cAAC-Light · New Strategies for Bond Activation and Catalysis with subvalent Main Group Complexes
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2021-09-01 → 2023-08-31
- EU contribution
- €163,099
- Participants
- 2
- Scheme
- MSCA-IF
Lines connect the coordinator with its partners.
Results in brief
New Strategies for Bond Activation and Catalysis with subvalent Main Group Complexes
Catalysis is the base of the Chemical industry, which is related with the 20-30% of the world GDP. The development of catalyst have an impact of 3- 4 billion of euros in Europe. Catalysis is at the centre of promising solutions to many of the EU Societal Challenges, being a key technology in the European future economy, industry and sustainable growth. However, there are still many challenges to be addressed such as cost efficiency, selectivity or substrate scope. Our study is in clear alignment with the design of new more efficient catalyst and the study of the cooperativity in catalysis. Focusing on unexplored synergies between Main Group (MG) and Transition Metals (TM), we expect to reveal new reactivity concepts for small molecules and the activation of uncommon bonds for TM systems such as N-H bond of the ammonia. The main objectives of this projects are: To synthesize a variety of MG-carbene complexes to explore their capacity towards the activation of small molecules. To test the capacity of the MG-carbene and MG-TM complexes for the light-driven activation of non-classical bonds. To explore the cooperativity of the MG/TM complexes on the reversible activation of E-H bonds. To synthesize and characterize a variety of hybrid MG/TM complexes based on P,carbene chelating scaffolds functionalised with bulky moieties or N,P ligands.
Data: CORDIS, © European Union
Project objective
This proposal aims to explore the feasibility and scope of thermal and light-driven bond activation and catalysis by sub-valent group 14 Main Group (MG) systems stabilized by highly σ-donating cAAC (cyclic (alkyl)amino carbene) ligands, exploiting their reduced HOMO-LUMO energy gaps, including MG-cAAC complexes, directly bonded MG/TM ( TM = transition metal) species and unprecedented hybrid MG/TM systems.We will initially target exotic cationic MG-cAAC complexes to investigate their capacity towards the activation of common E—H bonds (e.g. silanes, boranes or amines,including ammonia), including reversibility studies. This will be followed by exploring the activation of more challenging substrates, particularly the oxidative cleavage of C—H bonds. To enhance the capacity of activating less reactive bonds (e.g. intermolecular C—H, C—X…), as well as to enable more accessible reversibility routes (e.g. reversible H2 activation), we will target a variety of cooperative systems that will rely on the synergistic action of a MG element and a TM in close proximity. Investigating these synergistic effects will set the basis for designing more efficient systems in the search for innovative cooperative catalysis. In particular, this approach will permit the low-valent MG element to act as the activator, while the TM in close proximity may provide additional mechanistic routes for further functionalization. In the long term, we expect that our novel strategy will provide solid grounds for further developments in the vivid areas of low-valent MG chemistry and in particular in their use as catalysts for challenging transformations.
Original text from CORDIS.
Participants
- UNIVERSIDAD DE SEVILLA · SevillaCoordinatorSpain
- THE REGENTS OF THE UNIVERSITY OF CALIFORNIA · OaklandUnited States
Links
Data: CORDIS, © European Union