[Ni(PMe2NPh2)2](BF4)2 as an Electrocatalyst for H2 Production
A mononuclear nickel(II) bis(diphosphine) complex [Ni(P{sub 2}{sup Me}N{sub 2}{sup Ph}){sub 2}](BF{sub 4}){sub 2} (P{sub 2}{sup Me}N{sub 2}{sup Ph} = 1,5-diphenyl-3,7-dimethyl-1,5-diaza-3,7-diphosphacyclooctane) has been synthesized. This complex is an efficient electrocatalyst for hydrogen production by proton reduction. Using [(DMF)H]OTf as the acid and with added water, a turnover frequency of 6,700 s{sup -1} was obtained. Based on the understanding of previous studies and the measured hydride donor ability of [HNi(P{sub 2}{sup Me}N{sub 2}{sup Ph}){sub 2}](BF{sub 4}) ({Delta}G{sup o}{sub H-} = 54.0 kcal/mol), this complex was anticipated to have the highest turnover frequency for catalytic H{sub 2} production of any complex of this class reported to date.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1039845
- Report Number(s):
- PNNL-SA-85032; KC0307010
- Journal Information:
- ACS Catalysis, Journal Name: ACS Catalysis Journal Issue: 5 Vol. 2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stabilization of Nickel Complexes with Ni0•••H-N Bonding Interactions Using Sterically Demanding Cyclic Diphosphine Ligands
Synthesis and Structure of Vanadium Halide Complexes Containing Diphosphine Ligands with Pendant Amines