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.

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.

Infrared Spectra of Some Chloro Derivatives of s-Triazine

1966 ◽  
Vol 20 (3) ◽  
pp. 159-160 ◽  
Author(s):  
T. S. Herman
Keyword(s):  
Infrared Spectra ◽  
Triazine Ring ◽  
Chlorine Atoms ◽  
Vibrational Assignments ◽  
Fundamental Frequencies ◽  
Bending Mode ◽  
Chloro Derivatives ◽  
Derivatives Of

The effects of chlorine atoms on the fundamental frequencies of the s-triazine ring are discussed and the vibrational assignments in the region 1600–700 cm−1 are extended. The variation in the position of the C3N3-ring bending mode in the region near 810 cm−1 is discussed.

Infrared spectra of some derivatives of unsaturated phosphinic acids

1961 ◽  
Vol 10 (1) ◽  
pp. 62-66 ◽  
Author(s):  
N. A. Slovokhotova ◽  
K. N. Anisimov ◽  
G. M. Kunitskaya ◽  
N. E. Kolobova
Keyword(s):  
Infrared Spectra ◽  
Phosphinic Acids ◽  
Derivatives Of

Infrared Spectra in Identification of Derivatives of Cyclopropane

1952 ◽  
Vol 24 (4) ◽  
pp. 623-625 ◽  
Author(s):  
S. E. Wiberley ◽  
S. C. Bunce
Keyword(s):  
Infrared Spectra ◽  
Derivatives Of

Synthesis of Galactomannan Sulfate-Citrate

2022 ◽  
Vol 1049 ◽  
pp. 218-223
Author(s):  
Aleksandr S. Kazachenko ◽  
Yuriy N. Malyar ◽  
Anna S. Kazachenko
Keyword(s):  
Biological Activity ◽  
Ftir Spectroscopy ◽  
X Ray Diffraction ◽  
Absorption Bands ◽  
X Ray ◽  
Mixed Ester ◽  
First Time ◽  
Derivatives Of

Sulfated derivatives of polysaccharides have anticoagulant, hypolipedimic and other biological activity. In this work, a complex mixed ester of galactomannan, its sulfate-citrate, was obtained for the first time. The introduction of citrate and sulfate groups was proved by FTIR spectroscopy by the appearance of corresponding absorption bands. It was shown by X-ray diffraction that the introduction of the citrate group leads to the amorphization of the galactomannan structure.

Pyrrole Studies. I. The Infrared Spectra of 2-Monosubstituted Pyrroles

1963 ◽  
Vol 16 (1) ◽  
pp. 93 ◽  
Author(s):  
RA Jones
Keyword(s):  
Infrared Spectra ◽  
Infrared Absorption ◽  
Absorption Bands ◽  
Infrared Absorption Bands

The positions and intensities of the characteristic infrared absorption bands of the nucleus are recorded and discussed for thirty-five 2-monosubstituted pyrroles.

scholarly journals THE USE OF INFRARED SPECTROPHOTOMETRY FOR THE ESTIMATION OF SMALL QUANTITIES OF SOME HALOGENATED HYDROCARBONS

1953 ◽  
Vol 31 (4) ◽  
pp. 328-337 ◽  
Author(s):  
L. Breitman ◽  
E. W. R. Steacie
Keyword(s):  
Quantitative Analysis ◽  
Carbon Tetrachloride ◽  
Gas Phase ◽  
Infrared Spectra ◽  
Methyl Chloride ◽  
Ternary Mixtures ◽  
Halogenated Hydrocarbons ◽  
Infrared Spectrophotometry ◽  
Absorption Bands ◽  
Binary And Ternary Mixtures

The infrared spectra of chloral, carbon tetrachloride, and chloroform have been determined between 1500 and 650 cm.−1 over a range of pressures in the gas phase. Absorption bands suitable for the quantitative analysis of binary and ternary mixtures of the components have been selected and their peak intensities shown to obey Beer's Law over the range of pressures studied. Ternary mixtures have been analyzed from the spectra with an accuracy of about 20%.The spectra of dichloromethane and methyl chloride have also been measured under comparable conditions.

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