Kern, Thomas and Monkowius, Uwe and Zabel, Manfred and Knoer, Guenther (2011) Synthesis, crystal structure and charge transfer spectra of dinuclear copper(I) complexes bearing 1,2-bis(arylimino)acenaphthene acceptor ligands. INORGANICA CHIMICA ACTA, 374 (1). pp. 632-636. ISSN 0020-1693,
Full text not available from this repository. (Request a copy)Abstract
A series of dinuclear halide bridged copper(I) complexes with a central [Cu(2)(mu-X)(2)] diamond core (X = Cl, Br and I) and substituted bis(imino)acenaphthene (BIAN) ligands acting as strong pi-acceptor subunits was prepared and characterized by elemental analysis, X-ray crystallography and various spectroscopic techniques. In the visible spectral range, the electronic spectra of these deeply colored air-stable compounds are dominated by low-lying charge transfer (CT) transitions. The corresponding broad absorption bands display a bathochromic shift and a decreasing amount of negative solvatochromism in the series X = Cl, Br and I. At the same time, the distance between the two metals becomes shorter and reaches the range of cuprophilic interactions. These systematic trends are interpreted as a decreasing amount of charge transfer character and a more pronounced delocalization between the two copper centers within in the same series. (C) 2011 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RIGID NITROGEN LIGAND; LEWIS-BASE ADDUCTS; METAL(I) COMPOUNDS; BR; SOLVENT; IODIDE; X=I; BIAN ligands; Copper; Electronic spectra; Solvatochromism; Charge transfer |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 Jun 2020 10:01 |
| Last Modified: | 03 Jun 2020 10:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20482 |
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