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 Helm

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)14-21
Number of pages8
JournalInorganica Chimica Acta
Volume380
Issue number1
DOIs
Publication statusPublished - Jan 15 2012

Fingerprint

structural analysis
Structural analysis
Ligands
ligands
synthesis
Hydrogen production
Protons
Nuclear magnetic resonance
X ray diffraction
Catalysts
Chemical analysis
hydrogen production
catalysts
nuclear magnetic resonance
protons
Oxidation-Reduction
diffraction
x rays

Keywords

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

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Group 10 complexes containing phosphinomethylamine ligands : Synthesis, structural analysis and electrochemical studies. / Waggoner, Nolan W.; Spreer, Lindsay S.; Boro, Brian J.; DuBois, Daniel L; Helm, Monte.

In: Inorganica Chimica Acta, Vol. 380, No. 1, 15.01.2012, p. 14-21.

Research output: Contribution to journalArticle

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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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