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Title: Manganese Mediated Formic Acid Dehydrogenation

Journal Article · · Chemistry - A European Journal

Abstract A robust and rapid manganese formic acid (FA) dehydrogenation catalyst is reported. The manganese is supported by the recently developed, hybrid backbone chelate ligand t Bu PNNOP ( t Bu PNNOP=2,6‐(di‐ tert ‐butylphosphinito)(di‐ tert ‐butylphosphinamine)pyridine) ( 1 ) and the catalyst is readily prepared with MnBrCO 5 to form [( t Bu PNNOP)Mn(CO) 2 ][Br] ( 2 ). Dehydrohalogenation of 2 generated the neutral five coordinate complex ( t Bu PNNOP)Mn(CO) 2 ( 3 ). Dehydrogenation of FA by 2 and 3 was found to be highly efficient, exhibiting turnover frequencies (TOFs) exceeding 8500 h −1 , rivaling many noble metal systems. The parent chelate, t Bu PONOP ( t Bu PONOP=2,6‐bis(di‐ tert ‐butylphosphinito)pyridine) or t Bu PNNNP ( t Bu PNNNP=2,6‐bis (di‐ tert ‐butylphosphinamine)pyridine), coordination complexes of Mn were synthesized, respectively affording [( t Bu PONOP)Mn(CO) 2 ][Br] ( 4 ) and [( t Bu PNNNP)Mn(CO) 2 ][Br] ( 5 ). FA dehydrogenation with the hybrid‐ligand supported 2 exhibits superior catalysis to 4 and 5 .

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
89233218CNA000001; Science Campaign 5
OSTI ID:
1532714
Alternate ID(s):
OSTI ID: 1548850
Report Number(s):
LA-UR-18-31831
Journal Information:
Chemistry - A European Journal, Journal Name: Chemistry - A European Journal; ISSN 0947-6539
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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