Group 10 complexes containing phosphinomethylamine ligands: Synthesis, structural analysis and electrochemical studies

Nolan W. Waggoner; Lindsay S. Spreer; Brian J. Boro; Daniel L. Dubois; Monte L. Helm

doi:10.1016/j.ica.2011.07.001

Group 10 complexes containing phosphinomethylamine ligands: Synthesis, structural analysis and electrochemical studies

Nolan W. Waggoner, Lindsay S. Spreer, Brian J. Boro, Daniel L. Dubois, Monte L. Helm

Pacific Northwest National Laboratory

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

The reaction of [M(triphos)OTf](OTf) (M = Pd, Pt; triphos = (Ph ₂PCH ₂CH ₂) ₂PPh; OTf = triflate) with one equivalent of a diphenylphosphinomethylamine ligand (P ^Ph2N ^Ph(R), R = Ph or Me) leads to the formation of the M(II) complexes [Pd(triphos)P ^Ph2N ^Ph(R)](OTf) ₂ (1a, R = Ph; 1b, R = Me) and [Pt(triphos)P ^Ph2N ^Ph(R)](OTf) ₂ (2a, R = Ph; 2b, R = Me). Complexes 1a, 1b, 2a and 2b were obtained in moderate yields and characterized by elemental analysis, ¹H, ¹³C, ³¹P NMR and X-ray diffraction. The redox behavior of these complexes shows a reversible reduction wave with half-wave potentials ranging from-1.04 to-1.23 V. Electrocatalytic proton reduction studies demonstrate these complexes function as hydrogen production catalysts with turn over frequencies ranging from 120 to 200 s ^-1.

Original language	English
Pages (from-to)	14-21
Number of pages	8
Journal	Inorganica Chimica Acta
Volume	380
Issue number	1
DOIs	https://doi.org/10.1016/j.ica.2011.07.001
Publication status	Published - Jan 15 2012

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Keywords

Hydrogen production
Palladium(II) complexes
Pendant amine
Phosphinomethylamine ligands
Platinum(II) complexes
Triphos ligand

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Cite this

Waggoner, N. W., Spreer, L. S., Boro, B. J., Dubois, D. L., & Helm, M. L. (2012). Group 10 complexes containing phosphinomethylamine ligands: Synthesis, structural analysis and electrochemical studies. Inorganica Chimica Acta, 380(1), 14-21. https://doi.org/10.1016/j.ica.2011.07.001

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abstract = "The reaction of [M(triphos)OTf](OTf) (M = Pd, Pt; triphos = (Ph 2PCH 2CH 2) 2PPh; OTf = triflate) with one equivalent of a diphenylphosphinomethylamine ligand (P Ph2N Ph(R), R = Ph or Me) leads to the formation of the M(II) complexes [Pd(triphos)P Ph2N Ph(R)](OTf) 2 (1a, R = Ph; 1b, R = Me) and [Pt(triphos)P Ph2N Ph(R)](OTf) 2 (2a, R = Ph; 2b, R = Me). Complexes 1a, 1b, 2a and 2b were obtained in moderate yields and characterized by elemental analysis, 1H, 13C, 31P NMR and X-ray diffraction. The redox behavior of these complexes shows a reversible reduction wave with half-wave potentials ranging from-1.04 to-1.23 V. Electrocatalytic proton reduction studies demonstrate these complexes function as hydrogen production catalysts with turn over frequencies ranging from 120 to 200 s -1.",

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N2 - The reaction of [M(triphos)OTf](OTf) (M = Pd, Pt; triphos = (Ph 2PCH 2CH 2) 2PPh; OTf = triflate) with one equivalent of a diphenylphosphinomethylamine ligand (P Ph2N Ph(R), R = Ph or Me) leads to the formation of the M(II) complexes [Pd(triphos)P Ph2N Ph(R)](OTf) 2 (1a, R = Ph; 1b, R = Me) and [Pt(triphos)P Ph2N Ph(R)](OTf) 2 (2a, R = Ph; 2b, R = Me). Complexes 1a, 1b, 2a and 2b were obtained in moderate yields and characterized by elemental analysis, 1H, 13C, 31P NMR and X-ray diffraction. The redox behavior of these complexes shows a reversible reduction wave with half-wave potentials ranging from-1.04 to-1.23 V. Electrocatalytic proton reduction studies demonstrate these complexes function as hydrogen production catalysts with turn over frequencies ranging from 120 to 200 s -1.

AB - The reaction of [M(triphos)OTf](OTf) (M = Pd, Pt; triphos = (Ph 2PCH 2CH 2) 2PPh; OTf = triflate) with one equivalent of a diphenylphosphinomethylamine ligand (P Ph2N Ph(R), R = Ph or Me) leads to the formation of the M(II) complexes [Pd(triphos)P Ph2N Ph(R)](OTf) 2 (1a, R = Ph; 1b, R = Me) and [Pt(triphos)P Ph2N Ph(R)](OTf) 2 (2a, R = Ph; 2b, R = Me). Complexes 1a, 1b, 2a and 2b were obtained in moderate yields and characterized by elemental analysis, 1H, 13C, 31P NMR and X-ray diffraction. The redox behavior of these complexes shows a reversible reduction wave with half-wave potentials ranging from-1.04 to-1.23 V. Electrocatalytic proton reduction studies demonstrate these complexes function as hydrogen production catalysts with turn over frequencies ranging from 120 to 200 s -1.

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KW - Phosphinomethylamine ligands

KW - Platinum(II) complexes

KW - Triphos ligand

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10.1016/j.ica.2011.07.001