| Autor: |
Skylar J. Ferrara, Nicole Kfoury, Matteo Chierchia, Leila Duman, Ava Kreider-Mueller, Perry M. Scheetz, James Morris, Tedros A. Balema, Joseph M. Tanski, Craig M. Anderson, Michael A. Weinstein |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Journal of Organometallic Chemistry. 723:188-197 |
| ISSN: |
0022-328X |
| DOI: |
10.1016/j.jorganchem.2012.10.027 |
| Popis: |
The reaction of [Pt 2 (CH 3 ) 4 ( μ -S(CH 3 ) 2 ) 2 ] with four equivalents of ligand C 4 H 3 SCH NCH 2 C 6 H 5 gives the platinum (II) complex [Pt{(C 4 H 2 S)CH NCH 2 C 6 H 5 } 2 ] with two cyclometalated CˆN ligands. [Pt{(C 4 H 2 S)CH NCH 2 C 6 H 5 } 2 ] can also be prepared by refluxing the monometalated species [Pt(C 4 H 2 SCH NCH 2 C 6 H 5 )CH 3 (S(CH 3 ) 2 )], alone in toluene or with the addition of one equivalent of ligand C 4 H 3 SCH NCH 2 C 6 H 5 . Similar reactions were observed for [Pt 2 (CH 3 ) 4 ( μ -S(CH 3 ) 2 ) 2 ] with the ligands ( S )-C 4 H 3 SCH NCHCH 3 C 6 H 5 and C 4 H 3 SCH NC 6 H 5 , and the corresponding monocyclometalated species. A mechanism of formation is proposed with the support of DFT calculations. The complexes show emission, in solution, at room temperature, with emission bands red-shifted ∼200 nm, excited state lifetimes of the order of 1 μs, and modest quantum yields up to 0.012. DFT calculations were used to assist in the assignment of the electronic spectroscopy. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect