Showing papers on "Infrared spectroscopy correlation table published in 1973"
98 citations
TL;DR: In this article, a Michelson interferometer for amplitude and phase Fourier spectroscopy in the infrared is described, which allows the determination of the optical constants n and k of relatively small crystal samples at high resolution and low temperatures.
43 citations
TL;DR: In this article, divalent metal-aminobenzoic acid coordination compounds were prepared in aqueous solutions and their thermal analyses, magnetic moments, and infrared spectra were investigated.
Abstract: Several divalent metal-aminobenzoic acid coordination compounds were prepared in aqueous solutions and their thermal analyses, magnetic moments, and infrared spectra were investigated. These coordination compounds have the structure of ML2 or ML2·nH2O and are coordinated with amino and carboxyl groups of the ligand. Metal-o-aminobenzoic acid chelates give approximately the same infrared spectra but metal-m- and p-aminobenzoic acid coordination compounds are classified into two groups by their infrared spectra. Detailed assignments for the infrared absorption bands of the metal-coordination compounds have been made by a comparison of the spectra with those of the ligand and its related compounds.
31 citations
TL;DR: In this paper, the reflectance of polycristalline β-Ag2S at 4.2, 62, 300 and 473 K was analyzed and compared with the predictions of the Drude theory.
15 citations
11 citations
11 citations
TL;DR: In this paper, the far infrared absorption spectrum of α-helical poly-L-alanine was measured between 4 and 200 cm −1, and two predicted infrared active longitudinal acoustic modes of the αhelix were not observed, and this result was explained in terms of intermolecular interactions.
10 citations
TL;DR: In this paper, the infrared properties of aromatic Noxides and their correlations with other structural properties have been investigated in some details in monocyclic compounds, especially pyridine-Noxides.
Abstract: The infrared characteristics of aromatic-N-oxides and their correlations with other structural properties have been investigated in some details in monocyclic compounds, especially pyridine-N-oxides. However the amount of infrared observational data available in more complex systems is rather limited and its interpretation still mostly tentative (1).
9 citations
8 citations
TL;DR: For some years now, a number of research laboratories have been interested in obtaining the far infrared spectra of matrix-isolated molecules as mentioned in this paper, which can be critical in the determination of the molecular structure and consequently the accuracy of thermodynamic functions which are determined.
Abstract: For some years now, a number of research laboratories have been interested in obtaining the far infrared spectra of matrix-isolated molecules. High temperature chemists, for example, have been concerned with observing low frequency vibrational motions of a variety of species generated from Knudsen ovens. The observation of these low frequency (bending) modes can be critical in the determination of the molecular structure and consequently the accuracy of thermodynamic functions which are determined. This application has been the subject of a recent review. Other areas of interest requiring the use of far infrared techniques include the study of the pure rotational spectra of matrix-isolated hydrogen halides, the study of impurity-induced lattice modes in molecular crystals, and the study of transition metal halides.
7 citations
TL;DR: In this article, band splitting can be observed in the infrared spectra of metal complexes arising from the naturally occurring mixture of isotopes, and the use of these splittings in assigning metal-ligand vibrational modes is described.
Abstract: Band splitting can be observed in the infrared spectra of metal complexes arising from the naturally occurring mixture of isotopes, and the use of these splittings in assigning metal-ligand vibrational modes is described
TL;DR: In this paper, the infrared spectra of the polyamines were studied on a UR-20 spectrometer in the frequency range 400-4000 cm -i, and the secondary amine group was revealed in the infrared spectrum of diethylamine by the corresponding bands due to the stretching and bending (1650 era -I) vibrations of the N-H bonds.
Abstract: The infrared spectraof the polyamines were studied on a UR-20 spectrometer in the frequency range 400-4000 cm -i. We recorded the spectra of the substances in their natural liquid state in K]3r cells (the low-molecular amines were studied at a fixed cell thickness of 0.028 ram, and the high-molecular amines were studied in the form of thin films). To detect the effect of intermoleeular interaction, we also recorded the infrared spectra of the solutions in carbon tetraehloride. The data for the solutions, and the physieochemieal characteristics of the polyethylenepolyamines studied, were given in [2]. Figures 1 and 2 give the infrared spectra of the two model compounds diethylamine andtriethylamine, and of technical fractions of polyethylenepolyamine homologs from the mono- to the tetra-derivative. The secondary amine group is revealed in the infrared spectrum of diethylamine by the corresponding bands due to the stretching (3287 and 3380 cm -i) and bending (1650 era -I) vibrations of the N-H bonds. The spectrum of diethylamine is also characterized by an intense band at 1143 cm -i, corresponding to the C-N-C group.