We recently embarked to explore the use of terphenyl phosphines, in which the traditionally used biaryl substituent is replaced by a sterically more crowded terphenyl (2,6-diarylphenyl) group. Over the last few years we have demonstrated their potential to stabilize otherwise elusive organometallic frameworks, such as the first digold species containing a bridging methyl fragment (see below). We are currently developing this line of research along with Profs. Ernesto Carmona, Mª Carmen Nicasio and Riccardo Peloso at University of Sevilla.
See for example:
- Moreno, J. J.; Espada, M. F.; Campos, J.; López-Serrano, J.; Macgregor, S. A.; Carmona, E. Base-Promoted, Remote C-H Activation at a Cationic (η5-C5Me5)Ir(III) Center Involving Reversible C-C Bond Formation of Bound C5Me5, J. Am. Chem. Soc. 2019, DOI: 10.1021/jacs.8b11752.
- Moreno, J. J.; Espada, M. F.; Krüger, E.; López-Serrano, J.; Campos, J.; Carmona, E. Ligand Rearrangement and Hemilability in Rhodium(I) and Iridium(I) Complexes Bearing Terphenyl Phosphines, Eur. J. Inorg. Chem., 2018, 2309.
- Ortega-Moreno, L.; Fernández-Espada, M.; Moreno, J. J.; Navarro, C.; Campos, J.; Conejero, S.; López-Serrano, J.; Maya, C.; Peloso, R.; Carmona, E. Synthesis, Properties, and Some Rhodium, Iridium, and Platinum Complexes of a Series of Bulky m-Terphenylposphine Ligands, Polyhedron 2016, 116, 170.
- Espada, M. F.; Campos, J.; López-Serrano, J.; Poveda, M. L.; Carmona, E. Methyl-, Ethenyl-, and Ethynyl-Bridged Cationic Digold Complexes Stabilized by Coordination to a Bulky Terphenylphosphine Ligand, Angew. Chem. Int. Ed. 2015, 54, 15379 [Hot Paper]