Resonance Raman spectra and excited-state geometry of the radical cation of p-dichlorobenzene

1989 ◽  
Vol 164 (4) ◽  
pp. 388-394 ◽  
Author(s):  
Tatsuhisa Kato ◽  
Naoki Muraki ◽  
Tadamasa Shida
2001 ◽  
Vol 115 (13) ◽  
pp. 6106-6114 ◽  
Author(s):  
Mrinalini Puranik ◽  
Siva Umapathy ◽  
Jaap G. Snijders ◽  
Jayaraman Chandrasekhar

2017 ◽  
Vol 121 (41) ◽  
pp. 7937-7946 ◽  
Author(s):  
Matthew S. Barclay ◽  
Timothy J. Quincy ◽  
David B. Williams-Young ◽  
Marco Caricato ◽  
Christopher G. Elles

1983 ◽  
Vol 61 (5) ◽  
pp. 809-816 ◽  
Author(s):  
J. W. Lewis ◽  
C. Sandorfy

The infrared and resonance Raman spectra of the two long-lived forms of triphenylformazan and several of its derivatives have been examined. The spectra of unsymmetrically 15N-labelled derivatives suggest that two tautomers exist for each of the two forms. This observation is confirmed by the spectra of 1-(p-halophenyl)-3,5-diphenylformazans. The spectra of the non-chelate forms of these latter compounds demonstrate that the position of the tautomeric equilibrium is influenced by the electron-attracting ability of the para-halo-substituent. A comparison of the resonance Raman spectra of the two forms leads to the conclusion that excited state proton transfer is the initial photoevent in the photochromism of the triphenylformazans.


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