Knör, Günther and Leirer, Markus and Vogler, Arnd (2000) Synthesis, characterization and spectroscopic properties of 1,2-diiminetricarbonylrhenium(I)chloride complexes with o-benzoquinone diimines as ligands. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 610 (1-2). pp. 16-19. ISSN 0022-328X
Full text not available from this repository. (Request a copy)Abstract
The novel organometallic complexes Re(BQDI-R)(CO)(3)Cl with BQDI-R = 4,5-substituted o-benzoquinone diimines (R = H, Me, OMe, Cl) have been prepared and characterized by elemental analysis, IR, MS and H-1-NMR spectroscopic methods. Their electronic spectra display a long-wavelength absorption band which can be ascribed to a metal-to-ligand charge transfer (MLCT) transition from Re(I) to the low-lying pi*-orbitals of the o-benzoquinone diimine ligand, even though a significant degree of metal-ligand orbital mixing is occurring. The energy of this absorption band correlates very well with the nature of the substituents R in the 4,5-position of BQDI-R. In solvent series of decreasing polarity, the MLCT absorption maximum is shifted to longer wavelengths (negative solvatochromism). None of the Re(BQDI-R)(CO)(3)Cl complexes studied is photoluminescent at 298 or 77 K. (C) 2000 Elsevier Science S.A. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CRYSTAL-STRUCTURE; RUTHENIUM; rhenium complexes; charge transfer; quinones; diimines; substituent effects; solvatochromism |
| 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: | 23 Mar 2022 08:01 |
| Last Modified: | 23 Mar 2022 08:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42201 |
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