Electron spin resonance studies of electron-transfer reactions with aromatic nitro-compounds in aqueous media

1966 ◽  
pp. 1130 ◽  
Author(s):  
W. E. Griffiths ◽  
G. F. Longster ◽  
J. Myatt ◽  
P. F. Todd
Keyword(s):  
Electron Transfer ◽  
Electron Spin Resonance ◽  
Electron Spin ◽  
Aqueous Media ◽  
Nitro Compounds ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Aromatic Nitro Compounds ◽  
Spin Resonance ◽  
Aromatic Nitro

Electron-transfer reactions in non-aqueous media. VII. Reduction of CoF(NH3)52+ and Co(HCOO)(NH3)52+ by copper(I) in dimethyl sulfoxide-water mixtures

1983 ◽  
Vol 36 (10) ◽  
pp. 1923 ◽  
Author(s):  
JMB Harrowfield ◽  
L Spiccia ◽  
DW Watts
Keyword(s):  
Electron Transfer ◽  
Dimethyl Sulfoxide ◽  
Aqueous Media ◽  
Mixed Solvents ◽  
Transfer Reactions ◽  
Aprotic Solvents ◽  
Aqueous Mixtures ◽  
Electron Transfer Reactions ◽  
Dipolar Aprotic Solvents ◽  
Sphere Mechanism

Previous work on the reduction of a series of cobalt(III) complexes by iron(II) in dipolar aprotic solvents and in aqueous mixtures has been extended to reduction by copper(I). The greater stability of copper(I) to disproportionation in these media has permitted the study of the reduction of CoF(NH3)52+ and Co(HCOO)(NH3)52+ in range of solvents over a number of temperatures with a precision not possible in previous studies in water. The results are consistent with an inner-sphere mechanism in which the copper(I) reductant is preferentially solvated by dimethyl sulfoxide to the exclusion of water in mixed solvents.

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