An infrared and Raman spectroscopic study of some Group 1B halide complexes containing an M4X4 core

1978 ◽  
Vol 31 (10) ◽  
pp. 2137 ◽  
Author(s):  
GA Bowmaker ◽  
RJ Knappstein ◽  
SF Tham
Keyword(s):  
Raman Spectra ◽  
Broad Band ◽  
Low Frequency ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Intense Band ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Halide Complexes ◽  
Far Infrared Spectra

The infrared and Raman spectra of [Et3PcuI]4 and [Et3AsCuI]4 have been measured, and bands have been assigned to vibrations of the ligand and of the Td Cu4I4 core. The far-infrared spectra show two strong T2 v(CuI) bands at about 90 and 140 cm-1, the higher frequency member of which has a Raman counterpart which shows possible longitudinal-transverse splitting. The Raman spectra also show an intense band at about 50 cm-1. Similar features have been observed in the low-frequency vibrational spectra of [Et2S]3 [CuI]4, [C5H5NcuI]4, [C5H11NAgI]4, [Et3PAgBr]4 and [Et3PagCl]4, although the last two compounds gave only a single broad band in the v(MX) region.

Far-Infrared and Raman Spectra of Ammonium Fluoride and Ammonium Fluoride—d4

1970 ◽  
Vol 24 (1) ◽  
pp. 16-20 ◽  
Author(s):  
J. R. Durig ◽  
D. J. Antion
Keyword(s):  
Thin Films ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
Ammonium Fluoride ◽  
Isotopic Shift ◽  
Lattice Vibrations ◽  
Infrared And Raman Spectra ◽  
Far Infrared Spectra

The far-infrared spectra of thin films of NH4F and ND4F and the Raman spectra of polycrystalline samples of both compounds have been recorded at −170°C. Two low-frequency lattice vibrations were observed in each spectrum and these have been assigned as optical translations on the basis of their isotopic shift factors. Librational modes were not observed in any of the spectra.

The Preparation and Low-Frequency Vibrational Spectra of Some Copper(I) and Silver(I) Alkane- and Arene-monothiolate Complexes

1979 ◽  
Vol 32 (7) ◽  
pp. 1443 ◽  
Author(s):  
GA Bowmaker ◽  
L Tan
Keyword(s):  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
New Methods ◽  
Thiolate Complexes ◽  
New Compounds ◽  
First Time ◽  
Far Infrared Spectra

A number of different methods for preparing anionic Group 1B metal thiolate complexes have been investigated. The compounds [Me4N] [CU2(SMe)3] and [Et4N] [Ag5(SBut)6] are reported for the first time, and new methods for preparing the previously known compounds [Et4N] [Cu5(SBut)6], [Me4N]2 [CU5(SPh)7] and [Et4N]2 [Cu5(SPh)7] are described. The far-infrared spectra of the above compounds, and of CuSMe, CuSBut, AgSBut, [Me4N]2 [CU4(SPh)6] and [Me4N]2 [Ag5(SPh)7] have been obtained, and metal-sulfur stretching bands are assigned in the 150-350 cm-1 region. The low-frequency Raman spectra have also been obtained for some of these compounds. Possible structures for the new compounds are considered in the light of the low-frequency vibrational spectra.

Low-Frequency Vibrations ofall-trans-Retinal:  Far-Infrared and Raman Spectra and Density Functional Calculations

1998 ◽  
Vol 102 (12) ◽  
pp. 2131-2136 ◽  
Author(s):  
Francesco Luigi Gervasio ◽  
Gianni Cardini ◽  
Pier Remigio Salvi ◽  
Vincenzo Schettino
Keyword(s):  
Raman Spectra ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Low Frequency ◽  
Far Infrared ◽  
Infrared And Raman Spectra

Far-infrared and Raman Spectra of Crystalline ICN

1971 ◽  
Vol 49 (14) ◽  
pp. 2459-2462 ◽  
Author(s):  
R. Savoie ◽  
M. Pézolet
Keyword(s):  
Raman Spectra ◽  
Infrared Spectra ◽  
High Frequency ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Infrared Band ◽  
Longitudinal Modes ◽  
Intensity Measurements ◽  
Cyanogen Iodide ◽  
Far Infrared Spectra

The Raman and far-infrared spectra of crystalline cyanogen iodide have been recorded. High-frequency shoulders alongside the Raman bands confirm the piezoelectric nature of this solid and allow an estimate to be made of the frequencies of the longitudinal modes associated to the fundamental vibrations. Dipole derivatives calculated from these frequencies agree qualitatively with those obtained from infrared band intensity measurements.

