Infrared and Raman spectra of CuCl2·2(H,D)2O and K2CuCl4·2(H,D)2O. Vibrational modes, assignment and coupling of the water librations

1987 ◽  
Vol 43 (3) ◽  
pp. 395-400 ◽  
Author(s):  
H. Tanaka ◽  
J. Henning ◽  
H.D. Lutz ◽  
G. Kliche
Keyword(s):  
Raman Spectra ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra

Vibrational Properties of Sodium Substituted β-Tricalcium Phosphate

2007 ◽  
Vol 361-363 ◽  
pp. 75-78 ◽  
Author(s):  
Sophie Quillard ◽  
Laetitia Obadia ◽  
Philippe Deniard ◽  
Bruno Bujoli ◽  
Jean Michel Bouler
Keyword(s):  
Raman Spectra ◽  
Crystalline Structure ◽  
Tricalcium Phosphate ◽  
Vibrational Properties ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra ◽  
Different Types

The infrared and Raman spectra of Na substituted β-TCP are presented for various levels of substitution. The influence of Na content on main vibrational modes appears significant and among them the ν1 symmetric stretching band is very sensitive to PO4 3- tetrahedrons environment. Thus, this mode was particularly investigated and has been decomposed using Lorentzian shapes components. We assigned the calculated components to the different types of PO4 3- tetrahedrons present in the crystalline structure.

Schwingungsspektren der Clusterverbindung Nb6F15/Vibrational Spectrum of the Cluster Compound Nb6F15

1989 ◽  
Vol 44 (1) ◽  
pp. 74-78 ◽  
Author(s):  
G. Kliche ◽  
H. G. von Schnering
Keyword(s):  
Raman Spectrum ◽  
Infrared Spectrum ◽  
Vibrational Spectrum ◽  
Raman Spectra ◽  
Metal Cluster ◽  
Cluster Compound ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Valence Force

Abstract Infrared and Raman spectra of the metal cluster compound [Nb6F12]F3 (cubic Im3̄m; Z = 2) are reported. The three intense m odes observed in the Raman spectrum at 215. 267, and 337 cm-1 and a weak mode observed in the infrared spectrum at 287 cm-1 are assigned to the T2g, Eg, A1g, and T1u vibrational modes of the Nb6 octahedra. The assignment is supported by normal coordinate analysis and Raman measurements at 47 kbar. The valence force constants are f(Nb-Fi) = 2.04, f(Nb-Fa-a) = 1.30 and f(Nb-Nb) = 0.97 N cm-1 metal-to-metal interaction in the cluster.

Internal Vibrations of the Tellurate Group in Compounds Me2(III)Te(VI)O6

1974 ◽  
Vol 29 (3-4) ◽  
pp. 153-155 ◽  
Author(s):  
G. Blasse ◽  
J. G. Kamphorst
Keyword(s):  
Raman Spectra ◽  
Spectral Position ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra ◽  
Quenching Temperature ◽  
Space Group ◽  
Internal Vibrations

The infrared and Raman spectra of LaAlTeOe, LaGaTeO6, In2TeO6 and Y2TeO6 are reported. Structure proposals are confirmed and the space group of Y2TeO6 determined. A relation between spectral position of vibrational modes and quenching temperature of luminescence is outlined.

Infrared and Raman spectra of alkali palmityl sulfates

1984 ◽  
Vol 62 (1) ◽  
pp. 128-132 ◽  
Author(s):  
V. B. Kartha ◽  
L. C. Leitch ◽  
H. H. Mantsch
Keyword(s):  
Raman Spectra ◽  
Acyl Chain ◽  
Head Group ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra ◽  
Sodium Potassium ◽  
Spectral Evidence ◽  
Polymorphic Forms ◽  
Polycrystalline Solids

Lithium, sodium, potassium, cesium, and ammonium palmityl sulfates were prepared by sulfonation of n-hexadecanol, followed by treatment with the corresponding alkali carbonates; selectively deuterated palmityl sulfates were also synthesized to aid the assignment of certain vibrational modes. The infrared and Raman spectra of the polycrystalline solids were interpreted and discussed in terms of acyl chain and head group vibrations. Spectral evidence is presented for the existence of different solid polymorphic forms.

scholarly journals Insights into the infrared and Raman spectra of fresh and lyophilized royal jelly and protein degradation IR spectroscopy study during heating

