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Polarographic behaviour of p-diacetylbenzene ; an example of a compound with two electroactive centers 对二乙酰苯的极谱行为具有两个电活性中心的化合物的例子
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80124-9
Yu. Kargin , O. Manousek, P. Zuman
{"title":"Polarographic behaviour of p-diacetylbenzene ; an example of a compound with two electroactive centers","authors":"Yu. Kargin ,&nbsp;O. Manousek,&nbsp;P. Zuman","doi":"10.1016/0022-0728(66)80124-9","DOIUrl":"10.1016/0022-0728(66)80124-9","url":null,"abstract":"<div><p><em>p</em>-Diacetylbenzene is reduced at pH 2–5 in the diprotonised form in a reversible two-electron step to a bi-radical with a half-life of the order of seconds. Reversibility was confirmed by single-sweep and commutator methods. At pH-values below 2 the reversibility is perturbed by transformation of the bi-radical into <em>p</em>-(1-hydroxyethyl)acetophenone in an acid-catalysed reaction. The same product results also at pH-values above 5, where the reversibility is affected either by a base-catalysed deactivation of the bi-radical or by the formation of a monoprotonated form, reduced irreversibly in two successive steps.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 443-461"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80124-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 37
Automatic and coulometric titrations in studies of chemical kinetics 化学动力学研究中的自动和库仑滴定
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80116-X
Peter W. Carr , Louis Meites
{"title":"Automatic and coulometric titrations in studies of chemical kinetics","authors":"Peter W. Carr ,&nbsp;Louis Meites","doi":"10.1016/0022-0728(66)80116-X","DOIUrl":"10.1016/0022-0728(66)80116-X","url":null,"abstract":"<div><p>The rate constants for the disproportionations of uranium(V) in perchlorate solutions having hydrogen-ion concentrations between 0.01 and 1.9 <em>M</em> have been evaluated by adding a solution of chromium(II) at a constant rate to one of uranium (VI), employing a vibrating dropping mercury electrode to follow the variation of the concentration of either uranium(VI) or uranium(V). The resulting values are in acceptable agreement with those obtained by other techniques.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 373-384"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80116-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
An electronic device for automatic precision measurement of polarographic drop-times on single drops and for recording complete electrocapillary curves 一种自动精确测量单滴极谱滴下时间和记录完整电毛细管曲线的电子装置
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80136-5
B. Nygärd, K. Johansson, J. Olofsson
{"title":"An electronic device for automatic precision measurement of polarographic drop-times on single drops and for recording complete electrocapillary curves","authors":"B. Nygärd,&nbsp;K. Johansson,&nbsp;J. Olofsson","doi":"10.1016/0022-0728(66)80136-5","DOIUrl":"10.1016/0022-0728(66)80136-5","url":null,"abstract":"<div><p>The main principles of a new device for measuring polarographic drop-times is described. The instrument uses the periodic change of the electric impedance of the falling mercury drop to control an oscillator circuit. The equipment can be adapted to a normal d.c. polarograph. When it is connected with an XY-recorder it is possible to register complete electrocapillary curves. The method is illustrated by examples with strongly adsorbed sulphur- and selenium-compounds. On single drops, with the normal drop-time 3–5 sec, the standard deviation is less than 1 msec.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 564-572"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80136-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Polarographic behavior of warfarin and related compounds 华法林及其相关化合物的极谱行为
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80133-X
S. Wawzonek, T.W. McIntyre
{"title":"Polarographic behavior of warfarin and related compounds","authors":"S. Wawzonek,&nbsp;T.W. McIntyre","doi":"10.1016/0022-0728(66)80133-X","DOIUrl":"10.1016/0022-0728(66)80133-X","url":null,"abstract":"<div><p>Polarographic data obtained for Warfarin and related coumarins point to an open structure for Warfarin. The reduction of this compound occurs at a more negative potential than 4-hydroxycoumarin.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 544-546"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80133-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
A study of the electro reduction of metaphosphate in molten LiCl-KCl eutectic 偏磷酸盐在熔融LiCl-KCl共晶中电还原的研究
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80135-3
H.A. Laitinen, K.R. Lucas
