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 › peer-review

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

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

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@article{64b34b98995b470f8ad5bfc52f700644,

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

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.",

keywords = "Hydrogen production, Palladium(II) complexes, Pendant amine, Phosphinomethylamine ligands, Platinum(II) complexes, Triphos ligand",

author = "Waggoner, {Nolan W.} and Spreer, {Lindsay S.} and Boro, {Brian J.} and Dubois, {Daniel L.} and Helm, {Monte L.}",

year = "2012",

month = jan,

day = "15",

doi = "10.1016/j.ica.2011.07.001",

language = "English",

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journal = "Inorganica Chimica Acta",

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TY - JOUR

T1 - Group 10 complexes containing phosphinomethylamine ligands

T2 - Synthesis, structural analysis and electrochemical studies

AU - Waggoner, Nolan W.

AU - Spreer, Lindsay S.

AU - Boro, Brian J.

AU - Dubois, Daniel L.

AU - Helm, Monte L.

PY - 2012/1/15

Y1 - 2012/1/15

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.

KW - Hydrogen production

KW - Palladium(II) complexes

KW - Pendant amine

KW - Phosphinomethylamine ligands

KW - Platinum(II) complexes

KW - Triphos ligand

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