Infrared absorption spectra and Raman spectra of the perrhenate tetrahydrates of the rare earth elements, lanthanum, and yttrium

AbstractThe Mα and Mβ emission spectra and the Mjv and My absorption spectra have been studied for the entire series of rare-earth elements. It is conclusively shown that the complicated multiplet structure observed in the emission spectra is not real emission structure but is, instead, produced by sample self-absorption. This is demonstrated by observing the emission spectra over wide variations in take-off angle and bombarding electron energies and finally by comparing the detailed structure of both the emission and absorption spectra. The MIV and MV absorption structure completely overlaps the Mα and Mβ emission lines, which are each found to have but one intensity maximum when obtained under conditions of minimum. self-absorption. Some of these spectra have never been shown previously, while others have been studied in detail by several investigators. Points of agreement and disagreement with previous work are mentioned, and the wavelengths of the emission lines and absorption edges are listed for all of the rare-earth elements. It is concluded that the 4f → 3d electron transitions are reversible in these elements.

Download Full-text

Vibrational spectra of organoarsenic compounds Communication 3. Infrared absorption spectra and raman spectra of a number of cyclic esters of acids of trivalent arsenic

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science ◽

10.1007/bf00867692 ◽

1966 ◽

Vol 15 (12) ◽

pp. 2027-2031

Author(s):

R. R. Shagidullin ◽

T. E. Pavlova

Keyword(s):

Absorption Spectra ◽

Raman Spectra ◽

Infrared Absorption ◽

Vibrational Spectra ◽

Cyclic Esters ◽

Trivalent Arsenic ◽

Infrared Absorption Spectra

Download Full-text

Infrared Absorption Spectra of Inorganic Solids. IV. Hexafluorosilicates. Raman Spectra of Aqueous SiF62-

Inorganic Chemistry ◽

10.1021/ic50039a045 ◽

1966 ◽

Vol 5 (5) ◽

pp. 929-931 ◽

Cited By ~ 32

Author(s):

R. B. Badachhape ◽

G. Hunter ◽

L. D. McCory ◽

J. L. Margrave

Keyword(s):

Absorption Spectra ◽

Raman Spectra ◽

Infrared Absorption ◽

Inorganic Solids ◽

Infrared Absorption Spectra

Download Full-text

Schwingungsspektren von Derivaten des Pentaerythrits

Zeitschrift für Naturforschung A ◽

10.1515/zna-1966-1112 ◽

1966 ◽

Vol 21 (11) ◽

pp. 1889-1898 ◽

Cited By ~ 1

Author(s):

G. Geiseler ◽

L. Ratz

Keyword(s):

Force Field ◽

Absorption Spectra ◽

Raman Spectra ◽

Infrared Absorption ◽

Matrix Method ◽

Normal Coordinate ◽

Normal Vibrations ◽

Valence Force ◽

Valence Force Field ◽

Infrared Absorption Spectra

Infrared absorption spectra (4000—400 cm-1) and RAMAN spectra of the pentaerythritol halides have been examined. By comparison with spectra of similar compounds and by a normal coordinate analysis with the aid of the GF-Matrix-Method of WILSON and on the basis of a modified valence force field it was possible to assign a great deal of the normal vibrations. The influence of the halogen atoms on the frequency of characteristic vibrations has been discussed.

Download Full-text

Etude expérimentale et théorique des spectres de vibration des dérivés di- et trisubstitués de l'isothiazole

Canadian Journal of Chemistry ◽

10.1139/v77-316 ◽

1977 ◽

Vol 55 (12) ◽

pp. 2302-2309 ◽

Cited By ~ 6

Author(s):

Gilbert Mille ◽

Michel Guiliano ◽

Jacques Chouteau

Keyword(s):

Solid State ◽

Absorption Spectra ◽

Raman Spectra ◽

Infrared Absorption ◽

Liquid Solution ◽

Etude Expérimentale ◽

Normal Vibrations ◽

Modes Of Vibration ◽

Infrared Absorption Spectra ◽

Étude Expérimentale

The infrared absorption spectra in different physical states (liquid, solution, vapor) and the Raman spectra in the liquid or solid state of di- and trisubstituted isothiazole derivatives have been analyzed. For some compounds a study of the normal vibrations has also been done. An assignment of the fundamental modes of vibration of these molecules is given and discussed.

Download Full-text