Physical Chemistry Chemical Physics p. 3820 - 3827 (2002)
Update date:2022-08-10
Topics:
Unwin
Zhang
The reduction of 7,7,8,8-tetracyanoquinodimethane (TCNQ) in 1,2-dichloromethane (DCE) and nitrobenzene (NB), by aqueous ferrocyanide, and the back reaction were studied by scanning electrochemical microscopy. The effect of galvanic potential at the interface between two immiscible electrolyte solutions (ITIES) on electron transfer (ET) rates, with different electrolyte concentrations in the organic phase was evaluated. The ET rate constants for the forward and back reaction depended strongly on the interfacial potential drop, with an apparent ET coefficient close to 0.5. TCNQ?- was confined to DCE, but transferred from NB to water under certain experimental conditions, which could complicate kinetic analysis. The ET kinetics for the water/DCE system were analyzed further using Marcus theory. Close to zero driving force, the rate constants for the forward and back reaction were similar and in good agreement with predictions from Marcus theory with a sharp liquid/liquid interface. At equilibrium (when the forward and back ET rate constants were equal), the sharp boundary model for the ITIES predicted a bimolecular rate constant close to that measured experimentally.
View MoreJiangsu Feymer Technology Co., Ltd.
Contact:+86-512-58110622/58110118
Address:Fenghuang Town, Zhangjiagang City, Jiangsu Province, China
Contact:+1-973-357-0577
Address:10 Taft Rd.
Changsha Huajing Powdery Material Technological Co., Ltd.
Contact:86-731-88879686
Address:Building 2, West Garden, Main Campus of Central South University, Changsha, Hunan Province, China
Taizhou KEDE Chemical.Co.,Ltd.
Contact:86-576-84613060
Address:Jiangkou Chemical Zoon
lianyungang jinkang pharmaceutical technology co., ltd.
Contact:008651885445517
Address:Jinshan industrial park, Ganyu county, Lianyungang, Jiangsu Province, 222115, China
Doi:10.1021/jo01050a502
(1962)Doi:10.1002/ejoc.201801128
(2018)Doi:10.1007/s10847-021-01088-0
(2021)Doi:10.1016/j.tetlet.2020.152760
(2021)Doi:10.1111/j.1365-2621.2002.tb08746.x
(1933)Doi:10.1021/acs.inorgchem.5b00342
(2015)