scholarly journals Bonding Properties of the 1,2-Semiquinone Radical-Anionic Ligand in the [M(CO)4-n(L)n(DBSQ)] Complexes (M = Re, Mn; DBSQ = 3,5-di-tert-butyl-1,2-benzosemiquinone;n= 0, 1, 2). A Comprehensive Spectroscopic (UV−Vis and IR Absorption, Resonance Raman, EPR) and Electrochemical Study

1996 ◽  
Vol 35 (5) ◽  
pp. 1257-1265 ◽  
Author(s):  
František Hartl ◽  
Antonín Vlček
Keyword(s):  
Resonance Raman ◽  
Electrochemical Study ◽  
Semiquinone Radical ◽  
Ir Absorption ◽  
Tert Butyl ◽  
Anionic Ligand ◽  
Absorption Resonance ◽  
Bonding Properties

scholarly journals Protein Dynamics in an Intermediate State of Myoglobin: Optical Absorption, Resonance Raman Spectroscopy, and X-Ray Structure Analysis

2000 ◽  
Vol 78 (4) ◽  
pp. 2081-2092 ◽  
Author(s):  
Niklas Engler ◽  
Andreas Ostermann ◽  
Alexandra Gassmann ◽  
Don C. Lamb ◽  
Valeri E. Prusakov ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Optical Absorption ◽  
Protein Dynamics ◽  
Structure Analysis ◽  
Intermediate State ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
X Ray ◽  
Absorption Resonance

Absorption, resonance Raman and Raman excitation spectra of lanthanum dimers in argon matrices

2000 ◽  
Vol 262 (1) ◽  
pp. 25-29 ◽  
Author(s):  
Yifei Liu ◽  
Li Fang ◽  
Xiaole Shen ◽  
Xiaoyu Chen ◽  
J.R. Lombardi ◽  
...  
Keyword(s):  
Resonance Raman ◽  
Excitation Spectra ◽  
Absorption Resonance ◽  
Argon Matrices

Absorption, resonance Raman, and Raman excitation spectra of hafnium trimers

1997 ◽  
Vol 106 (20) ◽  
pp. 8339-8343 ◽  
Author(s):  
Huaiming Wang ◽  
Zhendong Hu ◽  
Hanae Haouari ◽  
Robert Craig ◽  
Yifei Liu ◽  
...  
Keyword(s):  
Resonance Raman ◽  
Excitation Spectra ◽  
Absorption Resonance

An electron spin resonance and CIDEP study of the photoreduction of tert-butyl-p-benzoquinones

1978 ◽  
Vol 56 (6) ◽  
pp. 869-877 ◽  
Author(s):  
Terry Foster ◽  
A. John Elliot ◽  
Babatunde B. Adeleke ◽  
Jeffrey K. S. Wan
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Chemical Equilibrium ◽  
Esr Spectroscopy ◽  
Semiquinone Radical ◽  
Phenoxy Radical ◽  
Decay Kinetics ◽  
Tert Butyl ◽  
Semiquinone Radicals ◽  
Spin Resonance

The photoreduction of 2-tert-butyl-p-benzoquinone and 2,5- and 2,6-di-tert-butyl-p-benzoquinone were studied by esr spectroscopy. In the photolysis of 2,6-di-tert-butyl-p-benzoquinone, only one semiquinone radical was observed and its decay kinetics were monitored by esr. The reduction of the triplet 2-tert-butyl-p-benzoqinone leads to the formation of isomeric semiquinone radicals 1 and 2 in the primary photochemical processes, and this is then followed by a chemical equilibrium between the two isomeric radicals. The relative rates of formation of the two radicals cannot be monitored by conventional esr methods but the CIDEP results show that the formation of radical 2 is about five to seven times faster than that of radical 1. A secondary reaction of the phenoxy radical with a product benzohydrofuran 4 leads to the observation of a polarized radical 3 which derives all its polarization from the primary phenoxy radical.

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