Nature of nitric oxide and nitrogen dioxide adsorbed on chromium and nickel exchanged zeolites. Electron spin resonance and infra-red study

1973 ◽  
Vol 69 (0) ◽  
pp. 1475 ◽  
Author(s):  
Claude Naccache ◽  
Younès Ben Taarit
Keyword(s):  
Nitric Oxide ◽  
Electron Spin Resonance ◽  
Nitrogen Dioxide ◽  
Electron Spin ◽  
Spin Resonance ◽  
Infra Red

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.

Infra red and electron spin resonance studies of clays representative of the sedimentary evolution of the Basin of Autun

Clay Minerals ◽  
1978 ◽  
Vol 13 (3) ◽  
pp. 299-308 ◽  
Author(s):  
F. Elsass ◽  
D. Olivier
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Sedimentary Evolution ◽  
Three Samples ◽  
Spin Resonance ◽  
Infra Red

AbstractThree samples have been selected to represent the sedimentary variations of the Basin of Autun. IR and ESR techniques have been used to study the sheet composition of the different kinds of clays. The kaolinites are fire clays with two different degrees of crystallinity. The illites have a muscovite origin and belong to the 1 M polytype with mainly tetrahedral Al3+ and Fe3+ substitutions but also with some octahedral Fe3+ substitutions. The dioctahedral phyllosilicates contain mostly divalent and trivalent octahedral substitutions.

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