Optical and electron spin resonance studies of copper(II), nickel(II) and oxovanadium(IV) complexes of water-soluble phthalocyanine and porphyrazine chelates absorbed on sephadex resins, and the effect of added dithionite

1983 ◽  
Vol 79 (7) ◽  
pp. 1123 ◽  
Author(s):  
Andrew Skorobogaty ◽  
Robert Lancashire ◽  
Thomas D. Smith ◽  
John R. Pilbrow ◽  
Geoffrey R. Sinclair
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Water Soluble ◽  
Spin Resonance

MNII-FULVIC ACID COMPLEXING EQUILIBRIUM MEASUREMENTS BY ELECTRON SPIN RESONANCE SPECTROMETRY

1977 ◽  
Vol 57 (1) ◽  
pp. 47-53 ◽  
Author(s):  
D. S. GAMBLE ◽  
M. SCHNITZER ◽  
D. S. SKINNER
Keyword(s):  
Electron Spin Resonance ◽  
Ion Exchange ◽  
Fulvic Acid ◽  
Electron Spin ◽  
Weighted Average ◽  
Outer Sphere ◽  
Water Soluble ◽  
Exchange Method ◽  
Spin Resonance ◽  
Esr Spectrometry

Electron spin resonance (ESR) spectrometry was used to determine weighted average equilibrium functions [Formula: see text] for water-soluble complexes formed between fulvic acid and divalent manganese. [Formula: see text] values ranged from 0.2 × 10−2 (at pH 6.15) to 0.5 × 10−3 (at pH 6.45) and were in excellent agreement with [Formula: see text] values determined previously for Mn–fulvic acid complexes by an ion-exchange method. The ESR method was found to be more sensitive, convenient and faster than the ion exchange procedure. From the data presented in this and in earlier publications it appears that MnII is bound simultaneously electrostatically and by hydrogen-bonding as Mn(OH2)62+ to fulvic acid donor groups in outer sphere complexing sites. These complexes are likely to be unsymmetrical.

Electron spin resonance and structural analysis of water soluble, alanine-rich peptides incorporating TO AC

1998 ◽  
Vol 95 (5) ◽  
pp. 957-966 ◽  
Author(s):  
Paul Hanson ◽  
D.JOE Anderson ◽  
Gary Martinez ◽  
Glenn Millhauser ◽  
Fernando Formaggio ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Structural Analysis ◽  
Electron Spin ◽  
Water Soluble ◽  
Spin Resonance
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