THE RAMAN SPECTRA OF DEUTERATED METHYL LAURATES AND RELATED COMPOUNDS

1964 ◽  
Vol 42 (2) ◽  
pp. 305-325 ◽  
Author(s):  
R. Norman Jones ◽  
R. A. Ripley
Keyword(s):  
Raman Spectrum ◽  
Liquid Phase ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Minor Effect ◽  
Absorption Bands ◽  
Methyl Group ◽  
A Minor ◽  
Related Compounds ◽  
Methylene Group

The Raman spectra of methyl laurate and five derivatives selectively deuterated in the terminal methyl group, the α-methylene group, and the carbomethoxy group have been examined in the liquid phase. Raman spectra of n-dodecane and n-dodecane-1,12-d6 have also been determined. The spectra are compared with the infrared spectra, which have been reported previously, and are analyzed in terms of current views on the vibrations of compounds containing polymethylene chains.Whereas the infrared spectra of the esters are dominated by absorption bands associated with the carbomethoxy group, this group has only a minor effect on the Raman spectrum; the implications of this in organic structural analysis are discussed.

The raman spectra of some aromatic sulphonyl Halides

1953 ◽  
Vol 6 (2) ◽  
pp. 135 ◽  
Author(s):  
NS Ham ◽  
AN Hambly
Keyword(s):  
Raman Spectrum ◽  
Raman Spectra ◽  
Raman Band ◽  
Absorption Bands ◽  
Strong Band ◽  
Liquid Benzene ◽  
Infra Red ◽  
Group A ◽  
Methyl Benzene ◽  
Sulphonyl Fluoride

The Raman spectra of benzene-, p-chlorobenzene-, p-bromobenzene-, p-methoxybenzene-, and o-, m-, and p-toluene sulphonyl chlorides and fluorides and methylbenzene sulphonate are recorded as well as the infra-red absorption bands of liquid benzene sulphonyl chloride and fluoride between 650 and 3100 cm.-l. A frequency c. 375 cm.-1 is characteristic of the S-Cl bond in sulphonyl chlorides and a strong band at c. 1210 cm.-1 is characteristic of the sulphonyl fluoride group. A Raman band at c. 1080 cm.-l in the chlorides and c. 1095 cm.-l in the fluorides appears to be associated with aromatic sulphonyl derivatives. There is such a band at 1094 cm.-1 in the Raman spectrum of methyl benzene sulphonate.

The Infrared and Raman Spectra of α- and β-Pinenes

1976 ◽  
Vol 30 (2) ◽  
pp. 209-212 ◽  
Author(s):  
H. William Wilson
Keyword(s):  
Liquid Phase ◽  
Raman Spectra ◽  
Vapor Phase ◽  
Infrared Spectra ◽  
Infrared And Raman Spectra

The liquid phase infrared and Raman spectra of α-pinene (2,6,6-trimethyl bicyclo[3.1.1] hept-2-ene) and β-pinene (6,6-dimethyl-2-methylene bicyclo [3.1.1] heptane) have been scanned between 100 and 4000 cm−1 and the vapor phase infrared spectra of both compounds between 625 and 4000 cm−1. A number of the 72 allowed modes of the C10H16 isomers can be assigned on the basis of group frequencies.

Vibrational Spectra and Normal Coordinate Analysis of Disulfuryl Difluoride S2O5F2 and Diselenonyl Difluoride Se2O5F2

1993 ◽  
Vol 58 (3) ◽  
pp. 517-529 ◽  
Author(s):  
Jiří Toužín ◽  
Miloš Černík
Keyword(s):  
Raman Spectrum ◽  
Force Field ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Room Temperature ◽  
Normal Coordinate Analysis ◽  
Normal Coordinate ◽  
Valence Force Field ◽  
Overlapping Bands

Raman spectra (1 600 - 100 cm-1) of liquid S2O5F2 and Se2O5F2 and infrared spectra of liquid and gaseous S2O5F2 were measured. A modified general valence force field was used for their interpretation by normal coordinate analysis. Refinement of the number of lines in the Raman spectrum of S2O5F2 by means of numerical separation of the overlapping bands led to the conclusion that liquid S2O5F2 consists at least of three rotamers at room temperature.

