Interconfigurational absorption and two-photon excitation spectra of hexachloroplatinate(2-) containing crystals

Autor:	Timothy A. Keiderling, Ryong K. Yoo
Rok vydání:	1990
Předmět:	Ligand field theory Nuclear magnetic resonance Absorption spectroscopy Chemistry Excited state General Engineering Analytical chemistry Absorption (logic) Emission spectrum Physical and Theoretical Chemistry Excitation Energy (signal processing) Spectral line
Zdroj:	The Journal of Physical Chemistry. 94:8048-8055
ISSN:	1541-5740 0022-3654
Popis:	Low-temperature absorption and two-photon excitation spectra of complexes containing PtCl{sub 6}{sup 2{minus}} are presented and discussed. One-photon absorption spectra with moderately well resolved vibronic structure were obtained for PtCl{sub 6}{sup 2{minus}} in dilute mixed crystals. The data show that a transition to a low-lying interconfigurational state is located at {approximately} 18,000 cm{sup {minus}1} in the spectral frequency region below the first absorption transition previously assigned by others. This transition cannot be unambiguously assigned. If it corresponds to the same excited state responsible for the PtCl{sub 6}{sup 2{minus}} emission spectrum, this would lead to a partial reassignment of the excited states from that of earlier work. Ligand field calculations consistent with such a reassignment are presented. The two-photon excitation (TPE) spectra of the mixed Cs{sub 2}ZrCl{sub 6}:PtCl{sub 6}{sup 2{minus}} and pure K{sub 2}PtCl{sub 6} (at 77 K), measured with an improved spectrometer, show a noticeable improvement in signal-to-noise ratio compared to the previously reported TPE spectra of K{sub 2}PtCl{sub 6} and are assigned to higher energy d-d transitions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6f5c37df9c95b2aeda0a6eec2715c1d https://doi.org/10.1021/j100384a015 Zobrazit plný text záznamu