Issue 19, 2021
From the journal:

Inorganic Chemistry Frontiers

Stepwise B–H bond activation of a meta-carborane†

Xin-Ran Liu,a   Peng-Fei Cui,a   Shu-Ting Guo,a   Run-Ze Yuana  and  Guo-Xin Jin ORCID logo *ab  

* Corresponding authors

a Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200438, P. R. China

b State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
E-mail: gxjin@fudan.edu.cn

Abstract

Stepwise multiple B–H bond activation is a major challenge in synthetic chemistry. Herein, we have developed a controlled stepwise method to monitor the process of B–H bond activation based on a meta-carborane. In this process, the metallacyclic 3 [Pd2(C10N2H8)2(SCNPh)4(m-C2B10H10)2] can be achieved through non-covalent bond interactions between the carboranylthioamide ligand and transition metal fragment. Importantly, it slowly converts to product 4 [Pd(C10N2H8)(SCNPh)(SCNHPh)(m-C2B10H9)] via mono B–H bond activation, and then a second B–H activation leads to 5 [Pd2(C10N2H8)2(SCNPh)2(m-C2B10H8)]. The obtained organometallic palladium pincer complex shows acid–base responsive behaviour, namely reversible structural transformation between the mononuclear pincer complex and a trimetallic Pd/S metallacycle. This work provides a potential strategy for exploring the mechanisms of B–H bond activation.

Graphical abstract: Stepwise B–H bond activation of a meta-carborane

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Article information

DOI
https://doi.org/10.1039/D1QI00732G
Article type
Research Article
Submitted
10 Jun 2021
Accepted
09 Aug 2021
First published
10 Aug 2021

Inorg. Chem. Front., 2021,8, 4349-4355

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Stepwise B–H bond activation of a meta-carborane

X. Liu, P. Cui, S. Guo, R. Yuan and G. Jin, Inorg. Chem. Front., 2021, 8, 4349 DOI: 10.1039/D1QI00732G

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