An Electron Spin Resonance Study of a Rhodium(I) Molecular Oxygen Complex in Solution

1972 ◽  
Vol 50 (4) ◽  
pp. 590-592 ◽  
Author(s):  
B. R. James ◽  
F. T. T. Ng ◽  
Ei. Ochiai
Keyword(s):  
Electron Spin Resonance ◽  
Molecular Oxygen ◽  
Electron Spin ◽  
Electron Spin Resonance Study ◽  
Paramagnetic Species ◽  
Oxygen Complex ◽  
Spin Resonance ◽  
Spin Resonance Study

Electron spin resonance studies on the oxygenation of the rhodium(I) cyclooctene complex [RhCl(C8H14)2]2, in N,N-dimethylacetamide (DMA) solution containing chloride show the presence of a paramagnetic species. This is thought to involve a rhodium(II)–superoxide [Formula: see text] species which is likely responsible for some previously reported autoxidation reactions.

Electron spin resonance study of the 1,3,5-trinitrobenzene–NaOH system

1970 ◽  
Vol 48 (21) ◽  
pp. 3440-3442 ◽  
Author(s):  
A. R. Norris ◽  
A. Breck ◽  
W. Depew ◽  
J. K. S. Wan
Keyword(s):  
Electron Spin Resonance ◽  
Sodium Hydroxide ◽  
Hyperfine Structure ◽  
Electron Spin ◽  
Aqueous System ◽  
Electron Spin Resonance Study ◽  
Paramagnetic Species ◽  
Spin Resonance ◽  
Spin Resonance Study

Electron spin resonance spectra were observed in an aqueous system containing 1,3,5-trinitrobenzene and concentrated sodium hydroxide at 0 to 40 °C. From the hyperfine structure of the spectra and temperature studies, it is concluded that the paramagnetic species is a radical generated by reduction of a 1,3,5-trinitrobenzene–OH− σ-complex. The spectral assignments were supported by using deuterated 1,3,5-trinitrobenzene.

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