Bisaryl Diruthenium(III) Paddlewheel Complexes: Synthesis and Characterization
| Autor: | Tong Ren, Adharsh Raghavan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Steric effects
1h nmr spectroscopy Absorption spectroscopy 010405 organic chemistry Chemistry Organic Chemistry DMBA 010402 general chemistry Mass spectrometry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Crystallography Excited state Density functional theory Differential pulse voltammetry Physical and Theoretical Chemistry |
| Zdroj: | Organometallics. 38:3888-3896 |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/acs.organomet.9b00555 |
| Popis: | Aryls represent a class of both σ- and π-donating electron-rich axial ligands that is underexplored in the field of metal–metal multiply bonded paddlewheel species. By a decrease in the steric bulk around the diruthenium axial sites and an increase in the basicity of the bridging ligands, the first examples of bisaryl diruthenium(III) paddlewheel complexes have been isolated. Compounds of the form Ru2(DMBA)4Ar2 (DMBA = N,N′-dimethylbenzamidinate, Ar = C6H4-4-tBu (1), C6H5 (2), C6H3-3,5-(OCH3)2 (3)) were synthesized via a lithium–halogen exchange reaction between Ru2(DMBA)4Cl2 and excess LiAr and characterized using mass spectrometry, electronic absorption spectroscopy, cyclic and differential pulse voltammetry, and 1H NMR spectroscopy. The molecular structures of compounds 1–3 were established using single-crystal X-ray diffraction analysis and their electronic structures (both ground and excited state) analyzed using density functional theory calculations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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