Low frequency vibrational spectra of lithium formate monohydrate and its aqueous solutions

1983 ◽  
Vol 61 (10) ◽  
pp. 2282-2284 ◽  
Author(s):  
A. Agarwal ◽  
D. P. Khandelwal ◽  
H. D. Bist
Keyword(s):  
Aqueous Solutions ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Tetrahedral Structure ◽  
Structure Of Water ◽  
Lithium Formate ◽  
Lithium Formate Monohydrate

The far infrared and Raman spectra of polyerystalline lithium formate monohydrate and the Rayleigh wing scattering of its aqueous solutions are reported. Three new bands in solid and bands due to librations of HCOO− and the quasi-tetrahedral structure of water in solutions have been identified.

Far-infrared and Raman spectra of the low frequency region in Hofmann-Td type clathrates

1997 ◽  
Vol 408-409 ◽  
pp. 435-438 ◽  
Author(s):  
Liljana Andreeva ◽  
Biljana Minceva-Sukarova
Keyword(s):  
Raman Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
Frequency Region ◽  
Infrared And Raman Spectra

The Infrared and Raman Spectra of Powdered and Single-Crystal Barium Chlorate Monohydrate and -deuterate

1973 ◽  
Vol 51 (14) ◽  
pp. 2275-2289 ◽  
Author(s):  
John E. Bertie ◽  
Anton M. Heyns ◽  
Oscar Oehler
Keyword(s):  
Water Vapor ◽  
Single Crystal ◽  
Raman Spectra ◽  
Far Infrared ◽  
Interaction Constant ◽  
Water Molecules ◽  
Infrared And Raman Spectra ◽  
Harmonic Force ◽  
Bending Modes ◽  
Far Infrared Spectra

The infrared and Raman spectra of polycrystalline and single-crystal Ba(ClO3)2•H2O and Ba(ClO3)2•D2O have been obtained. The observed bands have been assigned to the various Davydov components of the intramolecular modes and colattice modes. For the water molecule, all of the fundamentals of H2O, HDO, and D2O have been located, the anharmonicities of the bending modes have been determined, and those of the stretching modes are essentially the same as for water vapor. The intermolecular coupling is very weak. The effective harmonic force field for the water molecules has been calculated. The stretch–stretch interaction constant is much smaller than for water vapor, reflecting a smaller separation of the asymmetric and symmetric stretching modes. The intermolecular vibrations of the water molecules have been located. For the chlorate ions, in spite of the disorder due to the 37Cl, the spectra can be interpreted in terms of unit cell modes, albeit as a first approximation. The isotope shift of the symmetric Cl—O stretching mode appears to be unusually large. The far-infrared spectra have been tentatively assigned to translational and rotational vibrations involving the Ba2+ and ClO3− ions.

Far infrared and Raman spectra of gaseous carbon suboxide and the potential function for the low frequency bending mode

1973 ◽  
Vol 59 (3) ◽  
pp. 1028-1037 ◽  
Author(s):  
L. A. Carreira ◽  
R. O. Carter ◽  
J. R. Durig ◽  
R. C. Lord ◽  
C. C. Milionis
Keyword(s):  
Potential Function ◽  
Raman Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Carbon Suboxide ◽  
Bending Mode

ChemInform Abstract: FAR INFRARED AND RAMAN SPECTRA OF GASEOUS CARBON SUBOXIDE AND THE POTENTIAL FUNCTION FOR THE LOW FREQUENCY BENDING NODE

1973 ◽  
Vol 4 (49) ◽  
pp. no-no
Author(s):  
L. A. CARREIRA ◽  
R. O. CARTER ◽  
J. R. DURIG ◽  
R. C. LORD ◽  
C. C. MILIONIS
Keyword(s):  
Potential Function ◽  
Raman Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
Infrared And Raman Spectra ◽  
Carbon Suboxide

scholarly journals Hydrogen Bonds: Raman Spectroscopic Study

2021 ◽  
Vol 22 (10) ◽  
pp. 5380
Author(s):  
Boris A. Kolesov
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Spectroscopic Study ◽  
Raman Spectra ◽  
Temperature Region ◽  
Vibrational Frequency ◽  
Chemical Compounds ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Proton Dynamics

The work outlines general ideas on how the frequency and the intensity of proton vibrations of X–H×××Y hydrogen bonding are formed as the bond evolves from weak to maximally strong bonding. For this purpose, the Raman spectra of different chemical compounds with moderate, strong, and extremely strong hydrogen bonds were obtained in the temperature region of 5 K–300 K. The dependence of the proton vibrational frequency is schematically presented as a function of the rigidity of O-H×××O bonding. The problems of proton dynamics on tautomeric O–H···O bonds are considered. A brief description of the N–H···O and C–H···Y hydrogen bonds is given.

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