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- Title
A Stable Site‐Isolated Mono(phosphine)‐Rhodium Catalyst on a Metal‐Organic Layer for Highly Efficient Hydrogenation Reactions.
- Authors
Guo, Qing‐Yun; Wang, Zitong; Fan, Yingjie; Zheng, Haifeng; Lin, Wenbin
- Abstract
Phosphine‐ligated transition metal complexes play a pivotal role in modern catalysis, but our understanding of the impact of ligand counts on the catalysis performance of the metal center is limited. Here we report the synthesis of a low‐coordinate mono(phosphine)‐Rh catalyst on a metal‐organic layer (MOL), P‐MOL • Rh, and its applications in the hydrogenation of mono‐, di‐, and tri‐substituted alkenes as well as aryl nitriles with turnover numbers (TONs) of up to 390000. Mechanistic investigations and density functional theory calculations revealed the lowering of reaction energy barriers by the low steric hindrance of site‐isolated mono(phosphine)‐Rh sites on the MOL to provide superior catalytic activity over homogeneous Rh catalysts. The MOL also prevents catalyst deactivation to enable recycle and reuse of P‐MOL • Rh in catalytic hydrogenation reactions.
- Subjects
CATALYST poisoning; HETEROGENEOUS catalysis; CATALYTIC hydrogenation; STERIC hindrance; TRANSITION metal complexes; RHODIUM catalysts
- Publication
Angewandte Chemie, 2024, Vol 136, Issue 38, p1
- ISSN
0044-8249
- Publication type
Academic Journal
- DOI
10.1002/ange.202409387