An electron spin resonance study of isomerism in a Co0 acetylene π-complex

1987 ◽  
Vol 83 (12) ◽  
pp. 3565 ◽  
Author(s):  
Janice A. DeGray ◽  
Qingjin Meng ◽  
Philip H. Rieger
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Electron Spin Resonance Study ◽  
Π Complex ◽  
Spin Resonance ◽  
Spin Resonance Study

An Electron Spin Resonance Study of the Reaction of Nitrogen Dioxide with Metal Acetylacetonates

1973 ◽  
Vol 51 (24) ◽  
pp. 4072-4075 ◽  
Author(s):  
William H. Wolodarsky ◽  
Joshua Faniran ◽  
Jeffrey K. S. Wan
Keyword(s):  
Electron Spin Resonance ◽  
Nitrogen Dioxide ◽  
Electron Spin ◽  
Electron Spin Resonance Study ◽  
Organic Radical ◽  
Metal Acetylacetonates ◽  
Π Complex ◽  
Spin Resonance ◽  
Lower Oxidation ◽  
Spin Resonance Study

The reaction of nitrogen dioxide with several metal acetylacetonates was studied by electron spin resonance. Those metal complexes that have stable lower oxidation state, (i.e. Cu(II), Fe(III), Co(III), and VO(II)) react to form iminoxy radicals, while those metals not readily reduced (i.e. Zn(II), Cr(III), and Ce(III)) do not give iminoxy radicals. On the basis of the e.s.r. results, a simple mechanism was proposed to account for the formation of iminoxyacetylacetone radicals. A low temperature study of the e.s.r. spectra of the iminoxy-Cu(II)hexafluoroacetylacetonate suggested that a π-complex is formed between the organic radical and the Cu(II) compound.

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