Carboranyl diphosphenes: synthesis, structure and reactivity
Carboranyl-diphosphenes {1-P-2-[C(<sup><i>t</i></sup>Bu) = N(Ar)]-1,2-C<sub>2</sub>B<sub>10</sub>H<sub>10</sub>}<sub>2</sub> [Ar = Dmp (6) or Ph (7); Dmp = 2,6-Me<sub>2</sub>C<sub>6</sub>H<sub>3</sub>, Ph = C<sub>6</sub>H<sub>5</sub>] are prepared in good yields by the reduction of iminocarboranyldichlorophosphines 1-PCl<sub>2</sub>-2-[C(<sup><i>t</i></sup>Bu) = N(Ar)]-1,2-C<sub>2</sub>B<sub>10</sub>H<sub>10</sub> [where Ar = Dmp (4) or Ph (5)] with potassium graphite (KC<sub>8</sub>) in THF. Compounds 6 and 7 have similar dimeric structures in the solid state as confirmed by single-crystal X-ray analyses. Their solution structures are, however, different on the basis of <sup>31</sup>P NMR studies, which could be ascribed to the steric effects of Dmp over Ph. As a result, 6 and 7 exhibit different coordination chemistry toward W(CO)<sub>5</sub>(THF). On the other hand, they show similar properties with oxidizing agents, giving a variety of phosphorus(III) compounds. The results indicate that 6 dissociates into carboranyl phosphinidene in THF.
Authors
- Tek Long Chan (ORCID: https://orcid.org/0000-0002-0391-5746)
- Zuowei Xie (ORCID: https://orcid.org/0000-0001-6206-004X)
- Jie Zhang (ORCID: https://orcid.org/0000-0001-5288-9444)
Institutions
- Chinese University of Hong Kong (HK)
- Southern University of Science and Technology (CN)
- State Key Laboratory of Synthetic Chemistry (CN)
Publication Details
- Journal
- Dalton Transactions
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5dt01239b
- Citations
- 1
- Primary Topic
- Synthesis and characterization of novel inorganic/organometallic compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.54
Funders
- National Natural Science Foundation of China
- Research Grants Council, University Grants Committee
- Shenzhen Science and Technology Innovation Program