Monkowius, Uwe and Ritter, Stefan and Koenig, Burkhard and Zabel, Manfred and Yersin, Hartmut (2007) Synthesis, characterisation and ligand properties of novel bi-1,2,3-triazole ligands. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (29). pp. 4597-4606. ISSN 1434-1948,
Full text not available from this repository.Abstract
Three 1,1'-disubstituted 4,4'-bi-1H-1,2,3-triazoIs [R-bta; R = Bn (1), Ph (2), CH2COOH (3)] have been synthesised as bidentate, nitrogen-based ligands by a Cu-I-catalysed "click" reaction between 1,3-butadiyne and organic azides. Their ligand properties were investigated by preparation of the complexes [Run(II)(R-bta)(3)]Cl-2 [R = Bn (4), Ph (5), CH2COOH (6)], [(Bn-bta)Cu-I(DPEPhos)] (7) [DPEPhos = bis(2-(diphenylphosphanyl)phenyl) ether] and [(Bn-bta)Re-I(CO)(3)Cl] (8) following standard reaction procedures. All compounds were analysed by elemental analysis, mass spectrometry and NMR, IR, UV/ Vis and luminescence spectroscopy. In addition, the molecular structures of 1-4, 7, and 8 have been determined by X-ray crystallography. In all complexes the Bn-bta acts as a bidentate ligand with structural features comparable to the analogous 2,2'-bipyridine complexes. In their electronic absorption spectra the Ru-II and Re-I complexes exhibit a lowest energy band at around 300 nm, which is substantially higher in energy than in analogous complexes with bpy ligands. All R-bta ligands yield complexes that are not luminescent in solution or in the solid state, which makes these ligands particularly suited for use as spectator ligands.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CYCLOMETALATED IR(III) COMPLEXES; TRANSITION-METAL-COMPLEXES; LIGHT-EMITTING DEVICES; ENERGY-TRANSFER; CRYSTAL-STRUCTURES; ANCILLARY LIGANDS; ELECTROLUMINESCENT DEVICES; PHOTOPHYSICAL PROPERTIES; RUTHENIUM(II) COMPLEXES; POLYPYRIDINE COMPLEXES; N ligands; ligand design; nitrogen heterocycles; click reaction; 1,2,3-triazole |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Hartmut Yersin |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 09:08 |
| Last Modified: | 02 Dec 2020 11:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32105 |
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