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Synthesis and Structure of (Nitronyl Nitroxide-2-ido)(tert-butyldiphenylphosphine)gold(I) and -(Di(tert-butyl)phenylphosphine)gold(I) Derivatives; Their Comparative Study in the Cross-Coupling Reaction
| Content Provider | MDPI |
|---|---|
| Author | Zayakin, Igor Bagryanskaya, Irina Stass, Dmitri Kazantsev, Maxim Tretyakov, Evgeny |
| Copyright Year | 2020 |
| Description | We synthesized two new organogold derivatives of a nitronyl nitroxide (NN) with phosphine ligands, namely NN-Au-PtBuPh2 and NN-Au-PtBu2Ph. They were characterized by X-ray diffraction analysis, cyclic voltammetry, and ESR, IR, and UV/Vis spectroscopy. The X-ray structural analysis revealed a tendency of the NN moiety to form a large number of short intermolecular contacts. This phenomenon is related to the anionic nature of the paramagnetic group NN, as evidenced by a significantly lower oxidation potential in comparison with purely organic derivatives of NN radicals. The cross-coupling reaction of NN-Au-PPh3, NN-Au-PtBuPh2, or NN-Au-PtBu2Ph with an activated bromoarene, namely, p-BrC6H4NO2, was investigated. It was shown that regardless of the presence of the bulky tert-butyl substituent, all gold derivatives have similar activities in the cross-coupling reaction and give a cross-coupling product, NN-C6H4NO2, with comparable yields. |
| Starting Page | 770 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst10090770 |
| Journal | Crystals |
| Issue Number | 9 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-08-31 |
| Access Restriction | Open |
| Subject Keyword | Crystals Inorganic Chemistry Nitronyl Nitroxide Organogold Derivatives X-ray Diffraction Analysis Esr Spectroscopy Pd(0)-catalyzed Cross-coupling |
| Content Type | Text |
| Resource Type | Article |
