Excited state properties of (acetylacetonato)dicarbonyliridium(I)

Kunkely, Horst and Vogler, Arnd (2005) Excited state properties of (acetylacetonato)dicarbonyliridium(I). INORGANIC CHEMISTRY COMMUNICATIONS, 8 (1). pp. 119-121. ISSN 1387-7003, 1879-0259

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Abstract

Monomeric Ir(CO)(2)acac as it occurs in dilute solutions (<10(-3) M) absorbs only in the UV spectral region and shows a greenish luminescence (lambda(max) = 480 nm) which originates from the lowest-energy intraligand (acac) triplet. At higher concentrations a yellow coloration is observed which is attributed to the formation of oligomers. At 77 K these solutions turn blue owing to the presence of oligomers which are characterized by strong metal-metal interactions. These blue oligomers display an intense red luminescence which consists of a fluorescence at lambda(max) = 662 nm and a phosphorescence at lambda(max) = 815 nm. (C) 2004 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: AMBIENT CONDITIONS; INTRALIGAND PHOSPHORESCENCE; ISOCYANIDE COMPLEXES; CRYSTAL-STRUCTURE; PHOTOCHEMISTRY; SPECTROSCOPY; PLATINUM; RHODIUM; DISSOCIATION; LEAD(II); electronic spectra; luminescence; iridium; acetylacetonate
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Arnd Vogler
Depositing User: Dr. Gernot Deinzer
Date Deposited: 02 Jun 2021 08:27
Last Modified: 02 Jun 2021 08:27
URI: https://pred.uni-regensburg.de/id/eprint/36708

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