Journal ArticleDOI
Variable Temperature Sample Holder for Raman Spectroscopy
Foil A. Miller,Brian M. Harney +1 more
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In this article, a sample holder for laser Raman spectroscopy of liquids and powders at any temperature between −196° and +200°C was described, which was designed for the Spex Ramalog system, which uses 90° viewing.Abstract:
This note describes a simple, convenient sample holder for laser Raman spectroscopy of liquids and powders at any temperature between −196° and +200°C. It was designed for the Spex Ramalog system, which uses 90° viewing. With this system a liquid or powdered sample is contained in a thinwalled melting point tube which is oriented crosswise to the slit, i.e., parallel to the plane of the slit jaws and perpendicular to the long axis of the slit.1 The laser beam impinges on the sample vertically, and the tattered radiation is viewed horizontally.read more
Citations
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Vibrational spectra of monothiocarbamates-II. IR and Raman spectra, vibrational assignment, conformational analysis and ab initio calculations of S-methyl-N, N-dimethylthiocarbamate
TL;DR: In this article, a vibrational assignment for the -d0 molecule is facilitated by the availability of spectral data for five different isotopomers, including S-methyl-N, N-dimefhylthiocarbamate, (CH3)2NC(O)SCH3, and its isotopomer, S-d3, n-d6 and N -d9, for the gas and liquid.
Journal ArticleDOI
Spectroscopic Study of Aqueous H2SO4 at Different Temperatures and Compositions: Variations in Dissociation and Optical Properties
TL;DR: The ionic speciation and the optical properties of aqueous H2SO4 have been investigated as a function of temperature and acid concentration by spectroscopic techniques as discussed by the authors.
Journal ArticleDOI
Vibrational Assignment of Torsional Normal Modes of Rhodopsin: Probing Excited-State Isomerization Dynamics along the Reactive C11C12 Torsion Coordinate
Steven Lin,Michel Groesbeek,Ineke van der Hoef,Peter J. E. Verdegem,and Johan Lugtenburg,Richard A. Mathies +5 more
TL;DR: The resonance Raman spectrum of the 11-cis retinal protonated Schiff base chromophore in rhodopsin exhibits low-frequency normal modes at 93, 131, 246, 260, 320, 446, and 568 cm-1 as mentioned in this paper.
Journal ArticleDOI
Spectra and structure of silicon‐containing compounds. XXXVI—Raman and infrared spectra, conformational stability, ab initio calculations and vibrational assignment of ethyldibromosilane
Gamil A. Guirgis,Peter Klaboe,Shiyu Shen,D. L. Powell,Alytis Gruodis,Valdemaras Aleksa,Claus J. Nielsen,Jing Tao,Chao Zheng,James R. Durig +9 more
TL;DR: In this article, the Raman spectrum of liquid ethyldibromosilane, CH3CH2SiHBr2, was recorded at various temperatures between 298 and 218 K, and the spectrum of the crystal was obtained at 210 K from a sample sealed in a capillary.
Journal ArticleDOI
Conformational study of ketoprofen by combined DFT calculations and Raman spectroscopy.
TL;DR: A conformational study of ketoprofen was carried out by both density functional theory (DFT) calculations and Raman spectroscopy, finding nine different geometries found to correspond to energy minimum conformations but only one of them was experimentally detected in the condensed phase spectra.
References
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Journal ArticleDOI
Small-sample handling in laser Raman spectrometry
Journal ArticleDOI
The 2699 Å Electronic Band System of Chlorobenzene—The In-Plane Vibrational Modes in the Excited State
TL;DR: In this article, the vibrational assignment of the totally symmetric a1 and nontotally symmetric b2 fundamentals of the molecule in its first singlet excited state, eB2, based primarily on the identification of Ae and Be-type band contours from the high resolution electronic spectrum was reported.