Preparation and characterization of an A1u (Oxo) iron(IV) porphyrin .pi.-cation-radical complex

1992 ◽  
Vol 31 (6) ◽  
pp. 1110-1112 ◽  
Author(s):  
Hiroshi Fujii ◽  
Kazuhiko Ichikawa
Keyword(s):  
Cation Radical ◽  
Radical Complex

Detection and Characterization of the Lignin Peroxidase Compound II−Veratryl Alcohol Cation Radical Complex†

Biochemistry ◽  
1997 ◽  
Vol 36 (46) ◽  
pp. 14181-14185 ◽  
Author(s):  
Aditya Khindaria ◽  
Guojun Nie ◽  
Steven D. Aust
Keyword(s):  
Lignin Peroxidase ◽  
Cation Radical ◽  
Veratryl Alcohol ◽  
Radical Complex ◽  
Compound Ii

New π -Donor Molecules with a Pyrazino Group and their Conducting Salts

2001 ◽  
Vol 56 (3) ◽  
pp. 297-300 ◽  
Author(s):  
G. C. Papavassiliou ◽  
Yohji Misaki ◽  
Kazuko Takahashi ◽  
Jun-ichi Yamada ◽  
G. A. Mousdis ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Cation Radical ◽  
Charge Transfer Complexes ◽  
Edge Group

Abstract The preparation and characterization of some π-donors with a pyrazine-edge-group as well as with tetrathiapentalene-, thiophene-, and dihydrobenzoselenophene-spacer-groups are de­ scribed. Some of these donors give conducting charge transfer complexes with TCNQ and/or cation radical salts with I3-, BF4-and PF6-as counter anions.

Structural and Spectroscopic Characterization of a Charge-Separated Uranium Benzophenone Ketyl Radical Complex

2008 ◽  
Vol 130 (20) ◽  
pp. 6567-6576 ◽  
Author(s):  
Oanh P. Lam ◽  
Christian Anthon ◽  
Frank W. Heinemann ◽  
Joseph M. O’Connor ◽  
Karsten Meyer
Keyword(s):  
Spectroscopic Characterization ◽  
Ketyl Radical ◽  
Radical Complex ◽  
A Charge

Spectroelectrochemical characterization of meso triaryl-substituted Mn(IV), Mn(III) and Mn(II) corroles. Effect of solvent and oxidation state on UV-visible spectra and redox potentials in nonaqueous media

2014 ◽  
Vol 18 (12) ◽  
pp. 1131-1144 ◽  
Author(s):  
Bingbing Gao ◽  
Zhongping Ou ◽  
Xueyan Chen ◽  
Shi Huang ◽  
Bihong Li ◽  
...  
Keyword(s):  
Anion Radical ◽  
Cation Radical ◽  
Oxidation Mechanism ◽  
Central Metal ◽  
Redox Potentials ◽  
Nonaqueous Media ◽  
Visible Spectra ◽  
Phenyl Rings ◽  
Uv Visible

Two series of substituted manganese triarylcorroles were synthesized and characterized as to their electrochemical and spectroelectrochemical properties in CH 2 Cl 2, CH 3 CN and pyridine. The investigated compounds are represented as ( YPh )3 CorMn III and ( YPh )3 CorMn IV Cl , where Cor is a trianion of the corrole and Y is a Cl , F , H or CH 3 para-substituent on the three phenyl rings of the macrocycle. Each neutral Mn(III) corrole exists as a four-coordinate complex in CH 2 Cl 2 and CH 3 CN and as a five-coordinate species in pyridine. ( YPh )3 CorMn III undergoes two oxidations to stepwise generate a Mn(IV) corrole and a Mn(IV) π-cation radical. It also undergoes one reduction to generate a Mn(II) corrole in CH 2 Cl 2 or CH 3 CN . In contrast, the reduction of ( YPh )3 CorMn III leads to a Mn(III) corrole π-anion radical in pyridine. One oxidation is observed for ( YPh )3 CorMn IV Cl in CH 2 Cl 2 and CH 3 CN to generate a Mn(IV) corrole π-cation radical while Mn(III) and Mn(II) corroles are stepwise formed after reduction of the same compound. The second reduction of ( YPh )3 CorMn IV Cl in pyridine gives a Mn(III) π-anion radical as opposed to a Mn(II) corrole with an unreduced π-ring system. The neutral, reduced and oxidized forms of each corrole were characterized by electrochemistry and UV-visible spectroelectrochemistry and comparisons are made between the UV-visible spectra and redox potentials of the compounds in different central metal oxidation states. An overall reduction/oxidation mechanism in the three solvents is proposed.

scholarly journals Isolation and X-ray structural characterization of a dicationic homotrimer of 2,3,6,7-tetramethoxy-9,10-dimethylanthracene cation radical

2009 ◽  
Vol 50 (48) ◽  
pp. 6687-6690 ◽  
Author(s):  
Matthew J. Modjewski ◽  
Ruchi Shukla ◽  
Sergey V. Lindeman ◽  
Rajendra Rathore
Keyword(s):  
Structural Characterization ◽  
Cation Radical ◽  
X Ray

Effect of the Axial Ligand on the Reactivity of the Oxoiron(IV) Porphyrin π-Cation Radical Complex: Higher Stabilization of the Product State Relative to the Reactant State

2012 ◽  
Vol 51 (13) ◽  
pp. 7296-7305 ◽  
Author(s):  
Akihiro Takahashi ◽  
Daisuke Yamaki ◽  
Kenichiro Ikemura ◽  
Takuya Kurahashi ◽  
Takashi Ogura ◽  
...  
Keyword(s):  
Cation Radical ◽  
Axial Ligand ◽  
Product State ◽  
Radical Complex
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