POTASSIUM DERIVATIVES OF FLUORENE AS INTERMEDIATES IN THE PREPARATION OF C9-SUBSTITUTED FLUORENES: I. THE PREPARATION OF 9-FLUORENYL POTASSIUM AND THE INFRARED SPECTRA OF FLUORENE AND SOME C9-SUBSTITUTED FLUORENES

1960 ◽  
Vol 38 (5) ◽  
pp. 697-711 ◽  
Author(s):  
G. W. H. Scherf ◽  
R. K. Brown
Keyword(s):  
Infrared Spectra ◽  
Organometallic Compounds ◽  
Absorption Bands ◽  
Derivatives Of ◽  
Methylene Group

9-Fluorenylpotassium and 9,9-fluorenyldipotassium have been prepared from the reaction of potassium metal with fluorene in dioxane. These organometallic compounds upon reaction with alkyl and aralkyl halides gave 9-substituted fluorenes.Six different absorption bands in the spectrum of fluorene could be associated with the methylene group: 2930, 1400, 1298, 952, and 692 cm−1. Evidence for this assignment was obtained from deuteration of the organometallic compounds of fluorene and from 9-substituted fluorenes.

Identification of ν(N=N) in Metal Arylazo Complexes: The Infrared and Raman Spectra of some Arylazo Complexes of Rhodium(III)

1971 ◽  
Vol 49 (24) ◽  
pp. 3994-3996 ◽  
Author(s):  
G. W. Rayner-Canham ◽  
D. Sutton
Keyword(s):  
Raman Spectrum ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Isotopic Substitution ◽  
Infrared And Raman Spectra ◽  
Metal Ligand

The Raman and infrared spectra have been obtained for a series of rhodium-arylazo complexes RhCl2(PPh3)2(p-XC6H4N2) where X = H, F, Br, CF3, NO2, OCH3, NEt2. The N=N stretching frequency ν(N=N) has been unambiguously identified from its strong appearance in the Raman spectrum and from isotopic substitution studies using 15N. Trends in the value of ν(N=N) with the p-substituent X are discussed, in terms of the apparent degree of metal–ligand π-interaction.

Infrared Studies of Chlorinated Dibenzo-p-dioxins and Structurally Related Compounds

1973 ◽  
Vol 56 (4) ◽  
pp. 962-975
Author(s):  
Jo-Yun T Chen
Keyword(s):  
Infrared Spectra ◽  
Electronic Effects ◽  
Absorption Bands ◽  
Characteristic Frequencies ◽  
Infrared Studies ◽  
Bond Strengths ◽  
Related Compounds ◽  
Correlation Tables

Abstract Reference infrared spectra of 24 chlorinated dibenzo-p-dioxins (DPD) and structurally related compounds are presented. These reference spectra are recorded using micro quantities of synthesized compounds in order to obtain spectra like those expected from chlorinated DPD residue isolates. The observed characteristic frequencies are tabulated in correlation tables. Their significance is interpreted in terms of the substituents and electronic effects. The positions of various absorption bands depend on the total number and positions of the chlorine substituents. The positions of the absorption bands indicate relative bond strengths.

Infrared and Raman spectra and vibrational assignment of methylene cyclopropane-h6 and -d6

1970 ◽  
Vol 48 (24) ◽  
pp. 3889-3902 ◽  
Author(s):  
J. E. Bertie ◽  
M. G. Norton
Keyword(s):  
Liquid Phase ◽  
Gas Phase ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Isotope Shifts ◽  
Liquid Phases ◽  
Modes Of Vibration ◽  
Depolarization Ratios

Infrared spectra have been recorded in the range 4000 to 20 cm−1 for methylene cyclopropane-h6 and -d6 in the gas phase, and from 4000 to 200 cm−1 for methylene cyclopropane-h6 in the liquid phase. Raman spectra have been recorded for the liquid phases of both species. The fundamental modes of vibration have been assigned using i.r. band contours and Raman depolarization ratios, with the exception of the i.r. inactive A2 modes which were not observed. An interesting feature is the occurrence of remarkably small isotope shifts for certain modes.

Vibrational spectra of mercury(II) and methylmercury(II) thiocyanates

1969 ◽  
Vol 22 (10) ◽  
pp. 2117 ◽  
Author(s):  
RPJ Cooney ◽  
JR Hall
Keyword(s):  
Raman Spectrum ◽  
Solid State ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Unit Cell ◽  
Infrared And Raman Spectra

The Raman spectra of Hg(SCN)2 in both the solid state and in solution have been recorded and interpreted in conjunction with the infrared spectra. For the solid state the Raman shifts for Hg-S stretching, S-C stretching, and C-N stretching are 270, 721, and 2112 cm-1 respectively. In diglyme solution the corresponding values are 278, 692, and 2139 cm- 1. The infrared and Raman spectra of CH3HgSCN in the solid state do not contain any coincidences which may indicate that the unit cell is centrosymmetric. The Raman spectrum of CH3HgSCN in CH3OH solution shows strong, sharp, polarized lines at 283, 540, 1186, and 2138 cm-1 which are attributed to Hg-S stretching, Hg-C stretching, CH3 deformation, and C-N stretching modes respectively.

Sign in / Sign up

Export Citation Format

Share Document