{"title":"A study of the electro reduction of metaphosphate in molten LiCl-KCl eutectic","authors":"H.A. Laitinen,&nbsp;K.R. Lucas","doi":"10.1016/0022-0728(66)80135-3","DOIUrl":"10.1016/0022-0728(66)80135-3","url":null,"abstract":"<div><p>The reduction of trimetaphosphate in LiCl-KCl eutectic has been studied over the temperature range 450–700° using voltammetry, chronopotentiometry, and coulometry. The reduction process was observed to be very complex even at the highest temperatures because of prior chemical reactions. A reduction scheme is proposed that is consistent with experimental observations.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 553-563"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80135-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
The comparison of half-wave potentials in different solvents 不同溶剂中半波电位的比较
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80131-6
H. Schnider, H. Strehlow
{"title":"The comparison of half-wave potentials in different solvents","authors":"H. Schnider,&nbsp;H. Strehlow","doi":"10.1016/0022-0728(66)80131-6","DOIUrl":"10.1016/0022-0728(66)80131-6","url":null,"abstract":"","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 530-534"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80131-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Zum problem der idealen quecksilbertropfelektrode 找出一个天王星的线索
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80118-3
J. Flemming, H. Berg
{"title":"Zum problem der idealen quecksilbertropfelektrode","authors":"J. Flemming,&nbsp;H. Berg","doi":"10.1016/0022-0728(66)80118-3","DOIUrl":"10.1016/0022-0728(66)80118-3","url":null,"abstract":"<div><p>From the comparison of the <em>i</em>-<em>t</em> curves, obtained with thin-walled pointed capillaries, with the equations of koutecky and matsuda it is found that :</p><p>1. The majority of the first <em>i</em>-<em>t</em> curve is represented by Koutecky's equation.</p><p>2. Screening is not important for the deviations at the beginning of the drop life.</p><p>3. An improved agreement between experiment and theory can be obtained with a time-dependent correction term + (<em>b</em> +[39—<em>b</em>]<em>t</em>/τ) (following the idea of <span>Hans</span>) in the Koutecky equation.</p><p>4. The remaining deviation at the beginning of the drop-life (up to about 0.2 sec) can perhaps be given a physical meaning with a new equation.</p><p>5. The thin-walled pointed capillary can reduce but not eliminate the depletion effect.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 391-396"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80118-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Mark Freiherr Von Stackelberg 马克-弗莱赫尔-冯-斯塔克贝格
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80115-8
{"title":"Mark Freiherr Von Stackelberg","authors":"","doi":"10.1016/0022-0728(66)80115-8","DOIUrl":"https://doi.org/10.1016/0022-0728(66)80115-8","url":null,"abstract":"","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 365-372"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80115-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136937016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental studies of negative resistance of galvanic cells and the undamped electric oscillation generated by electrochemical oscillators 原电池负电阻及电化学振荡器产生无阻尼电振荡的实验研究
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80123-7
Reita Tamamushi, Kiyoshi Matsuda
{"title":"Experimental studies of negative resistance of galvanic cells and the undamped electric oscillation generated by electrochemical oscillators","authors":"Reita Tamamushi,&nbsp;Kiyoshi Matsuda","doi":"10.1016/0022-0728(66)80123-7","DOIUrl":"10.1016/0022-0728(66)80123-7","url":null,"abstract":"<div><p>The equivalent impedance, measured at relatively low frequencies ( ≲ 200 <span><math><mtext>c</mtext><mtext>sec</mtext></math></span>), of galvanic cells, DME/In(III), 1 <em>M</em> NaBr/Hg-pool and DME/Ni(II), 1 <em>M</em> KSCN/Hg-pool, was shown to give a negative resistance when the DME was negatively polarized. The mechanism of the electrode reactions of the DME/In(III)-NaBr and DME/Ni(II)-KSCN systems was assumed to be similar to that proposed for the DME/ In(III)-KSCN system.</p><p>These galvanic cells produced undamped oscillating currents when used as part of an electrochemical oscillator. The oscillation was almost purely sinusoidal, and the observed frequencies were in relatively good agreement with the calculated values.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 436-442"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80123-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
The dependence of the double-layer charge on the platinum hydrogen electrode surface upon the potential 铂氢电极表面的双层电荷对电位的依赖性
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80128-6
A. Frumkin, O. Petry, R. Marvet
{"title":"The dependence of the double-layer charge on the platinum hydrogen electrode surface upon the potential","authors":"A. Frumkin,&nbsp;O. Petry,&nbsp;R. Marvet","doi":"10.1016/0022-0728(66)80128-6","DOIUrl":"10.1016/0022-0728(66)80128-6","url":null,"abstract":"","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 504-515"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80128-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
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