The Raman spectra of tricoordinate CdX2Y− halogenocadmate(II) anions in the solid state

1976 ◽  
Vol 54 (23) ◽  
pp. 3641-3645 ◽  
Author(s):  
J. Guillermo Contreras ◽  
Dennis G. Tuck
Keyword(s):  
Solid State ◽  
Raman Spectra ◽  
Force Constants ◽  
Anionic Complexes ◽  
State Force

Anionic complexes of cadmium, of the type [CdX2Y]−, where X and Y are chlorine, bromine or iodine, have been prepared as the tetra-n-propylammonium salts. Raman spectra have been recorded, and serve to establish that these anions have C2v symmetry in the solid state. Force constants calculated on the Urey–Bradley approximation are correlated with previously reported results for CdX3− species.

The Raman Spectra of some Tricoordinate Halogenocadmate(II) Anions in the Solid State

1975 ◽  
Vol 53 (22) ◽  
pp. 3487-3491 ◽  
Author(s):  
J. Guillermo Contreras ◽  
Dennis G. Tuck
Keyword(s):  
Solid State ◽  
Raman Spectra ◽  
Force Constants ◽  
State Force

The Raman spectra of the solids n-Pr4N[CdX3], where X is Cl, Br, or I, show that trihalogenocadmate anions possess C2v symmetry in the solid state. Force constants have been calculated using the Urey–Bradley approximation and are correlated with the values reported for other tricoordinate species.

Raman spectra of mercury(I) and mercury(II) iodides in the solid state

1968 ◽  
Vol 21 (9) ◽  
pp. 2145 ◽  
Author(s):  
RPJ Cooney ◽  
JR Hall ◽  
MA Hooper
Keyword(s):  
Raman Spectrum ◽  
Solid State ◽  
Raman Spectra ◽  
Factor Group ◽  
Force Constants ◽  
Unit Cells

The Raman spectrum of yellow Hg2I2 contains features at 110 and 192 cm-l assignable to Hg-Hg stretching and Hg-1 stretching respectively. The spectrum of yellow HgI2 at c. 150� shows bands at 33 cm-1 (I-Hg-1 bending) and 133 cm-1 (Hg-I stretching). The Raman shifts for red HgI2 are 24, 111, and 137 cm-l, attributable to I-Hg-1 bending, symmetric and asymmetric Hg-1 stretching respectively. Assignments are made on the basis of factor group analyses on the Bravais unit cells. Some force constants are calculated.

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.

RAMAN SPECTRA OF TITANIUM DI-, TRI-, AND TETRA-CHLORIDES

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3865-3868 ◽  
Author(s):  
H. MIYAOKA ◽  
T. KUZE ◽  
H. SANO ◽  
H. MORI ◽  
G. MIZUTANI ◽  
...  
Keyword(s):  
Force Constant ◽  
Raman Spectra ◽  
Normal Mode ◽  
Raman Band ◽  
Normal Mode Analysis ◽  
Force Constants ◽  
Mode Analysis ◽  
Oxidation Number

We have obtained the Raman spectra of TiCl n (n= 2, 3, and 4). Assignments of the observed Raman bands were made by a normal mode analysis. The force constants were determined from the observed Raman band frequencies. We have found that the Ti-Cl stretching force constant increases as the oxidation number of the Ti species increases.

Schwingungsspektren und Kraftkonstanten der Hexacyano-Komplexe des Mangan(I), Technetium(I) und Rhenium(I) / Vibrational Spectra and Force Constants of the Hexacyano Complexes of Mangan(l), Technicium(I) and Rhenium(l)

1972 ◽  
Vol 27 (8-9) ◽  
pp. 1193-1196 ◽  
Author(s):  
W. Krasser ◽  
K. Schwochau
Keyword(s):  
Force Field ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Point Group ◽  
Force Constants ◽  
Irreducible Representations ◽  
Infrared And Raman Spectra ◽  
Valence Force ◽  
Valence Force Field ◽  
Complex Salts

The infrared and Raman spectra of the complex salts K5[Mn(CN)6], K5[Tc(CN)6] and K5[Re(CN)s] have been recorded in the range from 4000 to 40 cm-1. All expected fundamental vibrations have been observed and could be assigned to the irreducible representations of the sym­metry point group Oh . The calculation of the force constants is based on the concept of the generalized valence force field. The low CN-valence force constants indicate the relatively strong Π-bonding character of the metal carbon bond, which is especially pronounced for K5[Tc(CN)6).

Raman spectra and force constants for Cl3+(SbF6)−

1991 ◽  
Vol 47 (12) ◽  
pp. 1673-1676 ◽  
Author(s):  
R. Minkwitz ◽  
J. Nowicki ◽  
H. Härtner ◽  
W. Sawodny
Keyword(s):  
Raman Spectra ◽  
Force Constants

The Vibrational Spectrum and Urey-Bradley Force Constants of the Trifluoromethyltrifluoroborate(1-) Anion

1973 ◽  
Vol 27 (3) ◽  
pp. 209-213 ◽  
Author(s):  
John F. Jackovitz ◽  
Charles E. Falletta ◽  
James C. Carter
Keyword(s):  
Potential Energy ◽  
Vibrational Spectrum ◽  
Energy Distribution ◽  
Force Field ◽  
Raman Spectra ◽  
Normal Modes ◽  
Force Constants ◽  
Potential Energy Distribution ◽  
Infrared And Raman Spectra ◽  
Normal Coordinate

Infrared and Raman spectra for (K+) (CF3BF3−) have been obtained from 4000 to 50 cm−1. Spectral assignments were made on the basis of C3v symmetry using both 10B and 11B compounds. In addition, a normal coordinate analysis was performed to obtain the potential energy distribution of the normal modes. A Urey-Bradley type force field was used, and force constants obtained for the CF3 and BF3 groupings were compared to those in C2F6 and BF4−.

Co-C force constants from resonance Raman spectra of alkylcobalamins: insensitivity to dimethylbenzylimidazole coordination

1998 ◽  
Vol 270 (1-2) ◽  
pp. 392-398 ◽  
Author(s):  
Shoulian Dong ◽  
Raghavakaimal Padmakumar ◽  
Ruma Banerjee ◽  
Thomas G. Spiro
Keyword(s):  
Raman Spectra ◽  
Resonance Raman ◽  
Force Constants ◽  
Resonance Raman Spectra

Low frequency infrared and Raman spectra of the N,N,N′,N′-tetramethyl-ethylenediamine adducts of the Group IIb dihalides

1970 ◽  
Vol 48 (1) ◽  
pp. 181-184 ◽  
Author(s):  
M. H. Abraham ◽  
F. W. Parrett
Keyword(s):  
Solid State ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Low Frequency ◽  
Infrared And Raman Spectra ◽  
Cadmium Complexes ◽  
Mercury Complexes ◽  
Vibrational Bands

A study of the low frequency vibrational spectra of the complexes MX2.TMED (where M = Zn, Cd, Hg; X = Cl, Br, I; TMED = N,N,N′,N′-tetramethylethylenediamine suggests that in the solid state the zinc and mercury complexes are 4-coordinated but the cadmium complexes are all based on octahedral halogen bridged structures. Assignments of the vibrational bands are discussed.

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