Beyond Classical Coordination Chemistry: The First Case of a Triply Bridging Phosphine Ligand
| Autor: | Nina P. Gritsan, Vladimir P. Fedin, Andrey Yu. Baranov, Denis G. Samsonenko, Elena A. Pritchina, Alexey S. Berezin, Nataliya A. Belogorlova, Alexander V. Artem'ev |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Mechanochromic luminescence Valence (chemistry) 010405 organic chemistry Ligand General Chemistry General Medicine 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Coordination complex chemistry.chemical_compound Crystallography chemistry Quantum efficiency Phosphorescence Lone pair Phosphine |
| Zdroj: | Angewandte Chemie (International ed. in English). 60(22) |
| ISSN: | 1521-3773 |
| Popis: | The first example of a triply bridging (μ3 -P) phosphine ligand has been discovered in the crown-shaped [Cu3 (μ2 -Hal)3 L] (Hal=Cl, Br, or I) complexes supported by tris[2-(2-pyridyl)ethyl]phosphine (L). Theoretical analysis completely confirms the observed μ3 -P-bridging pattern, revealing the interaction of the same lone pair of phosphorus with three valence 4s-orbitals of Cu atoms. The presented complexes exhibit outstanding blue phosphorescence (λem =442-465 nm) with the quantum efficiency reaching 100 %. The complex [Cu3 (μ2 -I)3 L] also exhibits remarkable thermo- and mechanochromic luminescence resulting in a sharp change in the emission colour upon external stimuli. These findings essentially contribute to coordination chemistry of the pnictine ligands. |
| Databáze: | OpenAIRE |
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