Influence of porphyrin radical type on vanadium-oxygen double bond strength in vanadyl porphyrin cation radicals: implications for heme protein intermediates

1990 ◽  
Vol 29 (10) ◽  
pp. 1996-2000 ◽  
Author(s):  
Kathleen A. Macor ◽  
Roman S. Czernuszewicz ◽  
Thomas G. Spiro
Keyword(s):  
Double Bond ◽  
Bond Strength ◽  
Heme Protein ◽  
Cation Radicals ◽  
Vanadyl Porphyrin ◽  
Radical Type ◽  
Porphyrin Cation

Insensitivity of Vanadyl−Oxygen Bond Strengths to Radical Type (2A1uvs2A2u) in Vanadyl Porphyrin Cation Radicals

1999 ◽  
Vol 38 (7) ◽  
pp. 1543-1547 ◽  
Author(s):  
Kazimierz Czarnecki ◽  
Leonard M. Proniewicz ◽  
Hiroshi Fujii ◽  
David Ji ◽  
Roman S. Czernuszewicz ◽  
...  
Keyword(s):  
Cation Radicals ◽  
Vanadyl Porphyrin ◽  
Bond Strengths ◽  
Radical Type ◽  
Oxygen Bond ◽  
Porphyrin Cation

Spin-density distributions in meso-alkyl/aryl hybrid porphyrin cation radicals

1988 ◽  
Vol 27 (8) ◽  
pp. 1510-1512 ◽  
Author(s):  
Michael Atamian ◽  
Richard W. Wagner ◽  
Jonathan S. Lindsey ◽  
David F. Bocian
Keyword(s):  
Spin Density ◽  
Alkyl Aryl ◽  
Cation Radicals ◽  
Density Distributions ◽  
Porphyrin Cation

Oxoferryl porphyrin cation radicals in model systems: Evidence for variable metal-radical spin coupling

1990 ◽  
Vol 58 (1-4) ◽  
pp. 2343-2348 ◽  
Author(s):  
E. Bill ◽  
E. L. Bominaar ◽  
X. -Q. Ding ◽  
A. X. Trautwein ◽  
H. Winkler ◽  
...  
Keyword(s):  
Spin Coupling ◽  
Model Systems ◽  
Cation Radicals ◽  
Porphyrin Cation ◽  
Metal Radical

Conformational and substituent effects on spin distributions in porphyrin cation radicals

1990 ◽  
Vol 94 (23) ◽  
pp. 8508-8511 ◽  
Author(s):  
M. W. Renner ◽  
R. J. Cheng ◽  
C. K. Chang ◽  
Jack. Fajer
Keyword(s):  
Substituent Effects ◽  
Cation Radicals ◽  
Spin Distributions ◽  
Porphyrin Cation

Adsorption of benzidines and anilines on Cu- and Fe-montmorillonites studied by resonance Raman spectroscopy

Clay Minerals ◽  
1988 ◽  
Vol 23 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Y. Soma ◽  
M. Soma
Keyword(s):  
Raman Spectroscopy ◽  
Double Bond ◽  
Raman Spectra ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Vapour Phase ◽  
Acid Sites ◽  
Type Structure ◽  
Cation Radicals

AbstractResonance Raman spectroscopy has been used to observe the formation of cation radicals in the adsorption of N,N,N',N'-tetramethylbenzidine (TMBD), benzidine, N,Ndimethylaniline (DMA) and aniline on Na-, Cu- and Fe-montmorillonites. Cation radicals of benzidine and TMBD, and their dications were formed at acid sites on the montmorillonite surface, or through the reduction of Cu or Fe interlayer ions, and were adsorbed in the interlayer. Their structures are represented by biphenoquinone type structure, where the inter-ring CC bond and the ring C-N bond have double bond characters. It was demonstrated from Raman spectra that DMA and aniline adsorbed on Cu-montmorillonite from the vapour phase dimerize to form TMBD and benzidine dications.

Long-Lived Porphyrin Cation Radicals Protected in Unimer Micelles of Hydrophobically-Modified Polyelectrolytes

1996 ◽  
Vol 29 (20) ◽  
pp. 6505-6509 ◽  
Author(s):  
Yotaro Morishima ◽  
Hiroyuki Aota ◽  
Kazunori Saegusa ◽  
Mikiharu Kamachi
Keyword(s):  
Cation Radicals ◽  
Hydrophobically Modified ◽  
Porphyrin Cation

ChemInform Abstract: Conformational and Substituent Effects on Spin Distributions in Porphyrin Cation Radicals

ChemInform ◽  
2010 ◽  
Vol 22 (8) ◽  
pp. no-no
Author(s):  
M. W. RENNER ◽  
R.-J. CHENG ◽  
C. K. CHANG ◽  
J. FAJER
Keyword(s):  
Substituent Effects ◽  
Cation Radicals ◽  
Spin Distributions ◽  
Porphyrin Cation
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