Articles

Substituted styrene molecules included in cyclodextrins: a Raman spectroscopic study. Abstract Raman spectra of styrene (S), 3-fluorostyrene (3FS), 3-chlorostyrene (3CS) and 3-methylstyrene (3MS) and their complexes in α-, β- and γ-cyclodextrins (α-, β-, γCD) were recorded at various temperatures. The substituted styrene molecules were found to provide good group frequencies, namely, vCC and vCH, for…

Meta-substituted styrene molecules included in cyclodextrins: a Raman spectroscopic study. Abstract Raman spectra of styrene (S), 3-fluorostyrene (3FS), 3-chlorostyrene (3CS) and 3-methylstyrene (3MS) and their complexes in α-, β- and γ-cyclodextrins (α-, β-, γCD) were recorded at various temperatures. The substituted styrene molecules were found to provide good group frequencies, namely, vC=C and vC-H, for…

Conformational equilibria for 2- and 3-chlorostyrene: Raman and FTIR spectra and ab initio calculations. Abstract Ab initio SCF MO calculations at the 3–21G level and the vibrational spectra [Raman and Fourier transform (FT) IR] of liquid-phase 2-chloro- and 3-chlorostyrene are reported. For 2-chlorostyrene, the ab initio calculations predict skew and gauche minima, with an energy…

Vibration wavenumbers of 2-aminobenzotrifluoride in the ground and S1 electronic states from its infrared, Raman and supersonic jet S1-S0 fluorescence spectra. Abstract Raman and infrared spectra of 2-aminobenzotrifluoride, in the liquid phase, and single vibronic level fluorescence (SVLF) spectra, in a supersonic jet, have been recorded and assigned to give an almost complete set of…

Combined Raman and 51V NMR spectroscopic study of Vanadium(V) oligomerization in aqueous alkaline solutions. Abstract The Raman spectra of aqueous vanadium (V) solutions at different pH values, ranging from 13.1 to 7.0, are presented. The dominant bands in the range 700–1100 cm−1 are assigned to the VO symmetrical stretching of the different oligomers, using additional…