Raman spectra of the hexachloropalladate, hexachloroplatinate and hexabromoplatinate ions in aqueous solution
01 Jan 1961-Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy (Elsevier)-Vol. 17, Iss: 6, pp 594-599
TL;DR: The complete Raman spectra of the ions PdCl 6 2−, PtCl6 2− and PtBr 6 2 − in aqueous solution are observed, using excitation by the helium yellow and red lines as mentioned in this paper.
About: This article is published in Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.The article was published on 1961-01-01. It has received 53 citations till now. The article focuses on the topics: Hexachloroplatinate & Ion.
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TL;DR: In this article, the Raman spectra of various types of niobium oxides have been studied along with their i.r. spectra and the spectra interpreted in the light of the structures of the oxides.
162 citations
TL;DR: The vibrational spectra of the molecular M6+O6 (M = Mo, Te, W) group in ordered perovskites of the type Ba2M2+M6 +O6 are reported in this article.
96 citations
TL;DR: In this article, the infrared and Raman spectra of SbCl5, PCl5 (PCl4+PCl6−) and TaCl5 have been investigated.
82 citations
TL;DR: In this paper, the infrared spectra of hexachloro complexes have been measured from 14 to 35 μ and a strong band observed in the range 350 ∼ 300 cm −1 was assigned to the triply degenerate stretching vibration.
79 citations
TL;DR: In this paper, the second order Jahn-Teller effect in the Raman spectra of the complexions SeCl62, SeBr62, TeCl62 and TeBr62− was investigated.
Abstract: Although the complex-ions SeCl62−, SeBr62−, TeCl62− and TeBr62− are regular octahedral, the infrared spectra show that some evidence is present for vibronic coupling between ground state and first excited state (dynamic second order Jahn-Teller effect).
The electronic absorption spectra are reported and assignments given. The splittings of the absorption bands closely resemble those found in the spectra of the alkali halide phosphors (KCl: Tl+ etc.). As for the phosphors, an explanation is given in terms of a dynamic Jahn-Teller effect in the excited states.
In connection with this, attention is paid to the unusual intensities of the Jahn-Teller active modes (eg and t2g) in the Raman spectra of these complex-ions.
65 citations
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TL;DR: In this paper, a complete investigation and interpretation of the Raman and infrared spectra of MoF6, WF6 and UF6 was carried out and the results showed that the molecules belong to the point group Oh and have totally symmetric octahedral structure.
Abstract: This paper is a report of the complete investigation and interpretation of the Raman and infrared spectra of MoF6, WF6, and UF6. The Raman photographs of MoF6 and WF6 exhibit three intense lines in accord with earlier measurements on UF6 in solution. The exploration of the infrared spectra of MoF6 and WF6 from 2–40μ yielded a great many bands for each molecule. Two of these were quite intense in each case and were identified as fundamentals while the remaining weaker ones were identified as overtones and combinations. The infrared spectrum of UF6 was repeated from 2–17μ with substantially the same results as in the earlier work. Extension of this spectrum from 17–40μ was made and three new bands were discovered.Because of the great similarity of the spectra of these three molecules, an interpretation of the bands was made along lines suggested by Bigeleisen, Mayer, Stevenson, and Turkevich for UF6, that the molecule belongs to the point group Oh and has totally symmetric octahedral structure. It was possible to fit all but five very weak bands into an identification scheme based on this model. The success of this effort is taken to be conclusive evidence in favor of the Oh type symmetry.
65 citations
TL;DR: The Raman spectra of the gaseous and liquid hexafluorides of sulfur, selenium and tellurium were determined in this paper, and three lines for each substance were observed and this is the number permitted by the selection rules for a regular octahedral molecule.
Abstract: The Raman spectra of the gaseous and liquid hexafluorides of sulfur, selenium and tellurium were determined (Table I). Three lines for each substance were observed and this is the number permitted by the selection rules for a regular octahedral molecule. Frequency formulae based on central forces were derived, and these, together with the appearance of the spectra, were used to assign the observed frequencies to the proper modes of vibration. Estimates of the magnitudes of the forbidden frequencies were made. A provisional value of —238,000 cal. is given for the free energy of formation of SF6 (g) at 25°.
64 citations
TL;DR: In this paper, a brief report on some recent work of the Department of Physics at Sao Paulo University, on the excitation of Raman spectra in the red and near infra-red region of the spectrum is presented.
56 citations
TL;DR: A spiral mercury arc light source of the low pressure variety and 2-kilowatt power dissipation is described in this paper, where the use of this powerful but geometrically undesirable arrangement for making depolarization measurements is investigated.
Abstract: A spiral mercury arc light source of the low pressure variety and 2-kilowatt power dissipation is described. The use of this powerful but geometrically undesirable arrangement for making depolarization measurements is investigated. Calculations of convergence errors using the polarized incident light method of Edsall and Wilson indicate a linear convergence correction of measured ρ-values. Measurement of depolarization values of Raman lines whose ρ-value is accurately known confirms the theoretical calculation of convergence correction. From the results moderately accurate ρ-values can be obtained by this method by using an empirical correction curve.
56 citations
15 citations