σ-BH activation of NHC → BH3 fragments in dinuclear Cu complexes
We explored herein the coordination properties of the bis(phosphine)NHC → BH3 ligand toward cationic and neutral Cu centres. The synthesis of three dinuclear Cu complexes featuring σ-BH interactions is reported. Noticeably, in each Cu complex, a BH moiety bridges two Cu centres via two σ-BH interact...
| Authors: | , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2025 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/402925 |
| Online Access: | http://hdl.handle.net/10261/402925 https://api.elsevier.com/content/abstract/scopus_id/105003051953 |
| Access Level: | Open access |
| Summary: | We explored herein the coordination properties of the bis(phosphine)NHC → BH3 ligand toward cationic and neutral Cu centres. The synthesis of three dinuclear Cu complexes featuring σ-BH interactions is reported. Noticeably, in each Cu complex, a BH moiety bridges two Cu centres via two σ-BH interactions in a μ2-η1η1 BH coordination mode. NMR, IR, deuterium incorporation and X-ray diffraction analyses, supported by DFT investigation, enabled us to finely measure the level of activation of the B-H bond depending on the coordination environment. The study shows a gradual increase of activation whether the BH fragment is involved in none, one or two σ-BH interactions with Cu centres. |
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