Resonance Raman spectrum of a deuterated crystal violet: [p(CH3)2N•C6D4]3C+Cl−

1981 ◽  
Vol 59 (6) ◽  
pp. 964-967 ◽  
Author(s):  
S. Sunder ◽  
H. J. Bernstein
Keyword(s):  
Aqueous Solution ◽  
Raman Spectrum ◽  
Raman Spectra ◽  
Crystal Violet ◽  
Resonance Raman ◽  
Resonance Raman Spectrum ◽  
Dilute Aqueous Solution ◽  
Resonance Raman Spectra

Resonance Raman spectra have been obtained for a deuterated crystal violet [p(CH3)2N•C6D4]3C+Cl−, as a dilute aqueous solution. The assignment of some of the strong features seen in the spectra of crystal violet and deuterated crystal violet is discussed.

scholarly journals Resonanz-Raman-Spektrum von Tetrabutylammoniiimoktaiododirhenat(III), [(n-C4H9)4N]2[Re2I8] Resonance Raman Spectrum of Tetrabutylammoniumoctaiododirhenate(III), [(n-C4H9)4N]2[Re2l8]

1979 ◽  
Vol 34 (9) ◽  
pp. 1240-1242 ◽  
Author(s):  
W. Preetz ◽  
G. Peters ◽  
L. Rudzik
Keyword(s):  
Raman Spectrum ◽  
Raman Spectra ◽  
Resonance Raman ◽  
Spectroscopic Constants ◽  
Resonance Raman Spectrum ◽  
Electronic Band ◽  
Band Maximum ◽  
Resonance Raman Spectra

Abstract Irradiation of [(n-C4H9)4N]2[Re2l8] at 80 K with exciting laser lines, which approximately coincide with the electronic band maximum at 520 nm, exhibits resonance Raman spectra. Overtone progressions of ν1(Re-Re) and ν2(Re-I), both A1g, and many combination tones are observed. The spectroscopic constants are calculated to be ω1 =258,5 cm -1 , x11 = - 0,42 cm-1 ; ω2 -153,0 cm-1 , x12 = - 0,32 cm-1.

The resonance Raman spectra and excitation profiles of some 4-sulfamylazobenzenes

1977 ◽  
Vol 55 (9) ◽  
pp. 1444-1453 ◽  
Author(s):  
Kamal Kumar ◽  
P. R. Carey
Keyword(s):  
Raman Spectrum ◽  
Raman Spectra ◽  
Resonance Raman ◽  
Valence Bond ◽  
Wavelength Dependence ◽  
Accurate Estimation ◽  
Intensity Changes ◽  
Stretching Vibration ◽  
Resonance Raman Spectra ◽  
Frequency Changes

The resonance Raman spectra of three pharmacologically important sulfonamides, 4-sulfamyl-4′-dimethylaminoazobenzene (1), 4-sulfamyl-4′-hydroxyazobenzene (2), and 4-sulfamyl-4′-aminoazobenzene (3), are compared with those of analogues lacking the sulfonamide group. The —SO2NH2 moiety does not directly contribute intense or moderately intense bands to the resonance Raman spectra of 1, 2, and 3. However, —SO2NH2 ionization is reflected by frequency changes in a band near 1140 cm−1 and intensity changes in the 1420 cm−1 region. The normal Raman spectrum of 2 confirms that the intensity changes reflect —SO2NH2 ionization rather than unrelated changes in vibronic coupling. The effect of —OH ionization on the resonance Raman spectrum of 2 emphasizes that caution must be exercised when relating spectral perturbations to changes in contributions from valence bond type structures. Resonance Raman excitation profiles for the 1138, 1387, and 1416 cm−1 bands of 2 show that these bands gain intensity by coupling with the electronic transitions in the 240 to 450 nm region and that, more than 1000 cm−1 to the red of λmax, the wavelength dependence can be closely reproduced by the FB type terms of Albrecht and Hutley. The excitation profile for each band shows evidence for structure in the 470 nm region, although lack of sufficient excitation wavelengths prevents accurate estimation of the spacing. Under conditions of rigorous resonance the intense Raman lines all occur in the 1400 cm−1 region, i.e. they are 'bunched' in the region known to contain the —N=N— stretching vibration.

Resonance Raman spectrum of crystal violet

1979 ◽  
Vol 8 (6) ◽  
pp. 305-310 ◽  
Author(s):  
L. Angeloni ◽  
G. Smulevich ◽  
M. P. Marzocchi
Keyword(s):  
Raman Spectrum ◽  
Crystal Violet ◽  
Resonance Raman ◽  
Resonance Raman Spectrum
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