Bulky Phosphines

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 CarmonaMª Carmen Nicasio and Riccardo Peloso at University of Sevilla.

See for example:

  1. 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.
  2. 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 PhosphinesEur. J. Inorg. Chem.2018, 2309.
  3. 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 LigandsPolyhedron 2016, 116, 170.
  4. 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. 201554, 15379 [Hot Paper]