Assignment Of Fundamental Modes Research Articles

Etude des spectres de vibration des dimethyl et diethyl-1,1 stanna cyclohexanes

Main vibration frequencies of the heterocyclic compounds (CH 2) 5Sn X 2 ( X = methyl or ethyl) have been determined; comparison with the silacyclohexanes (CH 2) 5Si X 2 ( X = H, D, CH 3) aided in the assignment of fundamental modes.

Vibrational spectra of nitrosyl and carbonyl complexes—II: Carbonylpentahalogeno complexes of osmium, ruthenium, iridium and rhodium

The Raman (40–1200 cm −1) and i.r. (30–2200 cm −1) spectra were measured of the complexes Cs 2[ M(CO) X 5] ( M = Os, Ru, Ir, Rh; X = Cl, Br; M = Ir, Rh; X = I) in the solid state. Assignments of fundamental modes are proposed on the basis of these spectra, and those of 13C-enriched samples of two of the salts.

The low-frequency infrared and Raman spectra of dialkyl sulphide complexes of platinum (II) halides

A series of cis and trans square planar platinum (II) dialkyl sulphide complexes of the type Pt X 2 L 2 where X = Cl, Br and I, and L = dialkyl sulphide have been prepared. Infrared and Baman spectra have been recorded over the range 90–400 cm −1 and assignments of fundamental modes are suggested. Where possible assignments have been compared with the corresponding trans palladium complexes.

Studies on transition-metal peroxy-complexes. Part VI. Vibrational spectra and structure

The Raman and infrared spectra have been measured of a range of transition-metal complexes involving bidentate or bridging peroxide groups, and also of those containing the hydroperoxide ligand or hydrogen peroxide of crystallisation. Assignments of fundamental modes are suggested; the results can be used to distinguish between the various types of peroxide complex.

Raman spectra of ruthenium tetroxide and related species

The Raman spectra of ruthenium and osmium tetroxides have been measured in the liquid, solid, and aqueous solution states, and spectra of ruthenates are also reported. Assignments of fundamental modes are suggested.

Infrared spectra of SiF3H, SiF3D, SiD3F and SiD3Cl

Abstract The infrared spectra of SiF 3 H, SiF 3 D, SiD 3 F and SiD 3 Cl have been obtained under prism dispersion and an assignment of fundamental modes has been made.

New Measurements on the Infrared Spectrum of F2O

The infrared spectrum of F2O has been re-examined from 2–25μ with a prism spectrometer and selected regions further examined with a grating spectrometer. Several bands observed by Hettner, Pholmann, and Schumacher have been shown to be caused by impurities. Other bands observed by them have been resolved, and an assignment of fundamental modes has been made which is consistent with dimensions of the molecule obtained from electron diffraction data. Two new bands have been observed and assigned to combinations of the fundamentals. The present observed frequencies and their assignments are: ν1=928 cm−1, ν2=461 cm−1, ν3=831 cm−1, ν1+ν3 and 2ν2+ν3 at 1731 cm−1, 3ν3=2460 cm−1, 2ν1+ν3=2643 cm−1.