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| Title: | Protic- or anionic-NHCs with a classical-NHC in a single [Ru(CNC)(PPh3)2Cl]Cl pincer complex: direct comparison of structure & electronic properties and heterolytic H2 splitting |
| Authors: | Srivastava, Navdeep Singh, Amrendra Kumar |
| Issue Date: | 2024 |
| Publisher: | Royal Society of Chemistry |
| Citation: | Srivastava, N., & Singh, A. K. (2024). Protic- or anionic-NHCs with a classical-NHC in a single [Ru(CNC)(PPh3)2Cl]Cl pincer complex: Direct comparison of structure & electronic properties and heterolytic H2 splitting. Dalton Transactions. Scopus. https://doi.org/10.1039/d4dt00623b |
| Abstract: | Herein, we report the first set of pincer complexes 1 and 2 with the general formula [Ru(CNC)(PPh3)2Cl]Cl having a protic- and classical-NHC in the same molecule and nearly identical environments. Deprotonation of the protic-NHC complex 2 with one equivalent of base leads to the formation of anionic-NHC complex 2′. These complexes allow a direct comparison of protic- and anionic-NHCs with the classical-NHC ligand. A comparison of the molecular structure indicated that the metal carbene bond length trend is anionic-NHC > protic-NHC > classical-NHC. The electrochemical investigation revealed the electron donation tendency is classical-NHC > protic-NHC and anionic-NHC > protic-NHC. Cooperation between the metal and the ligand is indicated by the reaction of 2′ with H2 gas at 1 atm pressure and 110 °C to give the Ru-hydride complex 3. © 2024 The Royal Society of Chemistry. |
| URI: | https://doi.org/10.1039/d4dt00623b https://dspace.iiti.ac.in/handle/123456789/13793 |
| ISSN: | 1477-9226 |
| Type of Material: | Journal Article |
| Appears in Collections: | Department of Chemistry |
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