Journal ArticleDOI
Raman studies of reorientational relaxation of cyclohexane in the liquid state
TLDR
In this article, the effects of rotational-vibrational coupling were discussed and the most reliable results were obtained from the ν4 vibration and indicated that reorientational relaxation occurs close to the Debye limit.Abstract:
Reorientational correlation functions have been obtained from the analysis of the totally symmetric vibrations ν4, ν5 and ν2 of liquid cyclohexane. For the interpretation of the data, the Kubo line shape theory was assumed to be valid. The most reliable results were obtained from the ν4 vibration and indicated that reorientational relaxation occurs close to the Debye limit of rotational diffusion. The data are compared with NMR results given in the literature. The effects of rotational-vibrational coupling are discussed.read more
Citations
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Dependence of line shapes in femtosecond broadband stimulated Raman spectroscopy on pump-probe time delay.
TL;DR: The theoretical description and simulation are consistent with the observed Raman gain intensity profile over time delay, reaching the maximum at a slightly negative time delay (approximately -1 ps), and show that the coupled wave theory is a good model for describing FSRS.
Journal ArticleDOI
Picosecond dynamics and microheterogenity of water+dioxane mixtures.
TL;DR: Epsilon(nu) could be fitted by a collision induced oscillator at high frequencies plus two Debye relaxations in the microwave region to study the fast dynamics of dilute water+1,4-dioxane, suggesting a microheterogeneous structure of the mixtures even at low water content.
Journal ArticleDOI
Raman scattering and vibrational relaxation studies of N, N‐dimethylformamide
Anusree Purkayastha,Kamal Kumar +1 more
TL;DR: In this article, the Raman band of the amide I vibrational mode of N, N-dimethylformamide was studied in the neat liquid and as a function of solvent concentration.
Journal ArticleDOI
Molecular dynamics simulation of liquid-solid phase transition of cyclohexane. I
A. Brodka,T. W. Zerda +1 more
TL;DR: In this article, the potential parameters have been adjusted to fit cyclohexane properties along the saturated vapor pressure curve, and the behavior of cycloxide molecules in the bulk liquid and in the plastic crystal state is studied.
Journal ArticleDOI
Laser Raman scattering studies of vibrational relaxation and noncoincidence effect in liquid cyclohexanone
Anusree Purkayastha,Kamal Kumar +1 more
TL;DR: In this paper, the vibrational relaxation and non-coincidence effect in liquid cyclohexanone have been studied and explained in terms of molecular attraction parameters and van der Waals interactions.
References
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Journal ArticleDOI
Spin Relaxation Processes in a Two‐Proton System Undergoing Anisotropic Reorientation
TL;DR: In this paper, the spin-lattice relaxation time and spin-spin relaxation time for two identical spins I=½ have been calculated for anisotropic reorientation in which the spin pair reorients randomly about an axis which, in turn, tumbles randomly.
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Molecular Motion in Infrared and Raman Spectra
TL;DR: In this article, the Fourier transformation of infrared and Raman band shapes reveals the meaning of the spectrum in terms of molecular rotation much more clearly than does the usual frequency shape.
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Raman Scattering: Orientational Motions in Liquids
TL;DR: In this paper, a systematic study of reorientational motions by Raman scattering is undertaken for 10 liquids and the theory of orientational broadening of Raman lines is presented with emphasis on the use of symmetry of molecular vibrations to obtain information of reoriented motions about different axes.
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Analysis of Orientational Broadening of Raman Line Shapes
TL;DR: In this paper, a systematic investigation of orientational broadening of Raman vibrational lines is undertaken and measurements of line shapes are made for 19 liquids and a method of analysis is presented.
Journal ArticleDOI
Relations between Raman Spectroscopy and Nuclear Spin Relaxation
TL;DR: Raman spectra and nuclear spin relaxation experiments are both affected by molecular rotation, and the information about molecular reorientation furnished by these experiments is related under certain assumptions, most important of which are the following: (1) the substance is a molecular liquid or gas, and (2) the molecules have either linear, symmetric top, or spherical top symmetry as discussed by the authors.