Electron spin resonance of di-t-butyl-ketyl alkali metal ion pairs

1977 ◽  
Vol 73 (7) ◽  
pp. 1729 ◽  
Author(s):  
Marina Brustolon ◽  
Luigi Pasimeni ◽  
Carlo Corvaja
Keyword(s):  
Electron Spin Resonance ◽  
Alkali Metal ◽  
Electron Spin ◽  
Metal Ion ◽  
Ion Pairs ◽  
Alkali Metal Ion ◽  
Spin Resonance

Photochemical reactions of fluoro-substituted ketones with amines, tetraphenylborates, and organometals: an electron spin resonance study

1980 ◽  
Vol 58 (6) ◽  
pp. 591-598 ◽  
Author(s):  
Kuang S. Chen ◽  
Terry Foster ◽  
Jeffrey K. S. Wan
Keyword(s):  
Alkali Metal ◽  
Metal Ion ◽  
Ion Pairs ◽  
Photochemical Reactions ◽  
Ammonium Ion ◽  
Electron Spin Resonance Study ◽  
Fluorine Substitution ◽  
Alkali Metal Ion ◽  
Spin Resonance ◽  
Spin Resonance Study

Ammonium ion-pairs, solvent-separated alkali-metal ion-pairs, and Group IVB organometallic adducts of fluoro-substituted ketones were generated photochemically. The structure and the controlling factors for the formation of contact ammonium ion-pair were deduced from the effects of solvent, amine, and fluorine substitution. The effect of fluorine on the formation of the alkali-metal ion-pairs and organometallic adducts was discussed.

Correlation of optical and electron spin resonance spectra for metal–electron species in alkali metal solutions

1977 ◽  
Vol 55 (11) ◽  
pp. 2017-2021 ◽  
Author(s):  
William Arthur Seddon ◽  
John Wallace Fletcher ◽  
Ron Catterall
Keyword(s):  
Electron Spin Resonance ◽  
Alkali Metal ◽  
Electron Spin ◽  
Ion Pairs ◽  
Solvent Polarity ◽  
Blue Shift ◽  
Esr Spectra ◽  
Absorption Bands ◽  
Continuous Transition ◽  
Spin Resonance

Pulse radiolysis of alkali metal cations (M+) in amines and tetrahydrofuran has demonstrated the formation of transient optical absorption bands attributed to a species of stoichiometry M. Such bands exhibit a distinct blue shift from that of es− observed in the same solvent. Comparisons with electron spin resonance (esr) spectra obtained in alkali metal solutions demonstrate that the blue shift can be correlated with the percent atomic character deduced for the species of the same stoichiometry. This correlation indicates that both the optical and esr spectra arise from the same species which, with decreasing solvent polarity, exhibits a continuous transition from well solvated ion-pairs to something approaching solvated atoms or tight ion-pairs.

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