ChemInform Abstract: ELECTRON PARAMAGNETIC RESONANCE AND ELECTRONIC SPECTRAL EVIDENCE FOR ISOMERS RESULTING FROM BASAL AND AXIAL LIGATION OF BIS(HEXAFLUOROACETYLACETONATO)COPPER(II) BY TRIPHENYLPHOSPHINE

1974 ◽  
Vol 5 (50) ◽  
Author(s):  
B. B. WAYLAND ◽  
V. K. KAPUR
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Paramagnetic Resonance ◽  
Axial Ligation ◽  
Spectral Evidence ◽  
Electron Paramagnetic

scholarly journals A tentative approach to the molecular structure of humic acids: the spectral evidence for a derivation of humic acids from plant-borne esters. 1. The electron paramagnetic resonance (EPR) spectra.

1979 ◽  
Vol 27 (1) ◽  
pp. 79-91 ◽  
Author(s):  
G. Minderman
Keyword(s):  
Molecular Structure ◽  
Electron Paramagnetic Resonance ◽  
Humic Acids ◽  
Epr Spectra ◽  
Paramagnetic Resonance ◽  
Spectral Evidence ◽  
Heterogeneous Polymers ◽  
Electron Paramagnetic

It is suggested, from the evidence of EPR spectra, that humic acids are heterogeneous polymers of mixed esters derived from tannins. (Abstract retrieved from CAB Abstracts by CABI’s permission)

A Study of the Effect of Solvent and Temperature on the Electron Paramagnetic Resonance Parameters and Linewidths of Copper(II)bis(Diethyldithiocarbamate)

1974 ◽  
Vol 52 (24) ◽  
pp. 4016-4024 ◽  
Author(s):  
F. Geoffrey Herring ◽  
Robert L. Tapping
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Hyperfine Coupling ◽  
Hyperfine Coupling Constant ◽  
Rotational Correlation Time ◽  
Coupling Constant ◽  
Paramagnetic Resonance ◽  
Axial Ligation ◽  
Effect Of Solvent ◽  
Isotropic Hyperfine Coupling ◽  
Electron Paramagnetic

The effect of varying solvent and temperature on the e.s.r. parameters and linewidths of copper(II) bis(diethyldithiocarbamate) has been studied. The temperature and solvent dependences of the isotropic hyperfine coupling constant (a0) have been interpreted in terms of vibronic and axial ligation effects. The rotational correlation time, τR, of Cu(DEDC)2 has been measured in the solvents employed. The values of τR measured at 300 K have been used to obtain the anisotropic interaction parameter, κ, which is found to correlate roughly with the dipole moment and molar refractivity of the solvent.

Spectral Evidence for Heterodimerization of Water-Soluble Metalloporphyrins

1998 ◽  
Vol 02 (01) ◽  
pp. 61-68 ◽  
Author(s):  
SAFİYE SAĞ ERDEM
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Ir Spectra ◽  
Water Soluble ◽  
Paramagnetic Resonance ◽  
Metal Interactions ◽  
Spectral Evidence ◽  
Metal Metal ◽  
Electron Paramagnetic

The formation of water-soluble metalloporphyrin heterodimers from Fe ( III ), Cu ( II ) and Ni ( II ) complexes of 5,10,15,20-tetrakis(4-carboxyphenyl) porphyrin and 5,10,15,20-tetrakis(4-N-methylpyridyl)porphyrin has been investigated using UV-vis, IR and electron paramagnetic resonance spectra. Absorption and IR spectra confirmed the formation of dimers and electron paramagnetic resonance spectra showed evidence for the metal-metal interactions in the dimers.

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