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.
N1 - Funding Information:
We thank Research Corporation Cottrell Science Award ( 7293 ) and Fort Lewis College for financial support of this project. Pacific Northwest National Laboratory collaborators would like to acknowledge the support of the US Department of Energy Basic Energy Sciences’ Chemical Sciences, Geosciences, and Biosciences Division . Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy.
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
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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U2 - 10.1016/j.ica.2011.07.001
DO - 10.1016/j.ica.2011.07.001
M3 - Article
AN - SCOPUS:84856209767
VL - 380
SP - 14
EP - 21
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
SN - 0020-1693
IS - 1
ER -