinel related phosphors and its application
尖晶石类荧光粉的功能及其应用
- 批准号:
11555232 - 财政年份:1999
- 资助金额:
$ 1.28万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Synthesis and electrical property of tin double oxides with tunnel framework
隧道骨架锡双氧化物的合成及电学性能
- 批准号:
10450237 - 财政年份:1998
- 资助金额:
$ 1.28万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
STUDY ON THE CLAY INTERLAMELLA REACTION FOR HIGHLY ORIENTATED MOLECULAR STRUCTURE
高度定向分子结构的粘土层间反应研究
- 批准号:
05453124 - 财政年份:1993
- 资助金额:
$ 1.28万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
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