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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Expósito, J. E. Lentijo, S. Aullón, G. Miguel, J. A. Espinet, P. |
| Description | Author Affiliation: Lentijo S ( IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain. Jamiguel@qi.uva.es espinet@qi.uva.es.) |
| Abstract | The perylene derivatives 3-isocyanoperylene (Per–N≡C) (4a) and N-(2,5-di-tert-butylphenyl)-9-isocyano-perylene-3,4-dicarboximide (PMI–N≡C) (4b) were prepared and used to synthesize gold complexes [AuX(CNR)] (X = $C_{6}F_{5}$ (5a,b), $C_{6}F_{4}-O^{n}Bu-p$ (6b)). The reaction of 5b and 6b with $HNEt_{2}$ led to the carbene complexes $[AuX\{C(NEt_{2})(NHR)\}]$ (7b, 8b), respectively. The molecular structure of complexes 7b and 8b have been determined by X-ray diffraction analysis showing intermolecular π-stacking of the perylene groups and $C_{6}F_{5}$ rings and no Au⋯Au interactions. The derivative compounds $[M(CO)_{5}(CNR)]$ (M = Cr (9a,b), Mo (10a,b) or W (11a,b)) and $trans-[Pd(CNR)_{2}(C_{6}F_{3}Cl_{2})_{2}]$ (12a,b) were also prepared. All complexes exhibit fluorescence associated with the perylene fragment with emission quantum yields, in solution at room temperature, in the range 0.05–0.93 and emission lifetimes ∼ 4 ns. DFT calculations were performed of the absorption spectra of the ligands Per–N≡C and PMI–N≡C and representative complexes $[Au(C_{6}F_{5})(CNR)],$ $[Cr(CO)_{5}(CNR)],$ showing a perylene-dominated intraligand π–π* emissive state, from the HOMO and LUMO orbitals of the perylene chromophore, but with significantly different absorption maxima by the influence of the metal fragment, particularly significant in the Per–N≡C derivatives. |
| ISSN | 14779226 |
| Issue Number | 28 |
| Journal | Dalton Trans. |
| Volume Number | 43 |
| e-ISSN | 13645447 |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Publisher Date | 2014-07-28 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Subscribed |
| Subject Keyword | Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Inorganic Chemistry |
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