2015 ◽  
Vol 34 (1) ◽  
pp. 87 ◽  
Author(s):  
Sofija Lazarevska ◽  
Petre Makreski
Keyword(s):  
Raman Spectra ◽  
Royal Jelly ◽  
Chemical Diversity ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra ◽  
Spectroscopy Study ◽  
Mineral Salts ◽  
Complex Product ◽  
Protein Secondary Structures ◽  
Ir And Raman

<p>            In terms of chemical composition, a honeybee secretion known as royal jelly (RJ) is very complex product containing water, proteins, carbohydrates, lipids, mineral salts and small amounts of polyphenols, vitamins and enzymes. Despite its chemical diversity, the bands originating from vibrational modes of the present proteins were successfully assigned in 1800–1200 cm<sup>–1</sup> (Raman and IR) region where the interference of bands from other vibrational species is not substantial. The protein bands were attributed to amide I, amide II and amide III modes and their intensities, additionally, enabled to determine the protein secondary structures. The remaining bands up to 4000 cm<sup>–1</sup> were attributed to other group vibrations whereas the region below 1200 cm<sup>–1 </sup>comprises bands from complex interacting modes within the major RJ components that can not be unequivocally attributed to distinct modes. The work also represents a pioneering effort to collect and interpret the Raman spectrum of fresh and lyophilized RJ samples and to correlate and describe the observed similarities/differences between IR and Raman spectra.</p>

The vibrational spectra of ClF2SbF6, BrF2SbF6, and ClO2SbF6

1970 ◽  
Vol 48 (21) ◽  
pp. 3456-3459 ◽  
Author(s):  
H. A. Carter ◽  
F. Aubke
Keyword(s):  
Strong Coupling ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Vibrational Frequencies ◽  
Vibrational Modes ◽  
Infrared And Raman Spectra

Infrared and Raman spectra of ClF2SbF6, BrF2SbF6, and ClO2SbF6 are reported. Vibrational frequencies for the BrF2+ cation are assigned. In all compounds various degrees of anion–cation interaction are found. The symmetry of the anion is reduced but no internal similarity between the three spectra is recognizable. In addition, strong coupling of vibrational modes for BrF2SbF6 is observed.

Vibration spectra of sulphur tetranitride

1981 ◽  
Vol 46 (11) ◽  
pp. 2613-2619 ◽  
Author(s):  
Jiří Toužín
Keyword(s):  
Solid State ◽  
Raman Spectra ◽  
Normal Coordinate Analysis ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate ◽  
Vibration Spectra

Available data on infrared and Raman spectra of S4N4 in solid state and solutions have been verified and completed. On the basis of normal coordinate analysis an attempt has been made to define with more precision the interpretation of vibration spectra of this compound given in earlier reports.

Vibrational spectra of aquadioxotetra; peroxodivanadates(V) M2[V2O2(O2)4(H2O)]·xH2O (M = N(CH3)4, Cs)

1990 ◽  
Vol 55 (6) ◽  
pp. 1485-1490 ◽  
Author(s):  
Peter Schwendt ◽  
Milan Sýkora
Keyword(s):  
Raman Spectra ◽  
Vibrational Spectra ◽  
Normal Coordinate Analysis ◽  
Force Constants ◽  
Infrared And Raman Spectra ◽  
Empirical Correlations ◽  
Normal Coordinate ◽  
Bond Lengths ◽  
Stretching Vibrations

The infrared and Raman spectra of M2[V2O2(O2)4(H2O)]·xH2O and M2[V2O2(O2)4(D2O)]·xD2O (M = N(CH3)4, Cs) were measured. In the region of the vanadium-oxygen stretching vibrations, the spectra were interpreted based on normal coordinate analysis, employing empirical correlations between the bond lengths and force constants.

Infrared and Raman Spectra, conformations,ab initio calculations and spectral assignments of 1,3-disilabutane (SiH3CH2SiH2CH3)

2007 ◽  
Vol 38 (9) ◽  
pp. 1159-1173 ◽  
Author(s):  
Gamil A. Guirgis ◽  
Paul M. Mazzone ◽  
Daniel N. Pasko ◽  
Peter Klaeboe ◽  
Anne Horn ◽  
...  
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Raman Spectra ◽  
Infrared And Raman Spectra
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